c# - WPF FrameworkElement Mouse Click issue -

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in wpf app have bunch of customcontrols inside grid. processing mouse clicks on them use mouseleftbuttondown event of grid , in event handler check customcontrol clicked:

private void grid_mouseleftbuttondown(object sender, mousebuttoneventargs e)     {         frameworkelement fesourcecomm = e.source frameworkelement;         mycustomcontrol scurrentcomm = new mycustomcontrol();                     try         {             scurrentcomm = (mycustomcontrol)fesourcecomm;         }         catch (exception)         { ...

the problem appeared when placed customcontrols in usercontrol , inside grid. in case approach doesn't work.
checked type of click source in each case e.source.gettype().tostring(); , following results:

when there no problem (in case put customcontrols in grid without usercontrol)

myprojectnamespace.mycustomcontrol

when put customcontrols in usercontrol , in grid

myprojectnamespace.usercontrols.myusercontrolname

when put customcontrols in usercontrol , in grid , load usercontrol external file xamlreader.load

system.windows.controls.usercontrol

so, question:
how make customcontrols vizible e.source when inside of usercontrol?

e.originalsource tell specific element click happened on. if not customcontrol, walk parent chain of originalsource until find customcontrol


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