TreeView selectedNode is always null

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Hi!

I have a problem with my treeView. I build my treeview out of a database through LINQ-To-Entity statements.

treeView1.Nodes.Add(tree.InitializeTreeView_R3());

My Treeview is then populated and it works great. Now I´m facing the problem that i could not get the actual selectedNode text, name or tag of the node. SelectedNode is always null! Why?

http://www.pic-upload.de/view-21565757/Unbenannt.png.html

I want to write the text of the current selectednode into a textbox.

I tried an alternative way of get it to work. I tried to get the actual tooltiptext into a textbox. But I don´t know how to get the tooltiptext of the current clicked/selected node.
Something like

<pre>myToolTip.GetToolTip(myControl)</pre>

does not work, because it is a tooltip within the treeview-control and not a tooltip defined by myself(mytooltip). How can i get the actual tooltiptext of my treeview into a textbox?

regards Adam

Posted 8-Dec-13 2:08am

Member 8857897

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OriginalGriff · Accepted Answer · 2013-12-08T02:23:00

Despite the Linq-to-entity stuff, it's a standard TreeeView, and I know the SelectedNode property works - I use it myself.
So the question is - where are you trying to read it, when are you trying, and exactly how are you doing it? Because

C#

private void tree_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
    {
    TreeView tv = sender as TreeView;
    if (tv != null)
        {
        Console.WriteLine(tree.SelectedNode);
        Console.WriteLine(tv.SelectedNode);
        Console.WriteLine(tv.SelectedNode.Text);

all works fine...as does:

C#

private void tree_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
    {
    TreeView tv = sender as TreeView;
    if (tv != null)
        {
        TreeNode selected = e.Node;
        if (selected != null)
            {

Which is what I normally do.