protected void GrdClients_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GrdClients.PageIndex = e.NewPageIndex;

        dt = s.SearchBySql("Select * from Clients WHERE [Status]='Online'", "Clients");

        GrdClients.DataSource = dt;

        GrdClients.DataBind();
    }
    //private DataTable dt = null;

    private void Show(string sql, int status)
    {
        if (status == 1)
        {
            dt = s.SearchBySql(sql, "Clients");

            if (dt.Rows.Count == 0)
            {
                lbldidnt.Visible = true;
            }

            else
            {
                lbldidnt.Visible = false;
                txtuser.Text     = dt.Rows[0][0].ToString();
                txtfname.Text    = dt.Rows[0][2].ToString();
                txtlname.Text    = dt.Rows[0][3].ToString();

                dropCity.SelectedIndex = int.Parse(dt.Rows[0][5].ToString());


                txtmail.Text = dt.Rows[0][9].ToString();

                img1.ImageUrl = "~/pics/users/" + dt.Rows[0][11].ToString();



                GrdClients.DataSource = dt;

                GrdClients.DataBind();

                for (int i = 0; i < GrdClients.Rows.Count; i++)
                {
                    GrdClients.Rows[i].Cells[5].Text = s.CityFromid(int.Parse(GrdClients.Rows[i].Cells[5].Text));
                }
            }
        }

        else
        {
            txtuser.Text  = string.Empty;
            txtfname.Text = string.Empty;
            txtlname.Text = string.Empty;

            dropCity.SelectedIndex = 0;

            txtmail.Text = string.Empty;

            img1.ImageUrl = "~/pics/users/default.jpg";

            dt = s.SearchBySql(sql, "Clients");

            GrdClients.DataSource = dt;

            GrdClients.DataBind();

            for (int i = 0; i < GrdClients.Rows.Count; i++)
            {
                GrdClients.Rows[i].Cells[5].Text = s.CityFromid(int.Parse(GrdClients.Rows[i].Cells[5].Text));
            }
        }
    }