How to Sort a List by a property in the object

Question

I have a class called Order which has properties such as OrderId, OrderDate, Quantity, and Total. I have a l

Answer 1

Here is a generic LINQ extension method that does not create an extra copy of the list:

public static void Sort(this List list, Func expression)
    where U : IComparable
{
    list.Sort((x, y) => expression.Invoke(x).CompareTo(expression.Invoke(y)));
}

To use it:

myList.Sort(x=> x.myProperty);

I recently built this additional one which accepts an ICompare, so that you can customize the comparison. This came in handy when I needed to do a Natural string sort:

public static void Sort(this List list, Func expression, IComparer comparer)
    where U : IComparable
{    
    list.Sort((x, y) => comparer.Compare(expression.Invoke(x), expression.Invoke(y)));
}