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<asp:formparameter> not working

Posted on 2008-10-20
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Last Modified: 2013-11-26
Hello Experts,
i have a textbox and a button in a page called ask.aspx. like below
 <asp:TextBox ID="tbempname" runat="server"></asp:TextBox>
    <asp:Button ID="btnFindEmp" runat="server" Text="Find Emp" PostBackUrl="~/textform.aspx" />
   
and in the textform.aspx page i have gridview showing the employee details
<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" AllowPaging="True" AutoGenerateColumns="False" BackColor="LightGoldenrodYellow" BorderColor="Tan" BorderWidth="1px" CellPadding="2" DataKeyNames="EmployeeID" ForeColor="Black" GridLines="None">
        <FooterStyle BackColor="Tan" />
        <Columns>
            <asp:BoundField DataField="EmployeeID" HeaderText="Emp Number" HtmlEncode="False"
                InsertVisible="False" ReadOnly="True" SortExpression="EmployeeID" />
            <asp:BoundField DataField="FirstName" HeaderText="First Name" SortExpression="FirstName" />
            <asp:BoundField DataField="LastName" HeaderText="Last Name" SortExpression="LastName" />
            <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
        </Columns>
        <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
        <PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue" HorizontalAlign="Center" />
        <HeaderStyle BackColor="Tan" Font-Bold="True" />
        <AlternatingRowStyle BackColor="PaleGoldenrod" />
    </asp:GridView>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:northwndConnectionString %>"
        SelectCommand="SELECT [EmployeeID], [FirstName], [LastName], [Title] FROM [Employees] WHERE ([LastName] = @LastName)">
        <SelectParameters>
            <asp:FormParameter FormField="tbempname" Name="LastName" Type="String" />
        </SelectParameters>
    </asp:SqlDataSource>

so basically when i type a emp lastname in the ask.aspx, its should dispay the results in the girdview in the textform.aspx.
but IT DOES NOT DISPLAY THE GRID AT ALL. just displays a blank page.
any idea or suggestions are highly appreciated.
Thanks
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Question by:niceoneishere
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Anurag Thakur earned 1500 total points
ID: 22763997
your text box is on one page and the form parameter is on another page and you want to access the textbox text in another page
cannot be done this way
you need to pass the text box value to the second page and then only the value will be assigned to the formparameter

simple sample of same page formparameter
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.formparameter.aspx
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