private void tbxCameraName_Leave(object sender, EventArgs e) { Regex regex = new Regex(@"^[a-zA-Z0-9_\u4e00-\u9fa5]+$"); Match match = regex.Match(tbxCameraName.Text); if (!match.Success) { MessageBox.Show("请输入合适的相机名称!"); tbxCameraName.Focus(); tbxCameraName.Text = StaticClass.Temper_CameraName; } else { DMSDK.DM_SetOSDInfo_CameraName(StaticClass.tempConnect, tbxCameraName.Text, iDisplayName, iDisplayNameX, iDisplayNameY); sqlCreate.UpDate_CameraName(StaticClass.Temper_CameraId, tbxCameraName.Text, StaticClass.DataBaseName); StaticClass.Temper_CameraName = tbxCameraName.Text; } }