In desktop applications and services we frequently take System.Net traces to diagnose issues using the HttpWebRequest class, HttpListener, sockets, smpt etc… (and now the HttpClient classes).  We traditionally use the application configuration file...

I was playing with the Push Notifications Sample in the Metro style apps Dev Center and thought I would share my simple ASP.Net application files to show you how to complete this sample and see it work! First you need an IIS server that can run ASP.Net...

I was anxious to see what real memory usage would look like on my low end netbook. It was better than Windows 7! Less than 500M. One problem I had was the native resolution of my netbook is1024X600 and the Metro Style apps will not load at that resolution...

I needed a simple WildCard Extension to remove a header and could not find one. This needs a little more error checking code but can get the job done. If you use it and add some enhancements or find problems, let me know and I will tune up the example...

If you build a WebBrowser control based application you will notice that Geolocation does not work properly. You do not get the prompt to accept the website “wants to track your physical location”. Because you do not get that prompt, you cannot accept...

I see some horrible solutions for this out on the web. Most involve setting the proxy for the entire machine and then toggling it back off. Here is a class that will allow you to set it ONLY FOR THE PROCESS that the control is hosted in. You could call...

I had trouble installing this update this morning. I found that since I had installed the Windows 7.1 SDK as well, I had to first install Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1 KB2519277. This seemed to allow...

OK, really not that secret. Basic Authentication headers are pretty simple. When the server returns 401 and the header: WWW-Authenticate: Basic. The server wants you to send the username and password in this format: jeff:mypassword and then encode...

Code that was working on a machine with the 2.0 (3.5) version of the .NET framework all of a sudden failed when this was flipped to the 4.0 version of the framework. The end error was “The request was aborted, cannot create SSL/TLS secure channel” and...

Starting with Windows XP SP2, the Crypto API CRL check uses WinHttp (see: http://support.microsoft.com/kb/887196 ). This can cause some confusion with network administrators and developers since they might have set proxy information for WinInet or applications...

Creating a WCF Client in Visual Studio 2010, I struggled with this error. I was running as the currently logged on user and the service was as well so this made no sense to me. I found that this entry in the client app.config was the culprit: <identity>...

There are two settings for WinHttp Proxy settings for a 64 Bit OS. One applies to the 64 bit environment and one for the 32 bit environment. You can use netsh for Windows 2008, Windows 7 and later OSes and proxycfg.exe for earlier OSes. If you are confused...

Understanding Problems with MS10-049, KB 980436 and IETF RFC5746 Microsoft released a Security update MS10-049: Vulnerabilities in SChannel could allow remote code execution. This update patches vulnerabilities in SChannel (TLS) that can be exploited...

I needed to create an Excel Spreadsheet with a Connection object and link a QueryTable to it. I could not find a good example of this so I thought I would share. Please drop me a note if you found this useful! Code listing for sample ( Copy Code ): private...

OK, I am a dummy. I spent 30 minutes trying to associate my account with the MSDN Blog sign in so I could author a blog. Since the change of the site it asks you for your screen name and password. Since I have my Live account associated with the Blog...

A seemingly easy thing to do that I could not find documentation for! string astr; foreach (DataRowView aRow in listBox1.SelectedItems ) { astr = aRow["TopicId"].ToString(); astr = aRow["TopicText"].ToString(); } TopicId and TopicText are the name of...

Having issues developing native C++ Webservices? Here is an AWESOME blog: http://blogs.msdn.com/haoxu/

I was excited to try URL Rewrite to create some rules on my internal web site. I added a rule to map a query string like http://mysite/treepage.aspx?nodeName=RedColors to http://mysite/RedColors . After doing this I found that the images of the treeview...

The .NET framework version 2.0 has the ability to get the IE proxy Settings and use them when making a WebRequest. However it only will read the http static proxy and not use the https value when specified. See this example: I would expect this code to...

The requirement was to assign a click event handler to all Label Controls contained in a .NET User Control. This is a simple technique but I found there was no good documentation on how to do this. To illustrate how to do this, I created a simple Windows...

There are new checks in Windows 7 to prevent you from doing bad things with the WinHttp APIs. In the sample code below, I do not get an error pre-Windows 7 but on Windows 7 the WinHttpWriteData call results in bResults being 0 and GetLastError() returns...

There seems to be no simple end-to-end walkthrough for creating a simple HttpListener based SSL Listener that includes how to configure the computer by generating and installing a Certificate for this listener. Basic concepts covered: Write the...

This information is available in the help file as well. For more options please refer to the Help Documentation include with DebugDiag. Install the latest Debug Diagnostics from http://download.microsoft.com (search for Debug Diagnostics once on that...

This error message is caused because the process is not being able to validate the Server Certificate supplied by the Server during an HTTPS (SSL) request. The very first troubleshooting step should be to see if the server supplied certificate and every...

One technique people use in accessibility applications is to kick off an application and then grab the Window handle of the process to hook it or do other processing. With loosely coupled Internet Explorer (LCIE) this is a little more difficult that simply...