Visual Studio 2010 (Ultimate): ASP.NET Web Service - Debug Breakpoint does not hit. Not able to Debug

Recently, I've installed VS 2010 on my machine. I also have VS 2008 installed.

Problem I'm facing is - I'm not able to debug the web services hosted on local IIS. Also, VS 2010 do not show message that source code is different.

To start debugging I'm attaching aspnet_wp.exe process. My breakpo开发者_如何转开发int is in a method which is part of a Class Library project which is targeting to .NET v3.5.

Environment Details: - Windows XP SP3 - VS 2005, 2008 & 2010 - IIS (v5.1) Targeting ASP.NET 2.0 - Web Service Targeting .NET Framework - v3.5

Does anybody have encountered same problem?

First there is an easiest method than attaching, to use the

System.Diagnostics.Debugger.Launch();

Next, go to the IIS and open the properties on you running web and check on "Web Site" tab if the the "HTTP Keep-Alives" is enable or not, and make it not enable.

If still not break, close the vs, and go to the project directory, and delete (first backup it) the xxxxx.suo file of the project. Then start it again and go for debug.