Answer 1

Answer 2

我想出来了。这有点像奶酪但是......

public int DdlStatusSelectedIndex
{   
  set
  {
     for (int i = 0; i < ddlStatus.Items.Count; i++)
     {
        if (ddlStatus.Items[i].Value.Equals(value.ToString()))
        {
           ddlStatus.SelectedIndex = value;
        }
     }
  }
}