C# Code:

/// <summary>
/// 处理回车键或系统热键
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void frmBase_KeyPress(object sender, KeyPressEventArgs e)
{
   if ((e.KeyChar == (char)Keys.Enter) &&&& ActiveControl is TextBox &&& (_EnterFocusNextControl))
   {
      if (ActiveControl is Form) return;
      if (ActiveControl != null & ActiveControl is MemoEdit) return;
      if (ActiveControl != null & ((TextBox)ActiveControl).Multiline == true) return;
      if (ActiveControl != null & ActiveControl is UserControl) return;
      if (ActiveControl != null & ActiveControl is GridControl) return;
      
      SendKeys.Send("{Tab}");//发送Tab键
   }
   else //其它键,作为系统热键处理
   {
      DoHotkey(e.KeyChar);
   }
}

/// <summary>
/// 处理热键
/// </summary>
/// <param name="key"></param>
protected virtual void DoHotkey(char key)
{
   if (key == (char)Keys.F1)
   {
      Msg.Warning("触发frmBase.DoHotkey事件！");
   }
}

//来源:C/S框架网(www.csframework.com) QQ:1980854898