Visual Studio.NET close dialog of another program

Question

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close a message box from another program using c#

There is another program on my computer that displays a message box every once in a while. Is it possible to use .NET to close these dialogs when they pop up?

http://www.codeproject.com/Articles/22257/Find-and-Close-the-Window-using-Win-API — Matthew, Sep 09 '12 at 17:08
fantastic let me try this? do you think itll work on message boxes? — Tarang, Sep 09 '12 at 17:14
visit http://stackoverflow.com/questions/11729281/close-a-message-box-from-another-program-using-c-sharp Hope it should help. — Jignesh Thakker, Sep 09 '12 at 17:21

score 1 · Accepted Answer · answered Sep 09 '12 at 18:07

Use FindWindow and SendMessage winapi functions like here http://www.codeproject.com/Articles/22257/Find-and-Close-the-Window-using-Win-API

You must create a continous loop wich closes that window, such as while (true). I used a Timer because it's more eficient. Here's my code:

[DllImport ("user32.dll")] public static extern IntPtr FindWindow  (String sClassName, String sAppName);
[DllImport ("user32.dll")] public static extern int    SendMessage (IntPtr hWnd, uint Msg, int wParam, int lParam);
    Timer t;
    public Form1 ()
    {
        InitializeComponent ();
        t=new Timer ();
        t.Interval=100;
        t.Tick+=delegate
        {
            IntPtr w=FindWindow (null, "Message box title");
            if (w!=null) SendMessage (w, 0x0112, 0xF060, 0);
        };
        t.Start ();
    }

Where WM_SYSCOMMAND=0x0112 public const int SC_CLOSE = 0xF060;

If you don't know the window's class name (like above) use null and message box's title as paramers. Of course, that means that the message box has a title.

If title of dialog the same with title of App (Ex: Microsoft Excel) it will close app. — D T, Mar 21 '19 at 05:05

Visual Studio.NET close dialog of another program

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