检查对象列表是否包含具有特定值的属性 [英] Checking if a list of objects contains a property with a specific value

问题描述

说我有以下代码:

class SampleClass
{
    public int Id {get; set;}
    public int Name {get; set;}
}
List<SampleClass> myList = new List<SampleClass>();
//list is filled with objects
...
string nameToExtract = "test";

所以我的问题是我可以使用什么List函数从myList中仅提取具有与我的nameToExtract字符串匹配的Name属性的对象.

So my question is what List function can I use to extract from myList only the objects that have a Name property that matches my nameToExtract string.

如果这个问题确实很简单/很明显，我先向您道歉.

I apologize in advance if this question is really simple/obvious.

推荐答案

您可以使用返回一个IEnumerable<SampleClass>.假设您想要过滤的List，只需在上面调用.ToList().

Returns an IEnumerable<SampleClass>. Assuming you want a filtered List, simply call .ToList() on the above.

顺便说一句，如果我今天在上面编写代码，鉴于Unicode字符串处理的复杂性，我将以不同的方式进行相等性检查:

By the way, if I were writing the code above today, I'd do the equality check differently, given the complexities of Unicode string handling:

var matches = myList.Where(p => String.Equals(p.Name, nameToExtract, StringComparison.CurrentCulture));

另请参见

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