I have searched in the forum and solution looks to be Page.Form.Action = SiteUtils.GetCurrentPageUrl(); but it gives me error

How can I use in my .ascx file SiteUtils?

Thanks

Thank you Joe for quick reply, I dont know just how to use:

Error is like this:

CS0103: The name 'SiteUtils' does not exist in the current context

Thanks

Thanks no compilation error now but anyway postback has bug in update panel, postback second times is ok but

third times it retries all data in gridview instead... 

How can I fix it?

 anyway it is not working, maybe I am not using SiteUtils corectly

my code looks like this,

using System;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using mojoPortal.Web;
public partial class DisplayTeamTable : System.Web.UI.UserControl
{

    SqlConnection sqlConn = new SqlConnection("connectionstring");

    protected void Page_Load(object sender, EventArgs e)
    {
        Page.Form.Action = SiteUtils.GetCurrentPageUrl();
        if (!IsPostBack) {
     //
dropDownSQLds.DataBind();
ChempDropDownMain.DataBind();
grdiViewSaturniroSQLdsBound();
}
}
protected void ChempDropDownMain_SelectedIndexChanged(object sender, EventArgs e)
{

grdiViewSaturniroSQLdsBound();
gridViewSaturniroCxrili.DataBind();

}
void grdiViewSaturniroSQLdsBound()
{
testLabel.Text = ChempDropDownMain.SelectedItem.Text;
gridViewSaturniroSQLds.SelectCommand = "select * from gffTeam where idGFFChemp=" + ChempDropDownMain.SelectedItem.Value + "ORDER BY gScores DESC";
gridViewSaturniroSQLds.DataBind();
}
}      

------------------------------------------------

<%@ Control Language="C#" AutoEventWireup="true" EnableViewState="true" CodeFile="DisplayTeamTable.ascx.cs" Inherits="DisplayTeamTable" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

   <div style="width:250px;margin:50px 0px 0px 0px;">
   <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
<ContentTemplate>
    <asp:DropDownList ID="ChempDropDownMain" runat="server" EnableTheming="false"
        DataSourceID="dropDownSQLds" DataTextField="NameGeo"
DataValueField="idGFFChemp" AutoPostBack="True" Width="250px"
onselectedindexchanged="ChempDropDownMain_SelectedIndexChanged">
</asp:DropDownList>




<asp:SqlDataSource ID="dropDownSQLds" runat="server"
ConnectionString="<%$ ConnectionStrings:MSSQLConnectionString %>"
SelectCommand="SELECT * FROM [gffChemp]"></asp:SqlDataSource>



<asp:GridView ID="gridViewSaturniroCxrili" EnableTheming="false" runat="server"
DataSourceID="gridViewSaturniroSQLds" AutoGenerateColumns="False"
DataKeyNames="idGFFTeam" CellPadding="4" ForeColor="#333333" Width="250px"
GridLines="None">
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="idGFFTeam" HeaderText="idGFFTeam"
Visible="False" ReadOnly="True" SortExpression="idGFFTeam"
InsertVisible="False" />
<asp:BoundField DataField="idGFFChemp" HeaderText="idGFFChemp"
Visible="False" SortExpression="idGFFChemp" />
<asp:TemplateField>
<ItemTemplate>
<asp:image ToolTip = "ASP Image Control" ID="Image4" runat="server" ImageUrl ='<%# "ImageCSharp.aspx?ImageID=" + DataBinder.Eval(Container.DataItem, "idGFFTeam") %>' Height="40px" Width="40px"></asp:image>

</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="NameGeo" HeaderText="გუნდი"
SortExpression="NameGeo" ItemStyle-Width=150px
ItemStyle-HorizontalAlign="Left" >
<ItemStyle HorizontalAlign="Left" Width="150px"></ItemStyle>
</asp:BoundField>
<asp:BoundField DataField="gPlayed" HeaderText="თ"
SortExpression="gPlayed" ItemStyle-Width=20px ItemStyle-ForeColor="Red"
ItemStyle-HorizontalAlign="Center">
<ItemStyle HorizontalAlign="Center" Width="20px"></ItemStyle>
</asp:BoundField>
<asp:BoundField DataField="gScores" HeaderText="ქ" ItemStyle-Width=20px ItemStyle-HorizontalAlign="Center"
SortExpression="gScores" >
<ItemStyle HorizontalAlign="Center" Width="20px"></ItemStyle>
</asp:BoundField>
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="Red" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
<asp:SqlDataSource ID="gridViewSaturniroSQLds" runat="server"
ConnectionString="<%$ ConnectionStrings:MSSQLConnectionString %>"
SelectCommand="SELECT * FROM [gffTeam]"></asp:SqlDataSource>
<asp:Label ID="testLabel" runat="server" Text="Fotoer"></asp:Label>
</ContentTemplate>

</asp:UpdatePanel>
</div>  

I installed Firebug:

in dropDown list i have tree options, when first time page is loaded everything is OK,

when I am choosing in dropDown list second and third option everything is correctly displayed in Gridview,

but when I choose first option it shows all data together in Gridview for second and third option,