How to avoid winforms treeview icon changes when item selected

user_102715 0
Viewed 18740

I'm experimenting with a treeview in a little C#/Winforms application. I have programatically assigned an ImageList to the treeview, and all nodes show their icons just fine, but when I click a node, its icon changes (to the very first image in the ImageList). How can I get the icon to remain unchanged?

BTW: The "SelectedImageIndex" is set to "(none)", since I don't really know what to set it to, since the image-index is different for the nodes (i guess?).

UPDATE: Here is the code of the application (I'm using Visual Studio Express 2008):

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            treeView1.BeginUpdate();
            treeView1.Nodes.Clear();
            treeView1.Nodes.Add("root","Project", 0);  

            treeView1.Nodes[0].Nodes.Add("Foo", "Foo", 2);
            treeView1.Nodes[0].Nodes[0].Nodes.Add("Fizz", "Fizz", 3);
            treeView1.Nodes[0].Nodes[0].Nodes.Add("Buzz", "Buzz", 3);

            treeView1.Nodes[0].Nodes.Add("Bar", "Bar", 1);
            treeView1.Nodes[0].Nodes[1].Nodes.Add("Fizz", "Fizz", 2);
            treeView1.Nodes[0].Nodes[1].Nodes[0].Nodes.Add("Buzz", "Buzz", 3);

            treeView1.EndUpdate();
            treeView1.ImageList = imageList1;
        }
    }
}
treeview winforms c#
3 Answers

what can be done here is, we can utilize TreeView's HitTest method which gives the node information at a given point. Then with that info we can reset the Image to previous. Setting SelectedImageIndex to ImageIndex .Like so

var selectedNodeInfo = treeView.HitTest(treeView.PointToClient(Cursor.Position));
selectedNodeInfo.Node.SelectedImageIndex = selectedNodeInfo.Node.ImageIndex;
user_88469590
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