FillMemory.cs

using System;
using System.Collections.Generic;
static class Program {
    static int Run() {
        for (int i = int.MaxValue; ; i -= 1024*1024)
        {
            try
            {
        		var s = new String('\0', i);
            }
            catch(OutOfMemoryException)
            {
                
            }
        }
        return 0;
    }
}