Coded UI Control.Exists. System.NullReferenceException

Question

I want to check that window exists after some actions. I try:

 protected override Boolean IsPresent()
    {
        if (_mainWindow == null)
        {
                   


        

Answer 1

Exists is not what you want to use. You can use TryFind() instead.

 protected override Boolean IsPresent()
 {
     if (_mainWindow == null)
     {
         _mainWindow = new WinWindow();
         _mainWindow.SearchProperties[WinWindow.PropertyNames.ControlName] = "MainWindow";
     }
     return _mainWindow.TryFind();
 }

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