Why On Paging SqlDataSource clear FilterExpression.

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I apply FilterExpression values but when I want to change page the filter is cleared.
What can I do to avoid this?

I set filter this way:

SqlDataSource1.FilterExpression = "type= 10";

The GridView is in

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
   <contenttemplate>
        MyGridView.
   </contenttemplate>

Thank you.

[edit]Code block added, "Ignore HTML..." option disabled - OriginalGriff[/edit]

Posted 13-Jul-11 4:09am

TheCodeVB

Updated 13-Jul-11 4:25am

OriginalGriff

v2

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TheCodeVB · Answer 1 · 2011-07-13T05:15:00

I do this Workaround and works:

on click event after:

C#

{
   .....
   SqlDataSource1.FilterExpression = "some expression";
   ViewState.Add("filter", SqlDataSource1.FilterExpression);
 }
Page_Load {
    if (Page.IsPostBack) {
        if (ViewState["filter"] != null) {
            SqlDataSource1.FilterExpression = ViewState["filter"].ToString();
        }
    }
}