how to acess Control Reference in Thread Method

shaina2231

I hv to get control reference in thread method let suppose in this example i m setting text lable of text control but it gives exception at Statment TextBox1.Text="DFD" Exception is Cross-thread operation not valid: Control 'TextBox1' accessed from a thread other than the thread it was created on. code is below

Public Class data
Private myUtil As Util = New Util()
Private strSQL As String = ""
Public Sub savedata()
'Label1.Text = "DFDF"
' Dim d As data
TextBox1.Text = "DFDF"
Try
strSQL = "Insert into tbldata(pid,pname,pdesc) values(2, 'abc', 'description1')"
If (myUtil.ExecuteDBCommand(strSQL) = 1) Then
'MsgBox("Account(s) Assigned Sucessfully!")
Else
MessageBox.Show("Could not Save Record!", "Account Information!", MessageBoxButtons.OK, MessageBoxIcon.Information)
Exit Sub
End If

    Catch ex As Exception

    End Try

End Sub

Private Sub data\_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim t1 As Threading.Thread = New Threading.Thread(AddressOf savedata)
    t1.Start()
   

End Sub

End Class

plz help

Jimmanuel

Short version: any time you access a control you need to do it on the thread that it was created on. The Control class has InvokeRequired, BeginInvoke and Invoke properties to allow you to accomplish this. Long Version: http://www.perceler.com/articles1.php?art=crossthreads1[^] Longer Version: What's up with BeginInvoke?[^]

:badger:

Luc Pattyn

great reference! :-D

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.
[The QA section does it automatically now, I hope we soon get it on regular forums as well]

Jimmanuel

That's exactly why I used it :)

:badger: