C# programming: Debug and trace

To generate a trace, use

System.Diagnostics.Trace.WriteLine("some trace");

This code works when TRACE is turned on during compiling. Add the compile option in web.config:

<compilation defaultLanguage="c#" debug="true" targetFramework="4.5">
  <compilers>
    <compiler language="c#" ... compilerOptions="/d:DEBUG;TRACE" />
  </compilers>
</compilation>

During the development, the trace can be found in the Visual Studio's console. If the application is deployed, the trace can be seen with the tool Debugview, which can be downloaded from:

https://docs.microsoft.com/en-us/sysinternals/downloads/debugview