How to display image on TreeMenuItem in WinForms TreeNavigator?

//To specify the TreeMenuItem image
this.treeMenuItem1.ItemImage = this.imageListAdv1.Images[0];
this.treeMenuItem2.ItemImage = this.imageListAdv1.Images[1];
this.treeMenuItem3.ItemImage = this.imageListAdv1.Images[2];
this.treeMenuItem4.ItemImage = this.imageListAdv1.Images[3];
 
/// <summary>
/// Creating custom class
/// </summary>
public class TreeMenuItemEx : TreeMenuItem
{
    public TreeMenuItemEx()
    {
        //Initialization
    }
 
    /// <summary>
    /// Initialize the item image.
    /// </summary>
    private Image m_ItemImage = null;
 
    /// <summary>
    /// Gets or sets the item image.
    /// </summary>
    public Image ItemImage
    {
        get
        {
            return m_ItemImage;
        }
        set
        {
            m_ItemImage = value;
        }
    }
 
    /// <summary>
    /// Overrides the OnPaint.
    /// </summary>
    /// <param name="e">The PaintEventArgs contains the event data.</param>
    protected override void OnPaint(PaintEventArgs e)
    {
        if (this.ItemImage != null)
        {
            SizeF textSize = e.Graphics.MeasureString(this.Text, this.Font);
            int textwidth = (int)Math.Ceiling(textSize.Width);
            //Draw the Menu item image
            e.Graphics.DrawImage(this.ItemImage, new Rectangle(this.Width - 70, 10, 30, 30));
        }
        base.OnPaint(e);
    }
}

'To specify the TreeMenuItem image
Me.treeMenuItem1.ItemImage = Me.imageListAdv1.Images(0)
Me.treeMenuItem2.ItemImage = Me.imageListAdv1.Images(1)
Me.treeMenuItem3.ItemImage = Me.imageListAdv1.Images(2)
Me.treeMenuItem4.ItemImage = Me.imageListAdv1.Images(3)
 
''' <summary>
''' Creating custom class
''' </summary>
Public Class TreeMenuItemEx
    Inherits TreeMenuItem
    Public Sub New()
        'Initialization
    End Sub
 
    ''' <summary>
    ''' Initialize the item image.
    ''' </summary>
    Private m_ItemImage As Image = Nothing
 
    ''' <summary>
    ''' Gets or sets the item image.
    ''' </summary>
    Public Property ItemImage() As Image
        Get
            Return m_ItemImage
        End Get
        Set(ByVal value As Image)
            m_ItemImage = value
        End Set
    End Property
 
    ''' <summary>
    ''' Overrides the OnPaint.
    ''' </summary>
    ''' <param name="e">The PaintEventArgs contains the event data.</param>
    Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        If Me.ItemImage IsNot Nothing Then
            Dim textSize As SizeF = e.Graphics.MeasureString(Me.Text, Me.Font)
            Dim textwidth As Integer = CInt(Fix(Math.Ceiling(textSize.Width)))
            'Draw the Menu item image
             e.Graphics.DrawImage(Me.ItemImage, New Rectangle(Me.Width - 70, 10, 30, 30))
        End If
        MyBase.OnPaint(e)
    End Sub
End Class