How do I filter gridview?

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C#

ASP.NET

C#4.0

i am having a gridview binded with sqldatasource...i want to filter datasource with textbox text but with query as..

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
        ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
        DeleteCommand="DELETE FROM EXP_TBL WHERE (ExpID = @ExpID)"
        SelectCommand="SELECT * FROM EXP_TBL"
        FilterExpression="Title = SELECT * FROM EXP_TBL WHERE ((ExpID LIKE '%@SearchName%') OR (ExpName LIKE '%@SearchName%') OR (ExpAmount LIKE '%@SearchName%') OR (ExpDate LIKE '%@SearchName%') OR (ExpDescription LIKE '%@SearchName%'))">
        <DeleteParameters>
            <asp:Parameter Name="ExpenseID" />
        </DeleteParameters>
        <FilterParameters>
            <asp:ControlParameter Name="Title" ControlID="TextBox2"
                PropertyName="Text"/>
        </FilterParameters>

how to achieve this..................
it worked when filling gridview from codebehind.......
Since, i am having a formview binded to gridview.so to reduce efforts i am using sqldatasource...