Debugging .Net Framework 4.0 without source code using windbg

In this post I am going to be discussing about debugging .Net Framework 4.0  using windbg . I am going to demonstrating how to have a break-point within a method, but without the framework source code. This would help in debugging .NET framework when you don’t have VS in a production environment and the same technique can be used to debug other third party assemblies where you don’t have the source code.  This is kind of like .NET Reflector where you can step through third party assemblies, but without any cost. It is not going to be as convenient as the professional version of Reflector.

I am going to be using the same example that I used to debug .NET Framework source 3.5 using windbg.

FYI the .NET framework 4.0 has private symbols available on MS symbol server, but the source code is still not available. To debug .NET framework source code it is important to have correct symbol path and here is my symbol path in the _NT_SYMBOL_PATH environment variable.

view sourceprint?
1
SRV*d:\dev\symbols*http://referencesource.microsoft.com/symbols; SRV*d:\dev\symbols*http://msdl.microsoft.com/download/symbols
Here is the sample source code that I am going to be using to demonstrate framework debugging

using System;
using System.Net;
namespace Test
{

class Program
{

static void Main(string[] args)

{

Console.WriteLine("Hello World of debugging");

var wr = WebRequest.Create("http://www.google.com");

Console.WriteLine("Web request created");

var req = wr.GetRequestStream();

Console.WriteLine("Hello World Debugging");

Console.Read();

}

}

}

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