C#List< string>包含来自另一个List< string>的部分匹配 [英] C# List<string> contains partial match from another List<string>

问题描述

我有这些列表:

var list1 = new List<string>
{
    "BOM_Add",
    "BOM_Edit",
    "BOM_Delete",
    "Paper_Add",
    "Paper_Edit",
    "Paper_Delete"
};

var list2 = new List<string> {"BOM", "Paper_Add"};

我想基于部分匹配来创建常见项目的第三个列表.因此，第三个列表应包含:

I want to create a third list of the common items based on a partial match. So, the third list should contain:

"BOM_Add",
"BOM_Edit",
"BOM_Delete",
"Paper_Add"

因为第二个列表包含"BOM".

because the second list contains "BOM".

如果第二个列表包含"_Edit"，那么我希望第三个列表具有

If the second list contained "_Edit", then I would expect the third list to have

"BOM_Edit",
"Paper_Edit"

如果我在第二个列表中拼出每一项(例如"BOM_Add")，我都知道如何使用.Intersect()来做到这一点，但是我需要比这更灵活.

I know how to do this with .Intersect() if I spell out each item (e.g. "BOM_Add") in the second list, but I need it to be more flexible than that.

是否可以在不迭代第一个列表中的每个项目的情况下完成此操作?这些列表可能会很长，如果可以的话，我宁愿避免这种情况.

Can this be done without iterating through each item on the first list? These lists may get very long and I would prefer to avoid that if I can.

推荐答案

您可以使用LINQ

var result = list1.Where(r => list2.Any(t => r.Contains(t)))
                  .ToList();

对于输出:

foreach (var item in result)
{
    Console.WriteLine(item);
}

输出为:

BOM_Add
BOM_Edit
BOM_Delete
Paper_Add

可以做到这一点而无需遍历第一个项目中的每个项目 列表吗?

Can this be done without iterating through each item on the first list?

您必须通过循环或使用LINQ (内部也进行迭代)进行迭代

You have to iterate, either through a loop or using LINQ (which internally iterates as well)

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