To sort using ArrayList.Sort() 

Quoted from http://www.codeproject.com/useritems/sortingarraylist.asp

public struct MyStrcuture
{
public Int32 iID;
public String sName;
}
In order to be able to sort elements contained in an ArrayList, we have to define the CompareTo method of the IComparable interface, and then use the ArrayList's .Sort() method. This -of course- means that our structure should be inherited from that interface .. and so we'll do! 
public struct MyStrcuture : IComparable
{
public Int32 iID;
public String sName;

public Int32 CompareTo(Object obj)
{
  MyStrcuture tmpObj = (MyStrcuture) obj;
  return (this.sName.CompareTo(tmpObj.sName));
}
}

This would allow the array list to be sorted by just calling MyArrayList.Sort()
provided the arraylist containing the item with the above structure.


Useful sorting algorithms in C#. URL

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