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)); }