private void CmdtextBox_KeyPress(object sender, KeyPressEventArgs e) { //8是退格13回车38方向键上 if (e.KeyChar == (char)13 && !string.IsNullOrEmpty(CmdtextBox.Text)) { e.Handled = true; CMDprint(chelp.CheckKey(CmdtextBox.Text)); tmpcmd = CmdtextBox.Text; CmdtextBox.Clear(); } }