在dateview排序的问题，疑惑，请教下！

[coley]

songtable是我在页面显示的时候读取数据库后填充的数据表
view是我默认的视图
ds = New DataSet
adp.Fill(ds, "SongDate")
view = New DataView
Songtable = ds.Tables("SongDate")
view = Songtable.DefaultView
'地区排序
Sub OrderAreaName(ByVal sender As System.Object, ByVal e As System.EventArgs)
If Session("OrderType") = 1 Then
Dim diqu As New DataView
diqu = Songtable.DefaultView
diqu.Sort = "AreaName desc"
Repeater1.DataSource = diqu
Repeater1.DataBind()
Session("OrderType") = 0
Else
Repeater1.DataSource = view
Repeater1.DataBind()
Session("OrderType") = 1
End If
End Sub
现在我在排序的时候在执行到ELSE后老提示我的没有绑定到数据，默认的

[coley]

ding

[blackhero]

page _load里的
ViewState["SortOrder"]="GRPID";
ViewState["OrderDire"]="ASC";




//升降序
private void DataGrid1_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
{
string vortExp=e.SortExpression;
if(ViewState["SortOrder"].ToString()==vortExp)
{
if((string)ViewState["OrderDire"]=="Desc")
{
ViewState["OrderDire"]="ASC";
}
else
{
ViewState["OrderDire"]="Desc";
}
}
else
{
ViewState["SortOrder"]=e.SortExpression ;
}
this.linkdb ();
}

[coley]

我的是在repeater中自己写的，提取dataview来写的～不一样啊，