How do I get the first visible item in RadListView?

[Yoshinari]

Hi!

How do I get the first visible item in RadListView?
And how do I set it up?
Like the TopItem property of a WinForms ListView.

[Nadya | Tech Support Engineer]

Hello, Yoshinari,

In RadListView, at this moment there is no direct TopItem property like in the standard ListView. However, you can determine the top item by using the GetItemAt method and pass point at the top of visible area:

//Get top item
ListViewDataItem topItem = (this.radListView1.ListViewElement.ViewElement as SimpleListViewElement).GetItemAt(new Point(10,10));
if (topItem != null)
{
   MessageBox.Show($"Top item: {topItem.Text}");
}

If you need to set a top item and make it visible in the view area you can make use of the EnsureItemVisible method and pass the desired item. This ensures that the desired item is scrolled into view and optionally placed at the top.

//Set Top item
ListViewDataItem item = this.radListView1.Items[0];
this.radListView1.ListViewElement.EnsureItemVisible(item);

Can you please give these suggestions a try and let me know how they work for you.

I hope this helps. If you have other questions, please let me know.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Yoshinari]

Hi Nadia,

Thank you, very helpful.
I want to use the “DetailView” style, so I did the following.

ListViewDataItem topItem = (this.radListView1.ListViewElement.ViewElement as DetailListViewElement).GetItemAt(new Point(10, (int)(10 + this.radListView1.HeaderHeight)));

Thank you for your help, I will try to get this to work.

Sincerely,
Yoshinari

[Nadya | Tech Support Engineer]

Hello, Yoshinari,

I am glad that my solution was helpful. Yes, you can customize the solution according to your needs. Feel free to make adjustments when using different views in RadListView.

In case you have any other questions, do not hesitate to contact me.