/// <summary>
/// 显示DataView
/// </summary>
private void ShowDataView()
{
//CmbBox.Text = this.Text.Substring(0, this.Text.Length - 1);
//this.Text = "";
dropDown.Refresh();
SetDataGridView();
dropDown.Show(this, CalculatePoz());
CmbBox.Text = CmbBox.Text.Trim();
CmbBox.Focus();
CmbBox.SelectionStart = CmbBox.Text.Length;
}