MemoryStream 上的 BinaryReader 保持为空

Question

            SyncLock _client.GetStream
                Dim bArray() As Byte
                Dim bWriter As New BinaryWriter(_client.GetStream)
                Dim bf As New BinaryFormatter
                Dim mStream As New MemoryStream
                bf.Serialize(mStream, dSet)
                'Send tagIdentifier
                bWriter.Write(bTag)
                'Send the Object length
                bWriter.Write(CInt(mStream.ToArray.Length))
                'It's not null, value of 3024
                Console.WriteLine("Mstream : " & mStream.ToArray.Length)
                'Initialize the BinaryReader
                Dim bReader As New BinaryReader(mStream)
                Do
                    bArray = bReader.ReadBytes(1024)
                    ''''''''''''''bArray stay at 0'''''''''''''''
                    bWriter.Write(bArray)
                Loop While bArray.Length = 1024
                bWriter.Flush()
            End SyncLock

所以我有这段代码，我试图做的是发送一个序列化的数据集。

所以我把序列化的dSet放在memoryStream中，并将其转换为一个字节数组，用BinaryWritter发送它。

此外，即使 mSteam 的值为 3024，BinaryReader 指针似乎也保持在 0

Answer 1

由于您刚刚写入了 MemoryStream，因此指针位于没有要读取的内容的末尾。 在尝试从中读取之前，将位置重置回 0(零(：

    mStream.Position = 0