VB.NET 的表达式体成员？答案

【问题标题】：Expression-bodied members for VB.NET?VB.NET 的表达式体成员？
【发布时间】：2016-06-13 12:58:08
【问题描述】：

VB.NET 支持表达式体成员吗？到目前为止，它似乎在 c# 中拥有一切，如空条件、nameof、插值字符串、只能通过 ctor 访问的无实体自动属性等。

在c#中，语法是：

string FullName => FirstName + " " + LastName;

如何在 VB.NET 中实现这一点？

【问题讨论】：

标签： vb.net properties

【解决方案1】：

不，VB 14 目前不支持它们，只有 C# 6。

根据 roslyn Github Wiki Languages features in C# 6 and VB 14 上的表格：

+---------------------------------------------------------------+--------+--------+
|                            Feature                            |  C# 6  |  VB 14 |
+---------------------------------------------------------------+--------+--------+
| Auto-property initializers                                    | Added  | Exists |
| Read-only auto-properties                                     | Added  | Added  |
| Ctor assignment to getter-only autoprops                      | Added  | Added  |
| Static imports                                                | Added  | Exists |
| Index initializer                                             | Added  | No     |
| Await in catch/finally                                        | Added  | No     |
| Exception filters                                             | Added  | Exists |
| Partial modules                                               | N/A    | Added  |
| Partial interfaces                                            | Exists | Added  |
| Multiline string literals                                     | Exists | Added  |
| Year-first date literals                                      | N/A    | Added  |
| Comments after implicit line continuation                     | N/A    | Added  |
| TypeOf ... IsNot ...                                          | N/A    | Added  |
| Expression-bodied members                                     | Added  | No     |
| Null-conditional operators                                    | Added  | Added  |
| String interpolation                                          | Added  | Added  |
| nameof operator                                               | Added  | Added  |
| #pragma                                                       | Added  | Added  |
| Smart name resolution                                         | N/A    | Added  |
| Read-write props can implement read-only interface properties | Exists | Added  |
| #Region inside methods                                        | Exists | Added  |
| Overloads inferred from Overrides                             | N/A    | Added  |
| CObj in attributes                                            | Exists | Added  |
| CRef and parameter name                                       | Exists | Added  |
| Extension Add in collection initializers                      | Added  | Exists |
| Improved overload resolution                                  | Added  | N/A    |
+---------------------------------------------------------------+--------+--------+

【讨论】：

真可惜。似乎他们可以很容易地实现它。那好吧。什么是额外的 4 行代码
@oscilatingcretin 400% 在这种情况下 ;)
C#刚出来的时候我就试过了，但是太缺乏了我放弃了。在过去一年左右的时间里，我又回到了它，它终于足够强大，甚至比 VB 有足够的额外功能，当我不得不回去处理旧的 VB 项目时，我发现自己缺少 C#。叹息