protected void btnSave_Click(object sender, System.EventArgs e)
 {
     try
     {
         System.Collections.Generic.List <ResType> list = new System.Collections.Generic.List <ResType>();
         foreach (GridViewRow gridViewRow in this.gvwResType.Rows)
         {
             string       id           = this.gvwResType.DataKeys[gridViewRow.RowIndex].Value.ToString();
             ResType      byId         = ResType.GetById(id);
             DropDownList dropDownList = (DropDownList)gridViewRow.FindControl("ddlCBS");
             if (!string.IsNullOrEmpty(dropDownList.SelectedValue.Trim()))
             {
                 byId.CBSCode = dropDownList.SelectedValue.Trim();
             }
             else
             {
                 byId.CBSCode = null;
             }
             list.Add(byId);
         }
         ResType.Update(list);
         base.RegisterScript("alert('系统提示:\\n修改成功!');");
     }
     catch
     {
         base.RegisterScript("alert('系统提示:\\n修改失败!');");
     }
 }