[RESOLVED] C# Unable to Show Socket Data In textbox

[-RaJ-]

I am having problem to show the Data arrived from System.Net.Sockets onto textbox

'Cross-thread operation not valid: Control 'txtDataRx' accessed from a thread other than the thread it was created on'

public void ReceiveSckData(IAsyncResult aData)
        {
            try
            {
                CSocketPacket theSockId = (CSocketPacket)aData.AsyncState;
                //end receive...
                int iRx = 0;
                iRx = theSockId.thisSocket.EndReceive(aData);
                char[] chars = new char[iRx + 1];
                System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder();
                int charLen = d.GetChars(theSockId.dataBuffer, 0, iRx, chars, 0);
                System.String szData = new System.String(chars);
                //MessageBox.Show(theSockId.dataBuffer.Length.ToString());
                MessageBox.Show(szData);
                txtDataRx.Text = szData; // I AM GETTING ERROR HERE

                
                
                
            }
            catch (ObjectDisposedException)
            {
                System.Diagnostics.Debugger.Log(0, "1", "\nOnDataReceived: Socket has been closed\n");
            }
            catch (SocketException se)
            {
                MessageBox.Show(se.Message);
            }
        }