private void button1_Click(object sender, EventArgs e) { if (txtRoomNo.Text == "") { MessageBox.Show("房间号不能为空"); return; } roomno = txtRoomNo.Text; HIS.SS_BLL.SsRoom roomop = new HIS.SS_BLL.SsRoom(); if (roomop.IsExistRoom(roomno)) { MessageBox.Show("该房间号已存在,请重新输入"); return; } this.Close(); }
private void txtRoomNo_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter) { if (txtRoomNo.Text == "") { MessageBox.Show("房间号不能为空"); return; } roomno = txtRoomNo.Text; HIS.SS_BLL.SsRoom roomop = new HIS.SS_BLL.SsRoom(); if (roomop.IsExistRoom(roomno)) { MessageBox.Show("该房间号已存在,请重新输入"); return; } this.Close(); } }