CODEWITHSUNDEEP
c#treeview
neo2862
neo2862

Reputation: 1526

TreeView label editing question

I have a treeview with nodes like this: "Foo (1234)", and want to allow the user to rename the nodes, but only the Foo part, without (1234). I first tried to change the node text in BeforeLabelEdit like this:

private void treeView1_BeforeLabelEdit(object sender, NodeLabelEditEventArgs e)
{
    e.Node.Text = "Foo";
}

But when I click the node to edit it, "Foo (1234)" appears in the textbox.

Okay, then let's try something else.

I set treeView1.LabelEdit to false, and then do the following:

private void treeView1_MouseClick(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        if (treeView1.SelectedNode == treeView1.GetNodeAt(e.Location))
        {
            treeView1.SelectedNode.Text = "Foo";
            treeView1.LabelEdit = true;
            treeView1.SelectedNode.BeginEdit();
        }
    }
}

And then in AfterLabelEdit, I set LabelEdit back to false.

And guess what? This doesn't work either. It changes the node text to "Foo" but the edit textbox does not appear.

Any ideas? Thanks

Upvotes: 13

Views: 11407

Answers (2)

neo2862
neo2862

Reputation: 1526

Finally I have found a solution to this on CodeProject. Among the comments at the bottom, you will also find a portable solution.

Upvotes: 5

Matt Hamilton
Matt Hamilton

Reputation: 204219

Heh - I struck that one a few years back. I even left a suggestion on Connect (vote for it!) to allow the label to be changed in BeforeLabelEdit.

One option (in WinForms - it's a different story in WPF) is to use custom painting for your TreeNodes so that the actual label is still "Foo" and you custom draw the " (1234)" after it. It's a bit of a pain to get right though.

Upvotes: 4

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