列出Foreach参数化的委托 [英] List Foreach parameterized delegate

问题描述

我试图为列表的每个成员调用一个函数，但将其他参数传递给委托.

I am trying to invoke a function for every member of a list, but pass additional parameters to the delegate.

如果我有一个名为 documents

List<string> documents = GetAllDocuments();

现在，我需要遍历文档并为每个条目调用一个方法.我可以使用类似

Now I need to iterate over the documents and call a method for every entry. I can do it using something like

documents.ForEach(CallAnotherFunction);

这将要求 CallAnotherFunction 具有类似

public void CallAnotherFunction(string value)
{
    //do something
}

但是，我需要在 CallAnotherFunction 中调用另一个参数，例如 content ，该参数取决于调用列表.

However, I need another parameter in CallAnotherFunction called, say content, that is dependent on the calling list.

所以，我的理想定义是

public void CallAnotherFunction(string value, string content)
{
    //do something
}

我想将内容作为ForEach通话的一部分传递

And I would like to pass content as part of the ForEach call

List<string> documents = GetAllDocuments();
documents.ForEach(CallAnotherFunction <<pass content>>);

List<string> templates = GetAllTemplates();
templates.ForEach(CallAnotherFunction <<pass another content>>);

是否有一种无需定义不同功能或使用迭代器即可实现的方法?

Is there a way I can achieve this without having to define different functions, or use iterators?

推荐答案

使用lambda表达式代替方法组:

Use lambda expressions instead of method groups:

List<string> documents = GetAllDocuments();
documents.ForEach( d => CallAnotherFunction(d, "some content") );

List<string> templates = GetAllTemplates();
templates.ForEach( t => CallAnotherFunction(t, "other content") );

这篇关于列出Foreach参数化的委托的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！