如何为Generic :: List< T>创建自定义Find方法在C ++ / CLI？

问题描述

我想发布此问题的答案，因为MSDN网络示例只列出了C＃和VB，答案在C ++ / CLI有点不同。

I wanted to post an answer to this question because the MSDN Network Example only lists C# and VB and the answer is a bit different in C++/CLI.

答案是从这篇文章派生的：

This answer is derived from this post: Using "->Find" on a "List" in Visual C++

推荐答案

按照帖子链接的指导 ...

Following the guidance of the post link above...

首先我创建了一个类作为我的Predicate委托：

First I created a class to use as my Predicate delegate:

public value class FindComponentView
{
  String^ Value;

public:

  FindComponentView(String^ value)
  {
    Value = value;
  }
  bool IsMatch(ComponentDrawingData^ compDD)
  {
    return compDD->Identifier->Value == Value;
  }
};

然后我可以像下面这样实现Find（）方法：

I was then able to implement the Find() method like this:

// Note: ComponentDrawingDataList^ derives from System::Collections::Generic::List<T>^

ComponentDrawingDataList^ ddList = GetComponentDrawingDatas(component);
ComponentDrawingData^ componentDrawingData = 
  ddList->Find(gcnew System::Predicate<ComponentDrawingData^>(gcnew FindComponentView("View_1"), &FindComponentView::IsMatch));

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