Byte to Item

[Jedhi]

foreach (byte key in keys)
{

listView1.Items.Remove(????);
}

Remove require an Item, how do I go from a key byte to an Item ?

[Norfy]

Hi Jedhi,

if I remember some of your earlier posts correctly, you are storing 'key' as a subitem in a ListViewItem.

In which case it is not a simple case of converting 'key' to ListViewItem.

Maybe the easiest way is to create a Hashtable of 'key' against its containing ListViewItem and then you can use:

listView1.Items.Remove(lookup [key]);

[Jedhi]

Thanks !

Puttet this as a member to my IDictionary Interface.

Object lookup(Object key);

But how do I make lookup understandble for the compiler !

[Norfy]

Not sure what you mean!

What I mean (based on your previous posts):


Hashtable lookup = new Hashtable();

ListViewItem item = new ListViewItem(new string[] {key, value});

lookup.Add(key, item);

listView1.Items.Add(item);

etc.

foreach (byte key in keys)
{
listView1.Items.Remove(lookup[key]);
}

[Jedhi]

I thought that lookup was some fancy word. But I can see now it is the name of the hashtable... LOL.


I've already done as you described, but I get an error CS1502 + CS1503 telling that Argument '1': cannot convert from 'object' to 'System.Windows.Forms.ListViewItem'

The Remove in IDictionary looks like this:
void Remove(Object key);
// should it be void Remove(byte key) instead ???

[Norfy]

It's probably complaining about

listView1.Items.Remove(lookup[key]);

(maybe) it should be:

listView1.Items.Remove((ListViewItem)lookup[key]);