C#: Getting maximum and minimum values of arbitrary properties of all items in a list

Question

I have a specialized list that holds items of type IThing:

public class ThingList : IList
{...}

public interface IThing
{
    Decimal         


        

Answer 1

Conclusion: There is no better way for .Net 2.0 (with Visual Studio 2005).

You seem to have misunderstood the answers (especially Jon's). You can use option 3 from his answer. If you don't want to use LinqBridge you can still use a delegate and implement the Max method yourself, similar to the method I've posted:

delegate Decimal PropertyValue(IThing thing);

public class ThingList : IList {
    public Decimal Max(PropertyValue prop) {
        Decimal result = Decimal.MinValue;
        foreach (IThing thing in this) {
            result = Math.Max(result, prop(thing));
        }
        return result;
    }
}

Usage:

ThingList lst;
lst.Max(delegate(IThing thing) { return thing.Age; });