ListView unique items

[ultraman]

Is there a fast way to check if there is more than one item with the same key in a ListView ?

 

I'm looking for something faster than having to loop between all items everytime I add a new one.

[PlausiblyDamp]

Could you now use it's .Items.IndexOf to see if it finds an existing match?

[ultraman]

That's the way ! How stupid can I be sometime... :-(

 

Thanks a lot !

[ultraman]

Actually... I tried and it just doesn't work... I also tried the Contains method without anymore success. Here's a piece of code :

 

ListViewItem item1 = new ListViewItem(Serial);
item1.ImageIndex = 0;
item1.SubItems.Add(Serial);
item1.SubItems.Add(GunId);

//Test with IndexOf()
if(lvwBatchItems.Items.IndexOf(item1) > 0)
{
   //Item number already exists
               
}
else
{
   //New item, add it to the list
}


//Test with Contains
if(lvwBatchItems.Items.Contains(item1))
{
   //Item number already exists
               
}
else
{
   //New item, add it to the list
}

 

It's always returning false or -1 depending on the method I use....