Prevent double entries in ListView using C#?

Question

How can we access the items added to a ListView?

The thing I have to do is: add an item to the list view. I want to check if the item to add to the listview is alrea

Answer 1

Just add your items and make sure you assign a name. Then just use the ContainsKey method of the Items collection to determine if it's there, like this.

for (int i = 0; i < 20; i++)
{
    ListViewItem item = new ListViewItem("Item" + i.ToString("00"));
    item.Name = "Item"+ i.ToString("00");
    listView1.Items.Add(item);
}
MessageBox.Show(listView1.Items.ContainsKey("Item00").ToString()); // True
MessageBox.Show(listView1.Items.ContainsKey("Item20").ToString()); // False