Last year I wrote about getting good exception stack traces for async code.

Now I've cleaned it up, made into a Portable Class Library, published the source code it under MIT-license on github and made precompiled binaries available as a NuGet package.

To recap: the goal is to get a user-experience like this, including line numbers and filenames, even on platforms like Phone which don't ship with PDBs:

To use the AsyncStackTraceEx nuget package:

1. Right-click on your project > Manage NuGet Packages > search for "AsyncStackTraceEx" and install it
     
2. You can change your Await DownloadAsync(url) statements into Await DownloadAsync(url).Log()
     
3. You can also provide more information: Await DownloadAsync(url).Log("DownloadAsync",url)
     
4. When you catch an information, rather than using Exception.StackTrace, you'll get a more useful actionable callstack with Exception.StackTraceEx()
     

Here's a side-by-side comparison of the output.