CODEWITHSUNDEEP
c#winformsobjectlistview
egeo
egeo

Reputation: 323

Select (highlight) node in TreeListView

I am using a TreeListView (ObjectListView) and populated it with a number of items from DB:

class Data
{
    public int ID { get; set; }
    public string Name { get; set; }
    public List<Data> Child;

    public Data(int id, string name)
    {
        ID = id;
        Name = name;
        Child = new List<Data>();
    }
}

How can I select an object (node), scroll tree and expand parent nodes to it (if necessary)? I tried this:

var node = data.SelectMany(x => GetChildren(x)).Where(x => x.ID == 100).FirstOrDefault();
if (node != null)
{                   
    this.tlv.Select();
    this.tlv.SelectObject(node, true);
    <???>
}

For the average WinForms TreeView my code is as follows:

treeView1.SelectedNode = findNodes[j];
findNodes[j].EnsureVisible();
WinAPI.SendMessage(treeView1.Handle, WinAPI.WM_HSCROLL, (IntPtr)WinAPI.SB_LEFT, IntPtr.Zero);

Upvotes: 0

Views: 1274

Answers (1)

Grammarian
Grammarian

Reputation: 6882

ObjectListView has a Reveal() method that does exactly this. From the docs:

Unroll all the ancestors of the given model and make sure it is then visible.

So your code should be simply:

this.tlv.Reveal(node, true);

Upvotes: 3

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