現在網上的庫大部分都是VB的那個傳送鍵盤指令的庫，那個在WPF裡面是用不了的，WPF的話可以用System.Windows.Forms中的其實跟VB中的Microsoft.VisualBasic.Devices這個裡面的SendKeys用法差不多一樣，吐槽一下，新的這個也可以在VB中使用好像，我看MSDN中Forms中的SendKeys也能在 VB中用，真是這一個小問題浪費了我一下午的時間。貼上程式碼

[DllImport("User32.dll", EntryPoint = "FindWindow")]
        private static extern IntPtr FindWindow
 
(string lpClassName, string lpWindowName);

        [DllImport("user32.dll", EntryPoint = "FindWindowEx")]
        static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpClass, string lpszWindow);

        [DllImport("user32.dll ", EntryPoint = "SendMessage")]
        public
 
 static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam);

        [DllImport("user32.dll", EntryPoint = "SendMessage")]
        public static extern IntPtr SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);


        const int WM_CHAR = 0x0102;
        const
 
 int WM_SETTEXT = 0x000C;
        const int VK_RETURN = 0x0d;


        private void xin(object sender, RoutedEventArgs e)
        {
            Thread.Sleep(3000);
            IntPtr handle = FindWindow(null, "vshost32.exe");
            handle = FindWindowEx(handle, IntPtr.Zero, "Edit", null);
            if (handle == IntPtr.Zero)
            {
                Console.WriteLine("沒有找到控制代碼");
            //    return;
            }
            SendMessage(handle, WM_SETTEXT, IntPtr.Zero, "d");
  //          SendKeys.Send("{TAB}");
            //SendMessage(handle, WM_CHAR, (IntPtr)VK_RETURN, IntPtr.Zero);//Enter
            SendKeys.SendWait("{d}");
           // SendMessage(handle, WM_SETTEXT, IntPtr.Zero, "w");
        }

這裡現在也還有很多我還不是很瞭解的地方，等以後有時間再說吧，現在要趕專案。
最後補充一下，它們其實就是很多個WIN32的API