IIS Logs

To find out the IIS logs location of a site:

1. Open IIS Manager;

2. Click the Web Site;

3. Find the Logging icon and double click it;

4. Find the location of the logs in the Directory text box.

 

If you are using IIS Express of the Visual Studio, the logs location of  IIS Express is at %userprofile%\Documents\IISExpress\Logs

In C#, to add infomation to the IIS logs, use:

    Response.AppendToLog("your debug info");

or

    System.Web.HttpContext.Current.Response.AppendToLog("your debug info");