幕白兄：DropDownList1绑定后，再添加一列，若将该列设为默认选择列，该怎么写?

Question

DropDownList1.DataBind();／／绑定后，再添加一列
this.DropDownList1.Items.Add(new  ListItem("aa","1")); ／／将该列设为默认选择列，下面怎么写？
请帮帮忙，谢谢！

Answer 1

this.DropDownList1.Items.Insert(0,new ListItem("text","value"));

Answer 2

this.DropDownList1.Items.Insert(0,new ListItem("text","value"));
正解，
要不是放心，就再 DropDownList1.SelectValue=value

Answer 3

codeangel(http://www.wSoft.Net) 
正解~

Answer 4

this.DropDownList1.SelectedValue = "1";

Answer 5

DropDownList1.SelectValue="1"
DropDownList1.SelectedIndex=3
呵呵