Me.TreeView1.Nodes.Add(nodeTemp)
        Return nodeTemp
        nodeTemp.SelectedImageIndex = CInt(CLASSIO.Directory)
    End Function

    Private Sub btnOpenBrower_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOpenBrower.Click
        '多线程
        Dim t As Threading.Thread = New Threading.Thread(AddressOf Me.OpenBrower)
        t.Start()

        '单线程
        'Me.OpenBrower()
    End Sub
End Class
Public Enum CLASSIO
    File = 1
    Directory = 0
End Enum
Public Delegate Function AddFileHandler(ByVal str As String, ByVal cls As CLASSIO, ByVal Node As TreeNode) As TreeNode
Public Delegate Function AddTreeNodeHandler(ByVal str As String) As TreeNode