可C＃编译器编译一个VB.Net code？ [英] Can C# compiler compile a VB.Net code?

问题描述

我发现下面的一个ASP.NET的书。我正在学习和好奇，下面的内容。

I found following on a ASP.NET book. I am learning and curious about following content.

将IL架构的第二个主要优点是，它使该框架是语言中性的。在很大程度上，语言的选择不再是由无语言对另一而是通过他们的$ P $开发商或担pferences的能力所决定的。您甚至可以混合的语言在一个单一的应用程序。用C＃编写一个类可以从VB2005类中派生，并抛出一个C＃方法面包车异常陷入一个VB @ 005的方法。

The second major advantage of an IL architecture is that it enables the Framework to be language neutral. To a large degree, language choice is no longer dictated by the capabilities of none language over another but rather by their preferences of the developer or the tam. You can even mix language in a single applications. A class written in C# can be derived from a VB2005 class, and an exception thrown in a C# method van be caught in a VB@005 method.

我的问题是，ASP.NET使用相同的编译器来编译VB.net和C＃？

My question is , does ASP.NET use same compiler to compile VB.net and C#?

更新：（另一个查询）

CAN C＃编译器编译一个VB.Net code？

Can C# compiler compile a VB.Net code ?

推荐答案

他们有独立的编译器（csc.exe的C＃和VBC.EXE为VB.Net），但它们都被编译成IL，然后在运行时JIT它编译成机器code。

They have separate compilers (csc.exe for C# and vbc.exe for VB.Net) but they both get compiled into IL and then at run-time JIT compiles it into machine code.

问题1：可以C＃编译器编译VB.net code？

Question 1 : can C# compiler compile VB.net code?

答1：不，不可能，你会看到，在下面的例子。如果你尝试这样做，因为它看起来对C＃语法它给出了一个错误。

Answer 1: No it can't and you will see that in the below example. It gives an error if you try to do that as it looks for C# syntax.

问题2：我想这就是他们在书中说。既然是两个编译器，我觉得它是不兼容的。

Question 2: I think that's what they say in the book. Since it is two compilers, I feel it is not compatible

答2：这并不是说，你可以使用C＃编写VB code，但它说，你可以像我一样，在下面的例子中，仍然能够编译C＃和VB混合语言在一个单一的应用程序（用他们的编译器）。

Answer 2: It doesn't say that you can compile VB code using C# but it says that you can mix languages in a single application like I did in the example below and still able to compile C# and VB (using their compilers).

请参阅下面的例子来理解它是如何工作的。我创建了一个C＃项目与C＃类和VB项目与VB类的解决方案。你不应该将C＃和VB类相同的项目，因为它会忽略构建过程中的VB文件，如果它是一个C＃项目。

See below example to understand how it works. I created a solution with a C# project with a C# class and a VB project with a VB class. You should not mix C# and VB classes in same project as it will ignore the vb file if its a C# project during build.

ClassCSharp.cs的内容：

Content of ClassCSharp.cs:

namespace ClassLibraryCSharp
{
    public abstract class ClassCSharp
    {
        public int MyProperty { get; set; }

        protected abstract void Test();
    }
}

ClassVBInCSharp.vb在C＃ClassLibrary

内容。看我怎么可以从C＃类继承，并访问其属性和覆盖的方法。

Content of ClassVBInCSharp.vb in C# ClassLibrary. See how I can inherit from a C# class and also access its properties and override the method.

Namespace ClassLibraryVB
    Public Class ClassVBInCSharp
        Inherits ClassCSharp
        Property Test2 As Integer

        Protected Overrides Sub Test()
            Test2 = MyBase.MyProperty
        End Sub
    End Class
End Namespace

请参阅下面的命令，我跑：

See below commands I ran:

vbc.exe /reference:"ClassLibraryCSharp.dll" /target:library /out:"ClassLibraryCSharpVbVersion.dll" "ClassVBInCSharp.vb"
Microsoft (R) Visual Basic Compiler version 12.0.20806.33440
Copyright (c) Microsoft Corporation.  All rights reserved.

请参阅上面的VB编译器来编译VB类。

See above VB Compiler is used to compile vb class.

csc.exe /reference:"ClassLibraryCSharp.dll" /target:library /out:"ClassLibraryCSharpVersion.dll" "ClassVBInCSharp.vb"
Microsoft (R) Visual C# Compiler version 4.0.30319.33440 for Microsoft (R) .NET Framework 4.5
Copyright (C) Microsoft Corporation. All rights reserved.

ClassLibrary1\ClassVBInCSharp.vb(1,1): error CS
0116: A namespace cannot directly contain members such as fields or methods

见上面，如果我尝试使用C＃编译器，它抛出一个错误，因为它寻找C＃语法编写VB类。

See above if I try to use C# Compiler to compile vb class it throws an error as its looking for C# syntax.

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