<script runat="server">

    void UploadedFiles_PageIndexChanging(Object sender, GridViewPageEventArgs e)
  {

    // Cancel the paging operation if the user attempts to navigate
    // to another page while the GridView control is in edit mode. 
      if (UploadedFiles.EditIndex != -1)
    {
      // Use the Cancel property to cancel the paging operation.
      e.Cancel = true;

      // Display an error message.
      int newPageNumber = e.NewPageIndex + 1;
      Message.Text = "Please update the record before moving to page " + newPageNumber.ToString() + ".";
    }
    else
    {
      // Clear the error message.
      Message.Text = "";
    }

  }

  void CustomersGridView_RowCancelingEdit(Object sender, GridViewCancelEditEventArgs e)
  {
    // Clear the error message.
    Message.Text = "";
  }

</script>






<asp:GridView OnPageIndexChanging="UploadedFiles_PageIndexChanging" ID="UploadedFiles" DataSource="<%# GetUploadList() %>" runat="server" CellPadding="4" 
                        ForeColor="#333333" GridLines="Horizontal" OnRowDeleting="UploadedFiles_RowDeleting" 
                        AutoGenerateColumns="False" AllowPaging="True" Width="243px" Height="418px"
                             >
                  
                        <Columns>
                            <asp:TemplateField HeaderText="File">
                                <ItemStyle Width="100%" ForeColor="#9BB8BF" />
                                <ItemTemplate>
                                    <asp:HyperLink 
                                        ID="FileLink" 
                                        NavigateUrl='<%# "~/Uploads/" + Container.DataItem.ToString() %>' 
                                        Text='<%# Container.DataItem.ToString() %>'
                                        runat="server"
                                    />
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:CommandField ButtonType="Image" DeleteImageUrl="~/media/delete.gif" ShowDeleteButton="True">
                                <ItemStyle Width="1px" />
                                <HeaderStyle BackColor="#9BB8BF" />
                            </asp:CommandField>
                        </Columns>
                        <FooterStyle BackColor="#9BB8BF" Font-Bold="True" ForeColor="White" />
                        <RowStyle BackColor="#EFF3FB" />
                        <EditRowStyle BackColor="CadetBlue" BorderColor="DarkSlateGray" 
                                BorderStyle="Solid" BorderWidth="1px" CssClass="style.css" />
                        <SelectedRowStyle BackColor="#9BB8BF" Font-Bold="True" ForeColor="#333333" />
                        <pagersettings mode="Numeric"
                                            position="Bottom"           
                                                            pagebuttoncount="10"/>
                        <PagerStyle BackColor="#9BB8BF" ForeColor="White" HorizontalAlign="Center" />
                        <HeaderStyle BackColor="#9BB8BF" Font-Bold="True" ForeColor="White" />
                        <AlternatingRowStyle BackColor="White" />
                    </asp:GridView>
                                       
                       <asp:Label ID="Message" runat="server" Text="Label"></asp:Label>