protected void bt_Search_Click(object sender, EventArgs e)
        {
            SqlConnection SearchConn = new SqlConnection(SearchConnection);
            SqlCommand SearchComm = new SqlCommand("[dbo].[Search_Procedure]", SearchConn);
            SearchComm.CommandType = CommandType.StoredProcedure;

            if (!string.IsNullOrEmpty(txt_Input_Value.Text))
            {
                SearchComm.Parameters.AddWithValue("@uservalue", txt_Input_Value.Text);
            }

            SearchConn.Open();
            SqlDataAdapter SearchSDA = new SqlDataAdapter(SearchComm);
            DataSet SearchDS = new DataSet();
            SearchSDA.Fill(SearchDS);

            if (SearchDS.Tables.Count > 0)
            {
                gridv_Search_Result.DataSource = SearchDS;
                gridv_Search_Result.DataBind();
            }
            else
            {
                Вот здесь должно вызываться PopUp Control;
            }
            SearchConn.Close();