Public Class Form1

    Private Sub TreeView1_NodeMouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
        If e.Node.Name = "노드0" Then
            RichTextBox1.Text = " 선택해주세요 "
        End If

        If e.Node.Name = "노드1" Then
            RichTextBox1.Visible = False
        End If

        If e.Node.Name = "노드2" Then
            RichTextBox1.Visible = True
        End If

        If e.Node.Name = "노드4" Then
            End
        End If
    End Sub
End Class