1. 靜態using(static using)
靜態using聲明允許不使用類名直接調用靜態方法。
The static using declaration allows invoking static methods without the classname.In C# 5using System;Console.WriteLine("Hello, World!");In C# 6using static System.Console;WriteLine("Hello, World");2. 表達式方法(Expression-Bodied Methods)
使用表達式方法，只有一條語句的方法可以使用lambda語法寫。
With expression-bodied methods, a method that includes just one statement canbe written with the lambda syntax.In C# 5public bool IsSquare(Rectangle rect){return rect.Height == rect.Width;}In C# 6public bool IsSquare(Rectangle rect) => rect.Height == rect.Width;3. 表達式屬性(Expression-Bodied Properties)
跟表達式方法類似，只有一個get訪問器的單行屬性可以使用lambda語法寫。
Similar to expression-bodied methods, one-line properties with only a get accessorcan be written with the lambda syntaxIn C# 5public string FullName{get{return FirstName +"" + LastName;}}In C# 6public string FullName => FirstName +"" + LastName;4. 自動屬性初始化器(Auto-Implemented Property Intializers)
自動屬性可以使用屬性初始化器初始化。
Auto-implemented properties can be initialized with a property initializer.
In C# 5public class Person{public Person(){Age = 24;}public int Age {get; set;}}In C# 6public class Person{public int Age {get; set;} = 42;}5. 只讀自動屬性(Read-Only Auto Properties)
C# 5需要完整的屬性語法實現只讀屬性，C# 6可以使用自動屬性實現。
To implement read-only properties, C# 5 requires the full property syntax. WithC# 6, you can do this using auto-implemented properties.In C# 5private readonly int _bookId;public BookId{get{return _bookId;}}In C# 6public BookId {get;}6. nameof操作符(nameof Operator)
字段、屬性、方法和類型的name可以通過nameof訪問。使用nameof，可以方便的重構name變化。
With the new nameof operator, names of fields, properties, methods, or types canbe accessed. With this, name changes are not missed with refactoring.In C# 5public void Method(object o){if (o == null) throw new ArgumentNullException("o");In C# 6public void Method(object o){if (o == null) throw new ArgumentNullException(nameof(o));7. Null傳遞操作符(Null Propagation Operator)
Null傳遞操作符簡化了空值檢查。
The null propagation operator simplifies null checks.In C# 5int? age = p == null ? null : p.Age;var handler = Event;if (handler != null){handler(source, e);}In C# 6int? age = p?.Age;handler?.Invoke(source, e);8. 字符串插值(String Interpolation)
字符串差值移除了對string.Format的調用，使用表達式占位符取代數字格式占位符。
The string interpolation removes calls to string.Format. Instead of usingnumbered format placeholders in the string, the placeholders can includeexpressions.In C# 5public override ToString(){return string.Format("{0}, {1}", Title, Publisher);}In C# 6public override ToString() => $"{Title} {Publisher}";9. 字典初始化器(Dictionary Initializers)
字典可以使用類似集合的字典初始化器初始化。
Dictionaries can now be initialized with a dictionary initializer―similar to thecollection initializer.In C# 5var dict = new Dictionary<int, string>();dict.Add(3,"three");dict.Add(7,"seven");In C# 6var dict = new Dictionary<int, string>(){[3] ="three",[7] ="seven"};10. 異常過濾器(Exception Filters)
異常過濾器允許你在捕獲異常前進行過濾。
Exception filters allow you to filter exceptions before catching them.
In C# 5try{//etc.} catch (MyException ex){if (ex.ErrorCode != 405) throw;// etc.}In C# 6try{//etc.} catch (MyException ex) when (ex.ErrorCode == 405){// etc.}11. 在Catch使用Await(Await in Catch)
await可以在catch塊中直接使用，C# 5中需要變通使用。
await can now be used in the catch clause. C# 5 required a workaround.In C# 5bool hasError = false;string errorMessage = null;try{//etc.} catch (MyException ex){hasError = true;errorMessage = ex.Message;} if (hasError){await new MessageDialog().ShowAsync(errorMessage);}In C# 6try{//etc.} catch (MyException ex){await new MessageDialog().ShowAsync(ex.Message);}以上所述是小編給大家介紹的C# 6.0 新特性匯總，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！
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