Deferred execution in C#

Question

How could I implement my own deferred execution mechanism in C#?

So for instance I have:

string x = DoFoo();

Is it possible to perf

Answer 1

You pretty much describe LINQ in action. A linq query describes how to obtain the data, but data is retrieved (DoFunc is called) only when the query is iterated. Consider if you can change your design to accept IQueryable where you need a string.