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Keep constant position / Change position with ListView in C#

Posted on 2008-06-18
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Last Modified: 2013-12-16
Hi,

I have a ListView/ListBox (same style) box in C#, and I want to be able to keep a certain item (I can always identify this item, as it is unique) at a constant position, that is, at the bottom of the list.

I am constantly adding items to the list, so if there is a way to change the position in the list I can work something out from there.

Using Visual C# Express.

Thanks.
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Question by:dh-s
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4 Comments
 
LVL 18

Expert Comment

by:Joel Coehoorn
ID: 21812787
You'll have to remove it and re-add it everytime you add another item to the list.
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LVL 3

Assisted Solution

by:BitRunner303
BitRunner303 earned 400 total points
ID: 21812896
As long as you can identify the item, then you can iterate through it's Items collection.  Then in your code handling the adding of items, you could do something like this (there may need to be some tweaking done to this code):

private void AddItem(string NewItem)
{
            decimal foundID = -1;
            foreach (ListViewItem myItem in this.listView1.Items)
            {
                if (myItem.SubItems[0].Text == "My Unique ID")
                {
                    foundID = myItem.Index;
                }
            }
            if (foundID > -1)
            {
                ListViewItem tmpItem = (ListViewItem)(this.listView1.Items[foundID].Clone());
                this.listView1.Items.RemoveAt(foundID);
                this.listView1.Items.Add(NewItem);
                this.listView1.Items.Add(tmpItem);
            }
}
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LVL 10

Accepted Solution

by:
joriszwaenepoel earned 600 total points
ID: 21812920
You can user "ListView.Items.Insert" to add new items at a specific position, instead of using the "Add" method to append an new item at the end of the list.

So, if you always want to insert new items at the first position, and move the other items down, then use somthing like:

ListView1.items.Insert(0, newListViewitem))
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LVL 3

Expert Comment

by:BitRunner303
ID: 21813760
Yep, sorry forgot about that, in this case you'd want to do:

            this.listView1.Items.Insert(this.listView1.Items.Count, new ListViewItem(this.textBox1.Text));

Something like that (or supply your own new ListViewItem).
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