Hi, i have been trying to use the javascript confirmation box to delete files from a Gridview, however when ever i click "cancel" on the box it still deletes the file! i really need some help, heres the code i have:

c# Syntax (Toggle Plain Text)

 <asp:TemplateField HeaderText="Delete File">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="Delete" 
                                    OnClick="DeleteRowButton_Click" OnClientClick="confirm_delete()">
         Permanently Delete This File</asp:LinkButton>
                            </ItemTemplate>
 
 
<script type="text/javascript">
    function confirm_delete() {
        if (confirm("Are you sure you want to delete the highlighted file? ") == true)
            return true;
        else
            return false;
 
    }
     </script>
 
 
//Delete a selected file from the Server and Gridview
void DeleteRowButton_Click(Object sender, EventArgs e)
        {
 
                //Delete file from the server
                String fileName = GridView1.SelectedRow.Cells[1].Text;
 
                String filePath = "/UploadedUserFiles/" + User.Identity.Name + "/" + fileName;
 
                System.IO.File.Delete(Server.MapPath(filePath));
 
                lblDeleteResult.Text = fileName + " was successfully deleted!";
 
                // Programmatically delete the selected record from the gridview
                GridView1.DeleteRow(GridView1.SelectedIndex);
                //Refresh Gridview
                GridView1.DataBind();
 
                UploadDetails.Visible = false;
 
        }

<asp:TemplateField HeaderText="Delete File"> <ItemTemplate> <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="Delete" OnClick="DeleteRowButton_Click" OnClientClick="confirm_delete()"> Permanently Delete This File</asp:LinkButton> </ItemTemplate> <script type="text/javascript"> function confirm_delete() { if (confirm("Are you sure you want to delete the highlighted file? ") == true) return true; else return false; } </script> //Delete a selected file from the Server and Gridview void DeleteRowButton_Click(Object sender, EventArgs e) { //Delete file from the server String fileName = GridView1.SelectedRow.Cells[1].Text; String filePath = "/UploadedUserFiles/" + User.Identity.Name + "/" + fileName; System.IO.File.Delete(Server.MapPath(filePath)); lblDeleteResult.Text = fileName + " was successfully deleted!"; // Programmatically delete the selected record from the gridview GridView1.DeleteRow(GridView1.SelectedIndex); //Refresh Gridview GridView1.DataBind(); UploadDetails.Visible = false; }

basically the DeleteRowButton_Click method runs regardless of whether i click cancel. i would like it to run this method if i click "ok" and do nothing when a click "cancel"

any ideas?
thanks