[原帖地址]http://topic.csdn.net/u/20111019/17/ac098c48-ed25-4e1f-acd0-ec192ca44eac.html
'原先错误的写法! ------------------------- Private Sub Button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles Button1.Click Dim MyThread As New System.Threading.Thread(AddressOf sum) MyThread.Start() End Sub Private Sub sum() Dim i,sum As Integer For i = 0 To 100 sum += i Next Me.Text = CStr(sum) '在这里就会报错,教我"如何跨线程调用windows窗体控件",表示没看懂 End Sub ------------------------------------- '正确的线程委托写法 ------------------------------------- Private Delegate Sub myDelegate(ByVal myString As String) '自定义一个委托 Private Sub SetWindowText(ByVal myString As String) '与委托相同签名的函数或过程 Me.Text = myString End Sub Private Sub Button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles Button1.Click Dim MyThread As New System.Threading.Thread(AddressOf sum) MyThread.Start() End Sub Private Sub sum() Dim i,sum As Integer For i = 0 To 100 sum += i Next Me.Invoke(New myDelegate(AddressOf SetWindowText),sum.ToString) '委托的调用 End Sub