Expression Trees C# – The complete sample

Expression Trees C# – The complete sample

In theory Expression Trees data type will use memory efficiently. I am still finding a practical use of this.

It is fun anyway. Create a C# console project and paste the below code and it will work fine. 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Linq.Expressions;
namespace ConAppExpTree
  class Program
    static void Main(string[] args)
      Func<int, int> del = x => x + 1; // Code
      Expression<Func<int, int>> exp = x => x + 1; // Data
      Func<int, int> del2 = exp.Compile();

      int i1 = del(1);
      int i2 = del2(2);
      Console.WriteLine(“{0}”, i2);

Book: The C# Programming Language Fourth Edition, Anders Hejlsberg

About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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