ListItem li = new ListItem();
li.Text = "南京";
li.Value = "1";
DropDownList1.Items.Add(li);
ListItem li = new ListItem("扬州", "2");
DropDownList1.Items.Add(li);
DropDownList1.Items.Add(new ListItem("徐州", "3"));
string[] city={"南京","扬州","徐州","苏州"};
for(int i=0;i<city.Length;i++)
{
DropDownList1.Items.Insert(i,city[i]);
DropDownList1.Items[i].Value = i.ToString();
}
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