Blog that contains articles about new technologies related or not with programming.
I will describe and solves some problems that I encounter in my career.
ASP .NET, AJAX, Javascript, C++, C# and SQL are some of the subjects that will appear.
24 October 2011
don't allow duplicates for a listbox
if (!ContactsListBox.Items.Contains(item)) { ContactsListBox.Items.Add(item); }
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