int user = Convert.ToInt32(GridView.DataKeys[e.RowIndex].Value.ToString());
        GridViewRow row = (GridViewRow)GridView.Rows[e.RowIndex];
        Label lblID = (Label)row.FindControl("lblID");
        TextBox Username = (TextBox)row.Cells[0].Controls[0];
        TextBox Password = (TextBox)row.Cells[1].Controls[0];
        TextBox Email = (TextBox)row.Cells[2].Controls[0];
        GridView.EditIndex = -1;
        conn.Open();




        MySqlCommand cmd = new MySqlCommand("update user.register set Username='" + Username.Text+"',Email='" + Email.Text + "',Password='" + Password.Text +"'where Username='"+ user +"'", conn);
        cmd.ExecuteNonQuery();
        conn.Close();
        Gvbind();