vb.net通过Winsock 往PLC寄存器D写textbox里数值怎么写啊

1. Private Sub butWrite_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butWrite.Click
2. Dim i As Short
3. Dim temp() As String
4. Dim WD() As Object
5. If Not EntLink Then
6. MsgBox("还未与PLC建立联接！")
7. Exit Sub
8. End If
9. ReDim WD(Val(txtWriteCnt.Text) - 1)
10. temp = Split(txtWrite.Text, vbCrLf)
11. For i = 0 To UBound(WD) Step 1
12. If i > UBound(temp) Then
13. WD(i) = 0
14. Else
15. WD(i) = Trim(temp(i))
16. End If
17. Next i
18. ScanRet = PLC.CmdWrite(cmbWriteMry.SelectedIndex + 1, cmbWriteType.SelectedIndex + 1, Val(txtWriteAdd.Text), Val(txtWriteCnt.Text), WD)
19. txtReWrite.Text = ScanRet.ToString
20. End Sub

你这个是vb6的代码，不是vb.net的。你的问题涉及硬件，应该首要联系硬件厂商给你开发包、例子程序。