C#实现回车键代替Tab键

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
 if (keyData == Keys.Enter &&
  (
  (
   !(ActiveControl is System.Windows.Forms.TextBox) ||
   !((System.Windows.Forms.TextBox)ActiveControl).AcceptsReturn)
  )
  )
 {
  SendKeys.SendWait("{Tab}");
  return true;
 }
 if (keyData == (Keys.Enter | Keys.Shift))
 {
  SendKeys.SendWait("+{Tab}");
  return true;
 }
 return base.ProcessCmdKey(ref msg, keyData);
} 

web:
1、用回车键代替Tab键的功能
    <script language="javascript" type="text/javascript">
        function  keyDown()
        {
            var  keycode=event.keyCode;
            var  keyChar=String.fromCharCode(keycode);
            if(keycode==13)
            event.keyCode=9;
        };
   **注意： document.onkeydown=keyDown;
    </script>