[RESOLVED] Backgroundworker - Can not get datagrid to update

[circuits2]

Ok, still, all of those variables are declared in the UI thread. That means that any routine that is called by DoWork cannot use them. Also, you need to remove the MsgBox calls from DoWork. MessageBox should be called from ProgressChanged.

These cannot be accessed by any routine that is called by your backgroundworker:

Dim clNo As String
Dim serverSocket As New TcpListener(8888)
Dim clientSocket As TcpClient
Dim counter As Integer
 
Dim requestCount As Integer
Dim bytesFrom(10024) As Byte
Dim dataFromClient As String
Dim sendBytes As [Byte]()
Dim serverResponse As String
Dim rCount As String
 
Dim RtnString As String = ""
 
Dim D(20) As String