Cross-thread operation not valid: Control 'Ctrl' accessed from a thread other than the thread it was created on

I though I would have to redesign part of the application, after all, this seems like a critical error. But if you come across this error, check out this link:

http://www.vcskicks.com/cross-thread.php

Delegates can fix it. The code below will help you (part of this code is from the website above).

private delegate void AddListBoxItemDelegate(object item);

... then copy this code inside your method...
if (this.InvokeRequired)
{
     AddListBoxItemDelegateaddItemDel = new AddListBoxItemDelegate
(AddListBoxItem); //delegate
     object[] parameters = { text }; //parameters
     this.Invoke(addItemDel, parameters); //call
}
else
{
    //code you want to execute
}