Parent node image getting selected when click on others child nodes in the TreeView While working with tree view control having some images, I faced following issue. My treeview control has some text value and image in the parent nodes and corresponding child nodes. I bind treeview control with imagelist control to display image in the treeview. Image got binded properly and working fine, BUT when I clicks on the child nodes or some other nodes, very first parent node image get replaced with existing node image. Solution: while binding the image into treeview nodes use "SelectedImageIndex" property along with "ImageIndex" property with same image index number. Example: parentNode.ImageIndex = 0 parentNode.SelectedImageIndex = 0 VB.NET Source Code Below the vb.net source code to bind image with the treeview controls Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load 'Load the Imagelist with desired images Dim customImageList As New ImageList customImageList.Images.Add("AMandatory", Bitmap.FromFile("C:\AMandatory.ico")) customImageList.Images.Add("BDiscretionary", Bitmap.FromFile("C:\BDiscretionary.ico")) customImageList.Images.Add("AAMandatory", Bitmap.FromFile("C:\AAMandatory.ico")) customImageList.Images.Add("BBDiscretionary", Bitmap.FromFile("C:\BBDiscretionary.ico")) 'Bind ImageList with TreeView TreeView1.ImageList = customImageList 'Create a ParentNode Dim rootNodeMandatory As TreeNode = TreeView1.Nodes.Add("Mandatory Text") 'Bind first image from imagelist rootNodeMandatory.ImageIndex = 0 rootNodeMandatory.SelectedImageIndex = 0 'Create the child Node Dim childNodeMandatory As TreeNode childNodeMandatory = rootNodeMandatory.Nodes.Add("Mandatory Child Text") 'Bind third image from imagelist childNodeMandatory.ImageIndex = 2 childNodeMandatory.SelectedImageIndex = 2 'Create another ParentNode Dim rootNodeDiscretionary As TreeNode = TreeView1.Nodes.Add("Discretionary Text") 'bind second image from imagelist rootNodeDiscretionary.ImageIndex = 1 rootNodeDiscretionary.SelectedImageIndex = 1 'Create the child Node Dim childNodeDiscretionary As TreeNode childNodeDiscretionary = rootNodeDiscretionary.Nodes.Add("Discretionary Child Text") 'Bind fourth image from imagelist childNodeDiscretionary.ImageIndex = 3 childNodeDiscretionary.SelectedImageIndex = 3 End Sub |
Tuesday, October 27, 2009
Parent node image getting selected when click on others child nodes in the TreeView
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