I’ve added ability to catch and display function parameters and return values in Runtime Flow. Currently only primitive types such as bool, int, char, double and string are supported plus one dimensional arrays containing such types. Objects of other types are displayed as dots:
LocBaml startup
Computing an answer in GraphCalc
Strings longer than 50 characters are trimmed to not overrun the screen:
Saving a document in Thumbnail Viewer
When number of elements in an array is more than 10, the first nine elements are displayed + number of skipped element + the last element:
A long strings array in WPFNotepad
When an exception occurs the function return value is displayed as Ex:
Unhandled exception in Thumbnail Viewer
It’s technically possible to display data in objects of more complex types too and I’ll most probably return to monitoring of function parameters in next versions of Runtime Flow.
Runtime Flow blog (Understanding a control flow in a running .NET application) 