Custom Ordering using Custom Comparer

Arulraj Aboorvasamy

11y1.5kCode

This code is to create custom ordering using IComparer Interface. Sorting does ascending or descending but using these codes you can sort w.r.t to the given collection's order.

public class MyComparer : IComparer
{
    ArrayList countries = new ArrayList();
    public MyComparer()
    {
        countries.Add("Australia");
        countries.Add("United States");
        countries.Add("France");
        countries.Add("Canada");
        countries.Add("Germany");
        countries.Add("United Kingdom");
    }
    public int Compare(object x, object y)
    {
        int namX;
        int namY;

        namX = countries.IndexOf(x);
        namY = countries.IndexOf(y);

        if (namX.CompareTo(namY) > 0)
            return 1;
        else if (namX.CompareTo(namY) == -1)
            return -1;
        else
            return 0;
    }
}