New functions and applications of c#4.0 language (1)

1. Anonymous type (can be used to encapsulate a set of read-only properties into a single object without having to explicitly define a type first)

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varv = new { Amount = 108, Message = "Hello"};Console.WriteLine(v.Amount);Console.WriteLine(v.Message);

2. Automatic attributes (use automatic attributes no longer create local variables and accessors as in the past, you can simplify the code)

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publi C class book {      public string bookname { get ; set ;}      public string IBSN { get set ;}

3, anonymous delegate (do not create a new method to create a delegate)

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List<string> list = new List<string>(new string[] { "str1", "str2" });string fstr = list.Find(    delegate(string str)    {        return str == "str1";     });

3. Lambda expression (simplifies the way anonymous delegates are written)

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List<string> list = newList<string>(new string[] { "str1", "str2" });stringfstr = list.Find(str => str == "str1");

New functions and applications of c#4.0 language (1)