参考:
dList32.DataSource = ds
dList32.DataTextField = "NameCHshort"
dList32.DataBind()
dList32.Items.Insert(0, " ") 《== 注意这里
dList32.DataSource = ds
dList32.DataTextField = "NameCHshort"
dList32.DataBind()
dList32.Items.Insert(0, " ") 《== 注意这里
调试欢乐多
DropDownList1.CleanSelection();
DropDownList1.Items.Insert(0,"---Select---");
youDoropDownList.additime(new Listiteim());
ListItem itm=new ListItem();
DropdownList.DataSource=ds;
DropdownList.DataTextField="NAME";
DropdownList.DataValueField="SN";
DropdownList.DataBind();
itm.Text="请选择";
itm.Value="0";
DropdownList.items.Insert(0,itm);
{
ddl_RecordSchoolid.Items[s].Selected=false;
}