C#：将字典与列表相交。匹配后返回字典项目

Question

如何安全返回与列表中的项目匹配的字典项目？

static void Test()
{
    var dict = new Dictionary<string, string>();
    dict.Add("license1", "123");
    dict.Add("license2", "456");
    dict.Add("license3", "789");

    var list = new List<string>();
    list.Add("444");
    list.Add("111");
    list.Add("123");

    var result = dict.Values.Intersect(list);
    //result should be only the matching item as a dictionary for dict -> for this example = "license1, 123"
}

Answer 1

因为字典的排列没有帮助，我想我可以这样做：

var h = list.ToHashSet();
var result = dict.Where(kvp => h.Contains(kvp.Value));