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copied!<p>You will have to get the window handle to the application hosting the text box and then get a handle to the actual control that you want to get the text out of. Then you can send a WM_GETTEXT message to that control to read the value of the control. You will want to use some window spy application to get the details of the controls hosted in a window like the AutoIt Window Information Tool.</p> <p>I was able to find an example off of Experts Exchange detailing how perform the above reading the detail of the edit control in notepad: <a href="http://www.experts-exchange.com/Programming/Languages/.NET/Visual_CSharp/Q_23748618.html" rel="nofollow">http://www.experts-exchange.com/Programming/Languages/.NET/Visual_CSharp/Q_23748618.html</a> (Scroll to the bottom for the answers).</p> <pre><code>private const int WM_GETTEXTLENGTH = 0x000E; private const int WM_GETTEXT = 0x000D; [DllImport("user32.dll", SetLastError = true)] static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true)] static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); [DllImport("user32.dll")] public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, StringBuilder lParam); [DllImport("user32.dll")] public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam); IntPtr notepad = FindWindow("notepad", null); IntPtr editx = FindWindowEx(notepad, IntPtr.Zero, "edit", null); int length = SendMessage(editx, WM_GETTEXTLENGTH, 0, 0); StringBuilder text = new StringBuilder(length); int hr = SendMessage(editx, WM_GETTEXT, length, text); Console.WriteLine(text); </code></pre>

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