I'm attempting to write a player inventory for my games, and so far I can add and remove items by slot row# and column# ( basically an X/Y grid ). So far so good. But I need to be able to give the user a list of all the items he is holding, in alphabetical order, like so:

Apple x5

Dull Hairpin x1 

Orange x2

Shining Sword x1 

etc.

I have a method that does just that ( iInventory.List() ), but problems arise when trying to add new items and then list them again.

So far I have gotten 3 System.ExecutionEngineException and a System.OutOfMemoryException and a "Error: Attempting to write to locked memory. This may indicate corrupted memory elsewhere." message. I rebooted after that one, but I still got the other 2. What's going on?

The program should tell you how to use itself, but if you can't figure out how to do something, just ask. 

Do you have a set of add/remove/list that causes this. I crashed once but I was just playing around and now no matter what I can't get it to do it.

I got the ExecutionEngineException

Yes, I use StringList.Add( item.Name ) to add them to the list, but I don't use remove because the StringList is only used inside method List(). Basically I add all of the inventory contents to the list. Next I sort the list. Lastly I cycle through and count the contents of the list, generate a string that reads "{Item name} x{# of times item appears in list}", ex

'Dull Hairpin' x3 

And then write the string to the console. 

Because the list is generated inside the method, I don't use Remove(). 

I just noticed that I only get an error when the program messes up. Like so:

Add 5 Shining Swords ([space])

Press Home to list, it should say "Shining Sword x5".

add something else named "Your Item", using PageUp.

When I list the items again, it would say

'Shining Sword' x4

'Your Item' x1 

and then crash. =/ 

 The method is at line 431, take a look and tell me if it's a coding mistake.