登录页面基本功能完成

Login.xaml.cs

@@ -13,6 +13,7 @@ using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Shapes;
+using System.Runtime.InteropServices;
 
 namespace formula_manage
 {
@@ -21,7 +22,26 @@ namespace formula_manage
     /// </summary>
     public partial class Login : Window
     {
-        
+        [DllImport("user32.dll", SetLastError = true)]
+        static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, UIntPtr dwExtraInfo);
+        public static void PressKey(Keys key, bool up)
+        {
+            const int KEYEVENTF_EXTENDEDKEY = 0x1;
+            const int KEYEVENTF_KEYUP = 0x2;
+            if (up)
+            {
+
+                keybd_event((byte)key, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, (UIntPtr)0);
+
+            }
+            else
+            {
+
+                keybd_event((byte)key, 0x45, KEYEVENTF_EXTENDEDKEY, (UIntPtr)0);
+
+            }
+        }
+
         public Login()
         {
             WindowStartupLocation = WindowStartupLocation.CenterScreen;
@@ -59,8 +79,16 @@ namespace formula_manage
         {
             if (e.Key == Key.Enter)
             {
-                SendKeys.SendWait("{Tab}");
+                //SendKeys.SendWait("{Tab}");
+                PressKey(Keys.Tab, false);
+                PressKey(Keys.Tab, true);
             }
         }
+
+       private void Window_Loaded(object sender, RoutedEventArgs e)
+        {
+            PressKey(Keys.Tab, false);
+            PressKey(Keys.Tab, true);
+        }
     }
 }