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02 May 2009
Solution to the “You tried to assign the Null value to a variable that is not a Variant data type.” Exception
By default the DataSource wizard passes parameters for AutoNumber primary keys. If you are getting this error: You tried to assign the Null value to a variable that is not a Variant data type. Then you need to remove that default parameter. This is what Read More...
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06 April 2009
Solution to “Operation must use an updateable query” Exception when writing to an Access Database from ASP.NET
Could be a couple of things: The file is marked as read-only. Right click on file, uncheck “read only”. The application pool identity doesn’t have write permissions to the folder that contains the MDB. Find the identity of the application pool (using Read More...
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03 April 2009
Mobile Browser Detection in ASP.NET
Before last week the only two viable Mobile Browser Detection options were: WURFL – Great for non-.NET solutions.  .NET APIs lack support DeviceAtlas – Great for .NET solutions, but it’s starts at $99/server/year.  DeviceAtlas claims to have Read More...
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13 March 2009
Access Database Membership, Profile, Role and Personalization Providers for ASP.NET
ASP.NET doesn’t ship with Membership, Profile, Role or Personalization providers out of the box.  Imar Spaanjaars has a great article on how to setup a site using the “Sample Access Providers” provided by Microsoft. http://imar.spaanjaars.com/ http://imar.spaanjaars.com/QuickDocId.aspx?quickdoc=404 Read More...
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03 March 2009
The simplest DataSet to Excel solution
Tim Mackey has a very simple method for converting DataSets to Excel spreadsheets. http://tim.mackey.ie/HowtoExportADatasetToExcelCAspnet.aspx Thanks Tim! Read More...
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23 February 2009
Binding Hierarchical DataSets to TreeView Controls
OOB the ASP.NET TreeView control doesn’t support binding to Hierarchical DataSets. Ralph Varjabedian created a HierarchicalDataSet class to help with this.  Read more about it here .   Here’s a snippet…it’s simple to implement: TreeView1.DataSource Read More...
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19 February 2009
How to reuse TreeNodeCollection in Windows Forums apps
I’m creating an app and need the same data set for two tree views. Nodes.AddRange only works with a TreeNode[] and the TreeNodeCollection is read-only and doesn’t have a ctor.   I first tried something like this: TreeNode[] nodes = new TreeNode[treeView1.Nodes.Count]; Read More...
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05 November 2008
PDC Wrapup - My fav sessions
PDC was great this year! Here's a quick list of my favorite sessions of technologies and products that Social Bookmarking will use soon... Stuff we'll use this year: Velocity ADO.NET Data Services Visual Studio 2010 C# 4.0 j Query MVC ASP.NET 4.0 ....Next Read More...
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17 April 2008
Short and Sweet "Silverlight 2.0, LINQ and WCF in 5 Minutes" Video
Download Source This is the first video in my new "Short and Sweet" video series. I'm going to continue with Silverlight, LINQ and WCF path for the series. Please ping me if you have an idea for a future video. This video takes you through the minimum Read More...
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25 November 2007
LINQ and Web Application Connection Strings
It's usually a good idea to seperate Biz Layer Objects and Data Access Objects into seperate assemblies, but when you do that and use LINQ to SQL (.dbml) files the DataContext object default ctor uses the Settings file that is automattically generated Read More...
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30 August 2007
Binding Complex Properties to GridView
Binding simple (int/string, etc) type properties to a TemplateColumn in a GridView is easy, but when you need to bind the Grid to an object that has properties that aren't simple types it gets a bit more complex. The Bind method only works with simple Read More...
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12 June 2007
MSDN/TechNet is looking for senior Web Developers
My team, MSDN/TechNet, is looking for 3 senior developers. This is a great opportunity to come help us innovate using latest Microsoft technologies. Please send your resume to ideodevj@microsoft.com to be considered for this position. MSDN and TechNet Read More...
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24 May 2007
Running two different versions of ASP.NET on the same server
I just installed Orcas and was getting this error when running a performance test: Event Type: Error Event Source: ASP.NET 2.0.50727.0 Event Category: None Event ID: 1062 Date: 5/24/2007 Time: 11:11:12 AM User: N/A Description: It is not possible to run Read More...
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27 March 2007
Embedded MasterPage with VirtualPathProvider and Resource files
Piyush Shah , a dev on my team, developed a way to embed MasterPages in assemblies using VirtualPathProvider and Resource files. It's a really slick way of reusing master pages for multiple applications. Read more here: http://blogs.msdn.com/shahpiyush/archive/2007/03/09/Sharing-Master-Pages-amongst-Applications-by-Embedding-it-in-a-Dll_2E00_.aspx Read More...
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25 March 2007
Web Application Projects do not support dynamic Profile class generation
I found out the hard way that Web Application Projects do not support dynamic class generation for profile providers. For now you need to use the "WebSite" type project instead of WAP or you can use this ASP.NET WebProfile Generator add-in . I'm trying Read More...
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