不能在DropDownList 中选择多个项
pcvc 2007-12-05 03:49:01 ddlBigCategory.DataTextField = "CategoryName";
ddlBigCategory.DataValueField = "CategoryID";
ddlBigCategory.DataSource = CategoryList;
ddlBigCategory.DataBind();
ddlBigCategory.SelectedIndex = -1;
ddlBigCategory.ClearSelection();
ddlBigCategory.Items.FindByValue("40").Selected = true;
有值为40的ListItem
无论怎么把ListItem的Selected都设为false,都出现:不能在DropDownList 中选择多个项 的错误.. 为什么????????????