比较用户的两个列表

Question

我有一个预定义的列表 List words.Say 它有 7 个元素：

List<string> resourceList={"xyz","dfgabr","asxy", "abec","def","geh","mnbj"}

比方说，用户输入“xy+ab”，即他想搜索“xy”或“ab”

string searchword="xy+ ab";

然后我必须在预定义列表中找到所有具有“xy”或“ab”的单词，即所有被“+”分割的单词

因此，输出将具有：

{"xyz","dfgabr","abec",""}

我正在尝试类似的东西：

resourceList.Where(s => s.Name.ToLower().Contains(searchWords.Any().ToString().ToLower())).ToList()

但是，我无法构建 LINQ 查询，因为有 2 个数组，我看到的一种方法是连接 2 个数组，然后尝试；但是由于我的第二个数组只包含第一个数组的一部分，所以我的 LINQ 不起作用。

Answer 1

您需要先将搜索模式与+符号分开，然后您可以轻松找出列表中哪些项目包含您的搜索模式，var&nbsp;result&nbsp;=&nbsp;resourceList.Where(x&nbsp;=>&nbsp;searchword.Split('+').Any(y&nbsp;=>&nbsp;x.Contains(y.Trim()))).ToList();在哪里：你resourceList的是List<string>&nbsp;resourceList&nbsp;=&nbsp;new&nbsp;List<string>&nbsp;{&nbsp;"xyz",&nbsp;"dfgabr",&nbsp;"asxy",&nbsp;"abec",&nbsp;"def",&nbsp;"geh",&nbsp;"mnbj"&nbsp;};搜索模式是，string&nbsp;searchword&nbsp;=&nbsp;"xy+&nbsp;ab";输出：（来自调试器）

Answer 2

尝试以下不需要 Regex ：&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; List<string> resourceList= new List<string>() {"xyz","dfgabr","asxy","abec","def","geh","mnbj"};&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; List<string> searchPattern = new List<string>() {"xy","ab"};&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; List<string> results = resourceList.Where(r => searchPattern.Any(s => r.Contains(s))).ToList();

Answer 3

您可以尝试在Linq的帮助下进行查询：List<string> resourceList = new List<string> {&nbsp; "xyz", "dfgabr", "asxy", "abec", "def", "geh", "mnbj"};string input = "xy+ ab";string[] toFind = input&nbsp; .Split('+')&nbsp; .Select(item => item.Trim()) // we are looking for "ab", not for " ab"&nbsp; .ToArray();// {"xyz", "dfgabr", "asxy", "abec"}string[] result = resourceList&nbsp; .Where(item => toFind&nbsp; &nbsp; &nbsp;.Any(find => item.IndexOf(find) >= 0))&nbsp; .ToArray();&nbsp;// Let's have a look at the arrayConsole.Write(string.Join(", ", result));结果：xyz, dfgabr, asxy, abec如果要忽略大小写，请将StringComparison.OrdinalIgnoreCase参数添加到IndexOfstring[] result = resourceList&nbsp; .Where(item => toFind&nbsp; &nbsp; &nbsp;.Any(find => item.IndexOf(find, StringComparison.OrdinalIgnoreCase) >= 0))&nbsp; .ToArray();