Question

I have a simple class called Tuple. which looks like this :

class tuple
{
    string name;
    string code
}

i inserted few of these items into a combobox, now when i want to select through the code some item, i try to write

myComboBox.selectedItem = new tuple("Hello" , "5");

and of course it doesn’t work at all and the selected item doesn’t change.

let’s assume the items list of the combobox contains an item that looks like this, how can he compare the items ?

i inherited iComparable and implemented it, but unfortunately he doesn’t use it at all..

how can i set the selected item ? should i run an all the items with a loop and compare them by myself ?

thanks

Answer 1

You’ll need to override the Equals method in order to provide a custom comparison that is able to assert if two tuple instance represent the same value.

You should also check the following MSDN entries about how to properly override the Equals method:

Implementing the Equals Method

Guidelines for Implementing Equals and the Equality Operator (==)

Microsoft Code Analysis Rule about overriding GetHashCode whenever you override Equals:

CA2218: Override GetHashCode on overriding Equals