Sql 插入操作时返回当前新增的Id

 string sql = string.Format(@"insert into Table(FileSize,FileType,FilePath,FileExtName,OldFileName,NewFileName,FileHash,CreateTime,DeleteFlag)     
              values(@FileSize,@FileType,@FilePath,@FileExtName,@OldFileName,@NewFileName,@FileHash,@CreateTime,@DeleteFlag);select @@IDENTITY");

select @@IDENTITY  --用select @@identity得到上一次插入记录时自动产生的ID