在Visual Basic中使用TCP/IP协议需要使用Socket对象。您可以使用Socket类中的方法来建立一个TCP网络连接、发送和接收数据，处理各种异常情况。以下是示例代码：
建立TCP网络连接：
Dim client As TcpClient = New TcpClient()
client.Connect("ServerIP", ServerPort)
发送数据：
Dim data As Byte() = System.Text.Encoding.ASCII.GetBytes("Hello, this is a test message")
Dim stream As NetworkStream = client.GetStream()
stream.Write(data, 0, data.Length)
接收数据：
Dim buffer As Byte() = New Byte(1024) {}
Dim stream As NetworkStream = client.GetStream()
Dim received As Integer = stream.Read(buffer, 0, buffer.Length)
Dim message As String = Encoding.ASCII.GetString(buffer, 0, received)
处理异常情况：
Try
'执行Socket操作
Catch ex As SocketException
'处理Socket异常情况
Catch ex As Exception
'处理其他异常情况
Finally
'关闭Socket连接
End Try
您可以参考MSDN上的官方文档学习更多有关Socket对象和TCP/IP协议的知识。