How prevent duplicate items listView C#

Question

I am using Windows Forms. With this code I add items to listView from comboBox.

ListViewItem lvi = new ListViewItem();         


        

Answer 1

The ListView class provides a few way to check if an item exists:

• Contains On Items collection, and
• FindItemWithText methods

It can be used like :

// assuming you had a pre-existing item
ListViewItem item = ListView1.FindItemWithText("item_key");
if (item == null)
{
    // item does not exist
}


// you can also use the overloaded method to match subitems
ListViewItem item = ListView1.FindItemWithText("sub_item_text", true, 0);