ASP.NET Debugging

Azure: There is not enough space on the disk

2009-12-04T16:55:14Z

Problem

There may be some times where you will see this message when developing an application for Windows Azure. The message will look like:

There is not enough space on the disk.
Description: An unhandled exception occurred during the execution 
of the current web request. Please review the stack trace for more 
information about the error and where it originated in the code. 

Exception Details: System.IO.IOException: There is not enough 
space on the disk.


Source Error: 
An unhandled exception was generated during the execution of the 
current web request. Information regarding the origin and location 
of the exception can be identified using the exception stack trace 
below. 

Stack Trace: 
  
[IOException: There is not enough space on the disk.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +10546789
   System.IO.FileStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count) +10351324
   System.Web.TempFile.AddBytes(Byte[] data, Int32 offset, Int32 length) +26
   System.Web.HttpRawUploadedContent.AddBytes(Byte[] data, Int32 offset, Int32 length) +327
   System.Web.HttpRequest.GetEntireRawContent() +515
   System.Web.HttpRequest.GetMultipartContent() +72
   System.Web.HttpRequest.FillInFormCollection() +248
   System.Web.HttpRequest.get_Form() +79
   System.Web.HttpRequest.get_HasForm() +73
   System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +54
   System.Web.UI.Page.DeterminePostBackMode() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +268

The typical situation where you will see this is if you are using the ASP.NET FileUpload control to let users upload files.

If the file they try to upload exceeds 100 MB, it will error with this message.

Resolution

There are a few ways that you can work around this issue. The best solution would be to use Silverlight to handle the upload instead of the ASP.NET FileUpload control. By using Silverlight, you can have the client directly upload the file to blob storage and reduce how many places the file gets copied.

There are also some 3rd party controls that you can use to do this as well.

More Information

The problem with the ASP.NET FileUpload control is that it writes the file to a temp folder during upload. The folder that is used in Windows Azure is limited to 100 MB so if you try to write something larger then that, it will fail.

I haven’t tested this, but if you have multiple users uploading data at the same time, you could see the same problem. For example, if 15 users all upload a 10 MB file at the same time, the temp folder will probably fill up and give the same error.

Note: there is a setting that you may be temped to use which is the tempDirectory attribute off the compilation element. If you try to set this to anything, it will cause your Web Role to not start up.

Updates to Windows Azure from PDC

2009-11-30T19:06:15Z

Wow there have been a lot of updates to the Windows Azure Platform that were announced at the PDC. I would love to hear from folks to let me know what they are most excited about. I was most impressed with the announcement of Dallas. I think that has the potential to change the way that we get information and consume it. It is great that companies like NASA can expose lots of information to people in a structured manner and allow the consumer to decide what they want to do with it.

I have been looking into the methods to debug applications in Windows Azure and hope to be able to talk about that very soon on this blog. So stay tuned for that and please let me know if you have any ideas of the types of data/information you would like to see.

Contest: What have you done with .NET?

2009-11-05T17:48:58Z

Do you develop applications using .NET? If so, head on over to this new contest at http://www.mydotnetstory.com and entry your story for a chance to win some really great prizes. What can you win? Well, if you are chosen by the judges, you could win a trip the the Galapagos Islands or a Smart Car or just cash! If you are one of the top 3 vote getters on the site, you will win an Internet Media Tablet. For more information on the prizes, check out the Contest site.

If you want to read about some of the powerful and “unexpected” .NET stories by REAL developers, please check out the campaign site.

Also, if you are planning on attending the PDC, check out the PDC Party at 8:00 pm in the VS / .NET Lounge Theater. You have a chance to win a Zune HD 32 GB by answering questions correctly there.

I hope to see a lot of really great applications discussed on there.

Good luck!

Impersonation, WCF, and making updates to a database

2009-09-17T22:14:59Z

I was troubleshooting a problem with WCF where the updates to a remote database were failing. The reason for the failure was found pretty quickly to be delegation.

For general impersonation questions in regards to WCF, there is lots of great information found here.

For my situation, the problem was that the ASP.NET application that was calling the WCF service was impersonating and I couldn’t enable delegation in my environment. So the connection to SQL failed. There are a number of ways to solve this problem, but some have more problems then others.

Fix #1

The easiest way is the add a User ID and Password to the web.config file. But then you have to worry about updating that if the password expires and also the security of having the password in the config file.

Note: You can add the password to the registry following KB329290

Fix #2

Another option would be to impersonate a given user on the network that has permission and use that when you are making the calls to the database. You can follow the “Impersonate a Specific User in Code” section of KB306158 for that. This also has the problem of passwords expiring and that the password is stored in code, but it isn’t in a config file anymore.

Fix #3

The one I ended up using was this one. In my case, the IIS Worker Process was already running under a network account that could assess the database. So I just needed a way to get rid of the impersonation that the process was running under, do the database work, and then impersonate again. The key was to do the following:

     WindowsImpersonationContext wic = null;

    try

    {

        wic = WindowsIdentity.Impersonate(IntPtr.Zero); // revert to self

        // Do database work here

    }

    finally

    {

        if (wic != null)

            wic.Undo(); // resume impersonating

    }

This will revert to self, let the database code run and then continue impersonating after that is done.

With this code, I don’t have to store any passwords in my code or config files. And everything will work correctly. The only drawback is that all database work is going through a single account and so on the database side, you can’t do auditing by users to see what they are doing. But in my application, I am already logging information into the database so there would be no need to have that kind of information.

Debugging .NET apps for .NET 4.0

2009-09-02T19:45:35Z

With Visual Studio 2010 and .NET 4.0 getting ready to be shipped sometime in the next year, I wanted to see what were peoples ideas for how to debug applications that were written with them. Are you happy in production with what you are currently doing? Do you use SOS.dll to troubleshoot problems?

SOS

The main place I am really interested in is production debugging. Is SOS a sufficient tool to get the data that you need? If you had another version of SOS for .NET 4.0, would you be happy with the features it has or would you want something more?

Debugger

I understand that using a typical debugger can be very difficult for people. If you don’t know what you are looking at, it can be very difficult to understand what is a problem and what is normal. It is also very difficult to see typical problems. For example, if you know your program is crashing due to running out of memory, what do you do to see what is taking up memory? How do you tell if it is fragmentation? What types of fragmentation are there that you would need to look for?

I wanted to see what the interest is in a different way of looking at the data, something more along the lines of DebugDiag.

Opinions

I’d love to hear your thoughts. Let me know!

Discounts on Microsoft Certification Exams

2009-09-01T21:41:34Z

In case anyone is interested in taking some Microsoft Exams, we have some discounts on them. Here is the announcement talking about the discounts:

Get up to 25 percent off select Microsoft Certification exams

In this tough economy, are you looking to get ahead? Do you want to stand out? Microsoft Certification can help you pursue a new career in IT, move from one job role to another, or become indispensible in your existing role. Microsoft Certifications are continually evaluated and updated to ensure their relevance in the marketplace. As a result, earning a certification not only helps you stay current on the latest developments in Microsoft technologies and platforms; it also enables you to demonstrate to employers your job skills.

To make it easier for you to get started, you can now take advantage of a new set of discounts that Microsoft is providing on select Microsoft Certification exams. Visit the website below to find out how to begin and to see whether the exam you’re interested in is 15%, 20% or 25% off. This offer is available worldwide while supplies last, and you have to register, schedule and purchase your discounted exam by December 31, 2009.

http://www.microsoft.com/learning/careeroffers

WCF, Silverlight, and SharePoint… Oh my!

2009-08-31T22:33:42Z

I was recently working on a project and needed to have Silverlight make a WCF call. That is pretty straight forward until you place the Silverlight code inside SharePoint and want it to call a WCF that is also inside SharePoint.

The first problem that I had to solve was getting Silverlight to be able to call the WCF correctly. Since in Visual Studio when you make the connection, it will have the local server for the path. Like http://localhost:95559/MyService.svc and for SharePoint I wanted it to point to the local server’s name and in the _layouts directory. Luckily I came across the following blog that helped with getting that to work: Silverlight ServiceReferences.ClientConfig Alternatives

The only change I had to make was to the BasicHttpBinding:

        1: BasicHttpBinding binding = new BasicHttpBinding(

       2:             Application.Current.Host.Source.Scheme.Equals("https", StringComparison.InvariantCultureIgnoreCase) 

       3:             ? BasicHttpSecurityMode.Transport : BasicHttpSecurityMode.TransportCredentialOnly);

Then I had to figure out how to get WCF hosted in SharePoint correctly. For that, I turned to this post: Hosting a WCF service in Windows Sharepoint Services v3.0

So I now had a httpModule that would handle the *.svc requests that start with a ~. That is important to make sure because you will get called again without the ~ so make sure you check for that before removing the first character. I also had Silverlight setup where it could call the SharePoint machine regardless of what Visual Studio wanted to do. I followed the “Dynamic Configuration” setup.

When I had this setup, I then got problems still. The only way I could see the problem was running something like Network Monitor or Web Development Helper. In there I saw a 500 error being returned from the server. I attached a debugger and saw that it was giving me this message:

Security settings for this service require ‘Anonymous’ Authentication but it is not enabled for the IIS application that hosts this service.

From this error, I realized that WCF uses anonymous by default. So I went into my web.config file and changed the binding to support Windows:

       1: <bindings>

       2:     <basicHttpBinding>

       3:         <binding name="MyBinding">

       4:             <security mode="TransportCredentialOnly">

       5:                 <transport clientCredentialType="Windows"/>

       6:             </security>

       7:         </binding>

       8:     </basicHttpBinding>

       9: </bindings>

Then you just add a bindingConfiguration=”MyBinding” on your service endpoint.

After I made that change, I ran it again and this time I got the following error:

Security settings for this service require Windows Authentication but it is not enabled for the IIS application that hosts this service.

So I changed my binding to:

       1: <bindings>

       2:     <basicHttpBinding>

       3:         <binding name="basicHttpBinding">

       4:             <security mode="TransportCredentialOnly">

       5:                 <transport clientCredentialType="Ntlm"/>

       6:             </security>

       7:         </binding>

       8:     </basicHttpBinding>

       9: </bindings>

Note: If you have a ”mex” endpoint you may get another error about ‘anonymous’ because that uses anonymous by default. If you do, you can delete the mex endpoint unless you need discoverability. Then you will need to remove anonymous from that as well.

After making these changes, Silverlight was able to call back into the ASP.NET project that it was loaded from and call a WCF service that was running inside SharePoint.

Developing for the Clouds

2009-06-18T18:33:28Z

I wanted to start a conversation with everyone on the thoughts around Cloud Computing. I have been using Azure for a while now and I have found some interesting things out about it.

Before I start talking about those things though, I wanted to see who was planning on using this technology or who is already using it. This would include other Cloud solutions as well.

If you are, what are you planning to do in the Cloud? How are you going about setting up testing, development, maintaining, monitoring in the Cloud?

I think that Cloud Computing is the future in a lot of ways and feel like things are going to change in a fundamental way in the not to distant future because of Cloud Computing. Do you agree?

Please keep in mind that I am not saying that Cloud Computing is a whole new way methodology, but I do think it will enable scenarios that weren’t possible before and will allow us to push the envelope of what we are capable of doing with a computer.

I look forward to hearing back from you and talking more about Azure and Cloud Computing.

Adventures with Silverlight 3.0 and SharePoint – Part 2

2009-06-15T20:02:14Z

Just a quick update on this. I had to make a few changes to my site and I now have it working!

To fix the master page problem, I needed to load it from code behind. Once I did that, I was able to have that show up. But then I had a problem of the Silverlight application didn’t show up at all.

To get around that I needed to get rid of the width and height settings from the Silverlight object. So I needed to change from using width=100% height=100% to style=”width: 700px; height: 700px”

After making that change, the only thing left was to move my connection string settings into the web.config file for SharePoint. After that was done, my Silverlight Navigation project loaded just fine in SharePoint and was able to use RIA Data Services.

I hope these two posts help anyone else looking to do this. Let me know if you run into any other problems or have any suggestions.

Adventures with Silverlight 3.0 and SharePoint – Part 1

2009-06-02T19:33:41Z

I have been working on getting Silverlight 3.0 to work with SharePoint 2007 and I wanted to share with you the progress I have made and some of the challenges I have remaining.

Project

This project uses Silverlight 3.0, the Silverlight Toolkit for 3.0, and RIA Data Services. So it is basically using as much as it can that is new. This means we have a Entity Model and a ASP.NET web application that the Silverlight application will use. It also uses authentication using the new Domain Service for authentication.

What I did

So the first thing I did was to follow the steps in this blog post about Silverlight 2. I just changed it to be the System.Web.Silverlight from 3.0. The suggestion for upgrading the web.config for Silverlight worked great for bringing most of the stuff I needed.

I then did the following steps:

Copied my project under the _layouts folder
Copied the bin folder for my project to the VirtualDirectories\80\bin folder of SharePoint
Ran gacutil on system.web.silverlight
Ran gacutil on system.web.ria
Ran gacutil on system.web.domainservices.webcontrols

I then made some changes to the web.config of my project, namely removing everything that was already in the web.config for SharePoint. The last change I did was to make the bin folder have FullTrust. I did this by adding the following to the wss_minimaltrust.config file:

        1: <CodeGroup class="UnionCodeGroup" version="1"

       2:     PermissionSetName="FullTrust">

       3:     <IMembershipCondition

       4:         class="UrlMembershipCondition"

       5:         version="1" Url="$AppDirUrl$/bin/*"

       6:     />

       7: </CodeGroup>

After making these changes, the next problem I ran into was around RIA. It makes calls using a DataService.axd. So that needed to be added to the web.config file. In <system.web>:

       1: <httpHandlers>

       2:     ...

       3:     <add path="DataService.axd" verb="GET,POST" type="System.Web.Ria.DataServiceFactory, System.Web.Ria, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"

       4:       validate="false" />

       5: </httpHandlers>

And <system.Webservers>:

       1: <handlers>

       2:     ...

       3:     <add name="DataService" verb="GET,POST" path="DataService.axd"

       4:             type="System.Web.Ria.DataServiceFactory, System.Web.Ria, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

       5: </handlers>

That information is talked about in the Silverlight forum for getting it to work with Azure here.

I then tried to get my application to load the SharePoint master page but I ran into a problem where it tells me:

       1: The referenced file '<path to master>' is not allowed on this page.

I am currently investigating that error and will post more as I progress. If anyone else is trying to get this to work with SharePoint or has any suggestions, I’d love to hear them.

CannonPI teaser video

2009-05-07T20:58:01Z

There is a new video up on youtube that is the beginning of many more videos. You should check it out and look for for more coming soon.

Also, see if you recognize any of the people in this, feel free to post here who you think they are.

Silverlight RIA calling Stored Procedures that don’t return tables

2009-05-07T17:07:07Z

There are times where you want to use a stored procedure that doesn’t return just normal rows out of a database. One classic example is if you are doing Full-Text Searching and want to return the Rank.

The first step to doing this is the get your stored procedures exposed in the ADO.NET Entity Data Model. Instead of going through the steps for doing that here, I’ll just point you to a great post by Julie Lerman on her blog: Implement SELECT Stored Procedures that return miscellaneous data in CTP2 of EF Designer.

After following those steps, you will have the stored procedures all ready to be called from the Entity Data Model. You can then use these stored procedures from ASP.NET, ASP.NET MVC, or anything else that can consume the Entity Data Model.

One side note, if you use the “Update Model from Database…” feature on your Entity Model, it will destroy the store layer tables that you created from Julie’s post. If that happens, just recreate them again.

Now to get this to work from Silverlight using RIA, there is another step that needs to be done. You need to get these stored procedures exposed in your Domain Service. One way to handle doing that is to create functions in the Domain Service like the following for each of them. Assume you have a stored procedure called SearchData and it takes a string as input to seach for in the database. You can create a function in the Domain Service like:

        1: public IQueryable<SearchDataTable> GetSearchData(String SearchString)

       2: {

       3:     return Context.SearchData(SearchString).AsQueryable();

       4: }

When you compile this, it will create a client side function called LoadSearchData that takes a string as input. Then you can call this just like you load any other data in Silverlight RIA:

       1: public void Searching(String search)

       2: {

       3:     if (String.IsNullOrEmpty(search))

       4:     {

       5:         return;

       6:     }

       7:  

       8:     context.LoadSearchData(search);

       9:     context.Loaded += new EventHandler<System.Windows.Ria.Data.LoadedDataEventArgs>(context_Loaded);

      10: }

      11:  

      12: void context_Loaded(object sender, System.Windows.Ria.Data.LoadedDataEventArgs e)

      13: {

      14:     var context = sender as MyDomainContext;

      15:     foreach (SearchDataTable searchData in context.SearchDataTable)

      16:     {

      17:         ... do stuff with the data ...

      18:     }

      19: }

Notice that I am hooking up to when the context is finished being loaded so that I know the data has been populated.

How are production ASP.NET site problems applied in the future?

2009-04-27T20:38:32Z

There are a lot of different things you can use to monitor a production ASP.NET web site for problems. Some of the most common are logging, perfmon counters and the like. There is also the method of getting feedback from people using the site when they relay that there is a problem.

The question I would like to talk about is how do you use this information for future projects.

Best Practices

I think the most obvious way is the create a type of best practices document from the learning that you have had in the past. For example, using StringBuilder if you are going to be dynamically building up strings.

Code Re-use

Another useful method is sharing code that is already in production so that other future projects can use it. This not only has the added benefit of less development time, you know this code has been running in production and will work correctly and not cause issues.

Analysis

Sometimes you can notice things in production that you are unable to fix. For example something that would take an entire redesign of the web site to fix. But these types of things can be passed on to the next project where some of the design decisions haven’t been made yet. One such decision could be how many servers should handle each layer of your site. And how many database servers you should have.

Other ideas?

What other things do you do with your learnings from previous web sites? Do you look at places where you over-analyzed a problem and spent too much time solving something that didn’t need such a complicated solution? I’d love to hear what else people do. Does the technology play a role in future sites? Like would you consider changing to Silverlight or MVC because of something that happened on a previous site?

Creating interesting Silverlight chart datapoints

2009-04-24T17:55:02Z

I was reading this great post by Jeff Wilcox and quickly found out that some of the needed code to get this to work was missing from his post.

So I went about recreating the missing parts and getting this to work. Here is what mind looks like now that it is functional:

To get to this work, I followed the same steps that Jeff mentioned so I will not go through them here. But what I will do is give you the source code that I used.

Test.xaml

        1: <navigation:Page x:Class="TestProject.Views.Test" 

       2:            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 

       3:            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 

       4:            xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"

       5:            xmlns:datavis="clr-namespace:System.Windows.Controls.DataVisualization;assembly=System.Windows.Controls.DataVisualization.Toolkit"

       6:            xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"

       7:            Title="Test Page">

       8:     <navigation:Page.Resources>

       9:         <ControlTemplate x:Key="CustomLineDataPointTemplate" TargetType="chartingToolkit:LineDataPoint">

            <Grid x:Name="Root" Opacity="0" ToolTipService.ToolTip="{Binding DataPointTooltipText}">

                <VisualStateManager.VisualStateGroups>

                    <VisualStateGroup x:Name="CommonStates">

                        <VisualStateGroup.Transitions>

                            <VisualTransition GeneratedDuration="0:0:0.1"/>

                        </VisualStateGroup.Transitions>

                        <VisualState x:Name="Normal"/>

                        <VisualState x:Name="MouseOver">

                            <Storyboard>

                                <ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="MouseOverHighlight" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">

                                    <SplineColorKeyFrame KeyTime="00:00:00" Value="#FFFFDF00"/>

                                </ColorAnimationUsingKeyFrames>

                                <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="MouseOverHighlight" Storyboard.TargetProperty="(UIElement.Opacity)">

                                    <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0.24"/>

                                </DoubleAnimationUsingKeyFrames>

                            </Storyboard>

                        </VisualState>

                    </VisualStateGroup>

                    <VisualStateGroup x:Name="SelectionStates">

                        <VisualStateGroup.Transitions>

                            <VisualTransition GeneratedDuration="0:0:0.1"/>

                        </VisualStateGroup.Transitions>

                        <VisualState x:Name="Unselected"/>

                        <VisualState x:Name="Selected">

                            <Storyboard>

                                <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="SelectionHighlight" Storyboard.TargetProperty="(UIElement.Opacity)">

                                    <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0.18"/>

                                </DoubleAnimationUsingKeyFrames>

                            </Storyboard>

                        </VisualState>

                    </VisualStateGroup>

                    <VisualStateGroup x:Name="RevealStates">

                        <VisualStateGroup.Transitions>

                            <VisualTransition GeneratedDuration="0:0:0.5"/>

                        </VisualStateGroup.Transitions>

                        <VisualState x:Name="Shown">

                            <Storyboard>

                                <DoubleAnimation Duration="0" Storyboard.TargetName="Root" Storyboard.TargetProperty="Opacity" To="1"/>

                            </Storyboard>

                        </VisualState>

                        <VisualState x:Name="Hidden">

                            <Storyboard>

                                <DoubleAnimation Duration="0" Storyboard.TargetName="Root" Storyboard.TargetProperty="Opacity" To="0"/>

                            </Storyboard>

                        </VisualState>

                    </VisualStateGroup>

                </VisualStateManager.VisualStateGroups>

                <Ellipse Stroke="{TemplateBinding BorderBrush}" Fill="{TemplateBinding Background}"/>

                <Ellipse RenderTransformOrigin="0.661,0.321">

                    <Ellipse.Fill>

                        <RadialGradientBrush GradientOrigin="0.681,0.308">

                            <GradientStop Color="#00FFFFFF"/>

                            <GradientStop Color="#FF3D3A3A" Offset="1"/>

                        </RadialGradientBrush>

                    </Ellipse.Fill>

                </Ellipse>

                <Ellipse x:Name="SelectionHighlight" Opacity="0" Fill="Red"/>

                <Ellipse x:Name="MouseOverHighlight" Opacity="0" Fill="White"/>

            </Grid>

        </ControlTemplate>

  

        <datavis:StylePalette x:Key="MyCustomStylePalette">

            <!--Blue-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFB9D6F7"/>

                            <GradientStop Color="#FF284B70" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Red-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFFBB7B5"/>

                            <GradientStop Color="#FF702828" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Light Green -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFB8C0AC"/>

                            <GradientStop Color="#FF5F7143" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Yellow -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFFDE79C"/>

                            <GradientStop Color="#FFF6BC0C" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Indigo -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFA9A3BD"/>

                            <GradientStop Color="#FF382C6C" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Magenta -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFB1A1B1"/>

                            <GradientStop Color="#FF50224F" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Dark Green -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FF9DC2B3"/>

                            <GradientStop Color="#FF1D7554" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Gray Shade-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFB5B5B5"/>

                            <GradientStop Color="#FF4C4C4C" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Blue-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FF98C1DC"/>

                            <GradientStop Color="#FF0271AE" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Brown -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFC1C0AE"/>

                            <GradientStop Color="#FF706E41" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Cyan-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFADBDC0"/>

                            <GradientStop Color="#FF446A73" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!-- Special Blue -->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FF2F8CE2"/>

                            <GradientStop Color="#FF0C3E69" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Gray Shade 2-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFDCDCDC"/>

                            <GradientStop Color="#FF757575" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Gray Shade 3-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFF4F4F4"/>

                            <GradientStop Color="#FFB7B7B7" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

            <!--Gray Shade 4-->

            <Style TargetType="Control">

                <Setter Property="Background">

                    <Setter.Value>

                        <RadialGradientBrush>

                            <RadialGradientBrush.RelativeTransform>

                                <TransformGroup>

                                    <ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="2.09" ScaleY="1.819"/>

                                    <TranslateTransform X="-0.425" Y="-0.486"/>

                                </TransformGroup>

                            </RadialGradientBrush.RelativeTransform>

                            <GradientStop Color="#FFF4F4F4"/>

                            <GradientStop Color="#FFA3A3A3" Offset="1"/>

                        </RadialGradientBrush>

                    </Setter.Value>

                </Setter>

                <Setter Property="Template" Value="{StaticResource CustomLineDataPointTemplate}" />

            </Style>

        </datavis:StylePalette>

    </navigation:Page.Resources>

    <Grid x:Name="LayoutRoot" Background="White">

        <chartingToolkit:Chart x:Name="Chart1" Title="Overall History"

                                               Width="500" Height="500" StylePalette="{StaticResource MyCustomStylePalette}">

            <chartingToolkit:Chart.Series>

                <chartingToolkit:LineSeries

                            Title="First Line"

                            IndependentValueBinding="{Binding EntryDate}"

                            DependentValueBinding="{Binding Count}" />

                <chartingToolkit:LineSeries

                            Title="Second Line"

                            IndependentValueBinding="{Binding EntryDate}"

                            DependentValueBinding="{Binding Count}" />

                <chartingToolkit:LineSeries

                            Title="Third Line"

                            IndependentValueBinding="{Binding EntryDate}"

                            DependentValueBinding="{Binding Count}" />

            </chartingToolkit:Chart.Series>

        </chartingToolkit:Chart>

    </Grid>

</navigation:Page>

Text.xaml.cs

       1: using System;

       2: using System.Collections.Generic;

       3: using System.Linq;

       4: using System.Net;

       5: using System.Windows;

       6: using System.Windows.Controls;

       7: using System.Windows.Documents;

       8: using System.Windows.Input;

       9: using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Windows.Navigation;

using System.Windows.Controls.DataVisualization.Charting;

  

namespace TestProject.Views

{

    public class MyData

    {

        public MyData(int count, DateTime entryDate, string dataTitle, int growth)

        {

            Count = count;

            EntryDate = entryDate;

            DataTitle = dataTitle;

            Growth = growth;

        }

  

        public int Count { get; set; }

        public DateTime EntryDate { get; set; }

  

        public string DataTitle { get; set; }

        public int Growth { get; set; }

  

        public object DataPointTooltipText

        {

            get

            {

                TextBlock tb = new TextBlock();

                tb.Inlines.Add(new Run { Text = "Title: " + DataTitle, FontWeight = FontWeights.Bold });

                tb.Inlines.Add(new LineBreak());

                tb.Inlines.Add(new Run { Text = "Updated: " + EntryDate.ToShortDateString() });

                tb.Inlines.Add(new LineBreak());

                if (Growth >= 0)

                    tb.Inlines.Add(new Run { Text = "Growth: " + Growth.ToString(), Foreground = new SolidColorBrush(Colors.Green) });

                else

                    tb.Inlines.Add(new Run { Text = "Neg Growth: " + Growth.ToString(), Foreground = new SolidColorBrush(Colors.Red) });

  

                return tb;

            }

        }

    }

  

    public partial class Test : Page

    {

        public Test()

        {

            InitializeComponent();

        }

  

        // Executes when the user navigates to this page.

        protected override void OnNavigatedTo(NavigationEventArgs e)

        {

            LoadData();

        }

  

        public void LoadData()

        {

            List<MyData> line1 = new List<MyData>();

            List<MyData> line2 = new List<MyData>();

            List<MyData> line3 = new List<MyData>();

  

            line1.Add(new MyData(4, new DateTime(2008, 11, 10), "Test 1", 4));

            line1.Add(new MyData(9, new DateTime(2008, 11, 12), "Test 2", 5));

            line1.Add(new MyData(20, new DateTime(2009, 2, 13), "Test 3", 11));

  

            line2.Add(new MyData(1, new DateTime(2008, 12, 14), "Test A", 1));

            line2.Add(new MyData(15, new DateTime(2008, 12, 20), "Test B", 14));

            line2.Add(new MyData(10, new DateTime(2009, 1, 12), "Test C", -5));

  

            line3.Add(new MyData(7, new DateTime(2008, 12, 1), "Test 1.1", 7));

            line3.Add(new MyData(13, new DateTime(2009, 1, 12), "Test 1.2", 6));

            line3.Add(new MyData(16, new DateTime(2009, 2, 10), "Test 1.3", 3));

  

            LineSeries ls = Chart1.Series[0] as LineSeries;

            ls.ItemsSource = line1;

  

            LineSeries ls2 = Chart1.Series[1] as LineSeries;

            ls2.ItemsSource = line2;

  

            LineSeries ls3 = Chart1.Series[2] as LineSeries;

            ls3.ItemsSource = line3;

        }

    }

}

Let me know if you have any questions. And please note that this is using Silverlight 3.0 and the latest toolkit.

Logging modules for ASP.NET (MVC) and also for Windows Azure

2009-04-24T17:07:20Z

I was just reading through Scott Hanselman’s post about ELMAH and this sounds like a great idea. Getting a easy to consume report of all of your exceptions is a wonderful thing, especially when you add in that you can get it as an RSS feed, an email or a web site. You can check out ELMAH or read through his post to get a lot of details on it.

The web site looks like this:

This also got me thinking about Windows Azure and some of the logging that has been done already for that. So I wanted to highlight one of the projects here and talk about what it does. It is called Azure Application Monitor.

This allows you to see how much time and memory your instance is using. After you integrate this into your application, you will get a report like:

It is easy to add this to your application.

Download the application
Add the following line to your code. If you are adding it to a WebRole, add it in the Page_PreRender() function. Or in the Start() of a WorkerRole, changing it to WorkerRole below:
```
Neudesic.Azure.AzureMonitor.Start("AppName", "WebRole");
```
Be sure you have the TableStorageEndpoint configuration setting configured.
Create a PerfCounterUpdateInterval configuration setting and set the value (the value is in ticks (1000 ticks = 1 second)
Test and deploy your application

To view the data, you need to configure the AzureMonitor so that it points to your TableStorageEndpoint

As for what all it tracks, here is the list:

Application Name (you supply this in your code)

Role Name (you supply this in your code)

Machine Name

Process ID

Thread count

Handle count

Total processor time

User processor time

Private memory size

Non-paged memory size

Paged memory size

Paged system memory size

Peak paged memory size

Peak virtual memory size

Peak working set

Page file usage

Peak page file usage

Non-paged Pool Usage

Local machine time

Process local start time

It is rather easy to add more stuff to this as the code is available from the projects location.

One a side-note, if you want to see what data you have in your Blobs, Queues and Tables, there is an updated version of Azure Storage Explorer available now. From that site:

The most current release of Azure Storage Explorer, version 2.0, has several improvements over the original version:

The UI is WPF-based and has Outlook-style navigation.
Multiple storage accounts are supported, and you can change your storage account details directly in the tool.
In addition to text and byte views of items, blob items that are pictures can be viewed as images.

Azure Storage Explorer 2.0 does not presently allow you to act on storage items. This capability is being considered for a future update.

Let me know what you think or if you use any other tools for ASP.NET or Windows Azure.