C# - 添加到现有（生成的）构造函数

发布于 2024-08-31 00:24:10 字数 526 浏览 4 评论 0原文

我有一个位于生成代码中的构造函数。我不想更改生成的代码（因为重新生成时它会被覆盖），但我需要向构造函数添加一些功能。

这是一些示例代码：

// Generated file
public partial class MyGeneratedClass
{
   public MyGeneratedClass() 
   {
      Does some generated stuff
   }
}

我能想到的唯一解决方案是：

// My hand made file
public partial class MyGeneratedClass
{
   public MyGeneratedClass(bool useOtherConstructor):this()
   {
      do my added functinallity
   }
}

我相当确定这会起作用，但是我的构造函数有一个蹩脚的未使用参数，我必须全部更改。有更好的办法吗？如果没有也没关系，但我想我会问。

原文

I have a constructor that is in generated code. I don't want to change the generated code (cause it would get overwritten when I regenerate), but I need to add some functionality to the constructor.

Here is some example code:

// Generated file
public partial class MyGeneratedClass
{
   public MyGeneratedClass() 
   {
      Does some generated stuff
   }
}

The only solution I can come up with is this:

// My hand made file
public partial class MyGeneratedClass
{
   public MyGeneratedClass(bool useOtherConstructor):this()
   {
      do my added functinallity
   }
}

I am fairly sure this will work, but I then have a lame unused param to my constructors and I have to go change them all. Is there a better way? If not that is fine, but I thought I would ask.

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╰ゝ天使的微笑 2024-09-07 00:24:10

如果您使用的是 C# 3 并且可以更改生成器，则可以使用 部分方法：

// MyGeneratedClass.Generated.cs
public partial class MyGeneratedClass
{
   public MyGeneratedClass() 
   {
      // Does some generated stuff
      OnConstructorEnd();
   }

   partial void OnConstructorEnd();
}

// MyGeneratedClass.cs
public partial class MyGeneratedClass
{
   partial void OnConstructorEnd()
   {
      // Do stuff here
   }
}

If you're using C# 3 and can change the generator, you can use partial methods:

// MyGeneratedClass.Generated.cs
public partial class MyGeneratedClass
{
   public MyGeneratedClass() 
   {
      // Does some generated stuff
      OnConstructorEnd();
   }

   partial void OnConstructorEnd();
}

// MyGeneratedClass.cs
public partial class MyGeneratedClass
{
   partial void OnConstructorEnd()
   {
      // Do stuff here
   }
}

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