"dim a ＝ b".这是什么类型的声明?如何在c#中使用它? [英] "Dim a=b". What type of declaration is this? How can it be used in c#?

问题描述

"Dim a=b".

这是什么类型的声明?

"Dim a=b".

What type of declaration is this? How can it be used in c#?

推荐答案

它不能在c#中使用，它是VB代码行. 它所做的是声明一个新变量a并为其分配值b.由于VB的类型不安全，因此它不会影响a或b是什么类型.

C#是类型安全的.您可以找到的最接近的是:

It can''t be used in c#, it is a VB code line.
What it does is declare a new variable a and assign it the value of b. Since VB is not type safe, it doesn''t car what type a or b are.

C# is type safe. The closest you can get to this are:

dynamic a = b;

或

var a=b;

但是首先要使用正确的数据类型声明a更好，这要取决于b 的数据类型. >

But it is much, much better to declare a using the correct datatype in the first place, depending on what the datatype of b could be.:

int a = b;

Button a = b;

Control a = b;

声明并分配a的存储空间.未指定a的数据类型，a用变量b的值初始化(请参见 [ ^ ])，以了解如何将数据类型分配给a(取决于编译器选项).

我不是专家，但我认为最接近的C#陈述是

Declares and allocates storage space for a. Data type of a is not specified, a is initialized with the value of the variable b (see the documentation at MSDN, "Default Data Types and Values" section[^]) for understanding how a datatype is assigned to a (it depends on compiler options).

I''m not an expert, but I think the closest C# statement is

var a = b;

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