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How to display image on TreeMenuItem in WinForms TreeNavigator?

Platform: WinForms |
Control: TreeNavigator

Display image on TreeMenuItem

In TreeMenuItem, the image can be displayed by creating custom control which is inherited from TreeMenuItem. The menu item image can be shown by following the steps.

1. Need to create class which is inherited from TreeMenuItem.

2. Need to create custom property to assign the ItemImage.

3. Need to overrides the OnPaint event and draw the image in required location.


//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()
    /// <summary>
    /// Initialize the item image.
    /// </summary>
    private Image m_ItemImage = null;
    /// <summary>
    /// Gets or sets the item image.
    /// </summary>
    public Image ItemImage
            return m_ItemImage;
            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));


'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()
    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
            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
    End Sub
End Class


 Show TreeMenuItem with image

Figure 1. TreeMenuItem shows with Image.


C#: TreeMenu_Image_C#

VB: TreeMenu_Image_VB

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