public override void DoDelete()
{
try
{
if (Entity.SaveFileMode == SaveFileModeEnum.Local && !string.IsNullOrEmpty(Entity.Path))
{
Utils.DeleteFile(Entity.Path);
}
DC.Database.ExecuteSqlCommand(new RawSqlString($"delete from {DC.GetTableName<FileAttachment>()} where ID='{Entity.ID}'"));
}
catch (DbUpdateException)
{
MSD.AddModelError("", "数据被使用，无法删除");
}
}