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C# 6.0中引入的新特性，以下是测试过的

1.自动的属性初始化器 Auto Property Initializer

/// 
/// C#6.0 自动属性不需要编写构造器就能添加初始值/// 
public class AutoPropertyInCsharp6{    public int PostID { get; } = 1;    public string PostName { get; } = "Post1";    public string PostTitle { get; protected set; } = string.Empty;    public AutoPropertyInCsharp6()    {        //实验证明，在构造器中PostID已经有了初始值        Console.WriteLine(PostID);    }}

1.1 为访问器添加访问限制

public string FirstName { get; private set; }public string LastName { get; private set; }

/// 
/// 字典类型数据初始化/// 
public class DictionaryInitializerInCSharp6{    /// 
    /// 之前的字典初始化器    /// 
    public Dictionary
   
     List1 = new Dictionary
    
     () {        { "name1","12"},        { "name2","13"},    };    /// 
     
    /// C#6.0 增加的字典初始化器    /// 
    public Dictionary
     
       List2 = new Dictionary
      
       ()    {        ["name1"] = "12",        ["name2"] = "13",    };}
      
     
    
   

//C#6.0 引用静态类的方式using static System.Console;namespace Grammar2._1{    public class StaticUsingInCSharp6    {        public void Test1()        {            WriteLine("Static Using in C# 6");        }    }}

/// 
/// 声明一个异步的方法/// 
public async void CatchTest(){    try    {        int a = Convert.ToInt32("a");        Console.WriteLine(a);    }    catch (Exception ex)    {        await doSomething(ex);    }}private Task doSomething(Exception ex){    return Task.Run(() =>    {        Console.WriteLine("doSomething:" + ex.Message);    });}

/// 
/// try/catch 语句when关键词过滤/// 
public void CacheTest2(){    try    {        int a = Convert.ToInt32("a");        Console.WriteLine(a);    }    catch (Exception ex) when (ex.InnerException == null)    {        Console.WriteLine("ex.InnerException为空");    }}

/// 
/// 用于检查null值得条件访问操作符 ?./// 
public void NullTest1(){    StaticUsingInCSharp6 auto1 = new StaticUsingInCSharp6();    // StaticUsingInCSharp6 auto1 = null;    string str = null;    str = auto1?.Str ?? "空字符串";    Console.WriteLine(str);}public string Str { get; set; } = "abc";

7.字符串插值处理

/// 
/// C# 6.0 字符串插值处理/// 
public class StringInterpolation{    public static string Test1()    {        string first = "san";        string send = "zhang";        string result = $"{send}--{first}";        Console.WriteLine(result);        return result;    }    public static string FirstName { get; set; } = "san";    public static string SendName { get; set; } = "zhang";    public static string FullName  => $"{FirstName}--{SendName}";    public static string GetAll() => $"Name:{FullName},Name2:{StringInterpolation.Test1()}";}

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