My experience reflects yours. However of late I have had to crack open the source code for ASP.NET MVC & the Azure SDK. Not so much to correct a bug but to ensure functions that I am overriding follow a similar design pattern to the original.
I've never had the need to get into ASP.NET or the .NET framework itself but being able to get into components built on top of these lower level technologies has been very helpful.
I've never had the need to get into ASP.NET or the .NET framework itself but being able to get into components built on top of these lower level technologies has been very helpful.