Defrag Tools Season 1 Episode 109 Writing a CLR Debugger Extension Part 1 ( Air Date 2014-10-06 ) Genre category. Overview "In this episode of Defrag Tools, Andrew Richards starts a two part series on writing a Debugger Extension in C# for the Debugging Tools for Windows. The series follows on from the recent 9 part series on writing a Debugger Extension in C++. The C# code utilizes the Microsoft.Diagnostics.Runtime (CLRMD) and DllExports packages, available on NuGet.".