c# - How to Get the Main Window of a process(not the window handle)? -

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this question has answer here:

i have been trying reference main window of process quite sometime. went through many sites looking solution. looks provides solution window handle , not window itself.

getting process's mainwindow handle quite straight forward. seem window title expected.

i went through of apis provided user32.dll couldn't find looking for.

i need reference window because want access few members of window class accomplish work. window referring wpf window.

any in regard highly appreciated:)

thanks in advance.

you can use hwndsource.fromhwnd method.

here's simple linqpad-ready example:

void main() {     var mw = new mainw();     mw.show();      var hwnd = findwindowbycaption(intptr.zero, "testwindow");     var rootvisual = system.windows.interop.hwndsource.fromhwnd(hwnd).rootvisual;     mainw m2 = (mainw)rootvisual;     thread.sleep(500);     m2.title="is going";     thread.sleep(500);     m2.title="to close...";     thread.sleep(500);     m2.close(); }  [system.runtime.interopservices.dllimportattribute("user32.dll", entrypoint="findwindow", setlasterror = true)] static extern intptr findwindowbycaption(intptr zeroonly, string lpwindowname);  class mainw: system.windows.window {     public mainw()     {       title = "testwindow";       width = 230;       height = 100;       background = system.windows.media.brushes.aliceblue;     } }

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