Using sdr As sqlDataReader = cm.ExecuteReader() Dim someInt As Integer = sdr.GetInt32(0) 'other details and actions End Using
是否会在退出Using代码块后关闭sdr sqlDataReader. (我相信它会,但只是想验证.)
sqlDataReader.dispose Method Releases the resources used by the DbDataReader and calls Close.
sqlDataReader.dispose Method
Releases the resources used by the DbDataReader and calls Close.