/// <summary>
/// 删除数据
/// </summary>
/// <returns>返回Json串</returns>
public string Delete()
{
long id = Convert.ToInt64(System.Web.HttpContext.Current.Request.Params["id"]); //主表主键
var deletedresult = CorrespondenceSettingsService.Delete <System.Int64>(id);
return(DataConverterHelper.SerializeObject(deletedresult));
}