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//绑定数据,且第一项为空
ddlOperator.DataSource = DALCommon.GetList();
ddlOperator.DataTextField = "_Name";
ddlOperator.DataValueField = "ID";
ddlOperator.DataBind();
ddlOperator.Items.Insert(0, new ListItem("", "-1"));
string wtUser = (string)(Session["User"]);
//循环,选中制定的的项
for (int i = 0; i < ddlOperator.Items.Count; i++)
{
if (ddlOperator.Items[i].Text == wtUser)
{
ddlOperator.Items[i].Selected = true;
break;
}
}
ddl.SelectedValue="你要的值";