.Net Framework各版本新特性

序言

语言版本	发布时间	.NET Framework要求
C# 1.0	2002.1	.NET Framework 1.0
C# 1.1\1.2	2003.4	.NET Framework 1.1
C# 2.0	2005.11	.NET Framework 2.0
C# 3.0	2007.11	.NET Framework 2.0\3.0\3.5
C# 4.0	2010.4	.NET Framework 4.0
C# 5.0	2012.8	.NET Framework 4.5
C# 6.0	2015.7	.NET Framework 4.6
C# 7.0	2017.3	.NET Framework 4.6.2
C# 7.1	2017.6	.NET Framework 4.7
C# 7.2	2017.11	.NET Framework 4.7.1
C# 7.3	2018.5	.NET Framework 4.7.2
C# 8.0	2019.4	.NET Framework 4.8

C# 6.0 (2015)

静态导入
异常筛选器
自动属性初始化表达式
Expression bodied 成员
Null 传播器
字符串内插
nameof 运算符
索引初始值设定项

 

 

字典初始化

 class StudentName 
            { 
                public string FirstName { get; set; } 
                public string LastName { get; set; } 
                public int ID { get; set; } 
            } 
 
            class CollInit 
            { 
                Dictionary<int, StudentName> students = new Dictionary<int, StudentName>() 
                { 
                    { 111, new StudentName {FirstName="Sachin", LastName="Karnik", ID=211}}, 
                    { 112, new StudentName {FirstName="Dina", LastName="Salimzianova", ID=317}}, 
                    { 113, new StudentName {FirstName="Andy", LastName="Ruth", ID=198}} 
                }; 
            }

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