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Generic List.Sort

I often want to use a list to sort and every time I have to go searching on how to use the IComparer interface.

Assume I have a Person object with the “DisplayName” property that I wish to sort by.

I created the following class:

public class PersonDisplayNameAscendingComparer : IComparer
{

#region IComparer Members

public int Compare(Person x, Person y)
{
return x.DisplayName.CompareTo(y.DisplayName);
}

#endregion
}

And then assuming you have a List called people, you can sort like this;

PersonDisplayNameAscendingComparer personComparer = new PersonDisplayNameAscendingComparer();
people.Sort(personComparer);

Job done.

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Categories: c#
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