protected void RemoveModel(int groupid, string username, int modelid)
    {
        int ret;

        ret = groupManagement.delete_model_from_group(modelid, groupid, username);
        if (ret == 0)
        {
            errormessage.Text = "Model not removed.  Model is not group models list or user does have leader or owner status or no such group?";
        }

        string i = DropDownList2.SelectedValue;

        SetGroupModelsData(Convert.ToInt32(i));
    }