/// <summary>
/// 设置选中的值，并更新子控件
/// </summary>
/// <param name="value">值</param>
public RadComboBoxClientCascade SetValue(string value)
{
RadComboBoxItem item = box.SetSelectedValue(value);
if (item != null)
{
currentArg = new RadComboBoxItemsRequestedEventArgs();
currentArg.Value = item.Value;
currentArg.Text = item.Text;
RaiseSelectChange();
}
return(this);
}