I\'m developing a .NET 4.5 WPF app and having UI rendering performance issues.
After some googling, I came across WPF Performance Suite page which describes exactly
As it turns out, later versions of Visual Studio have this built in, so right now with Visual Studio 2013, I can create a new profiler session by opening up Visual Studio, and from the top menu there is an Analyze drop down, just go to Analyze -> Profiler -> Attach/Detach to attach it to an existing process running in Debug mode (I seem to have to do this inside of another Visual Studio window or else its grayed out). But, side note: its really bad and not very intuitive...I would recommend using some nicer, commercial profilers instead because they are much simpler.