c# - 根据不等于的条件加入两个列表

Question

简而言之...

我有一个源代码管理文件夹列表，这些文件夹是使用 TFS API 从变更集中收集的，结构如下:

$/ProjectFolder/BranchName/Project A

$/ProjectFolder/BranchName/Subfolder/Project B

$/ProjectFolder/BranchName/Project C

上面只会包含一些选定的项目，然后我会以以下格式列出所有项目名称:

Project A

Project B

Project C

Project D

我试图选择一个在两个列表之间有连接的新列表，然后得到一个包含第一个结构和第二个结构的匿名类型。我想我应该使用 Contains 之类的东西，但是当尝试使用连接时，语法只提供 equals。

我试过:

var sourceFolders = new List<string>()
{ 
  "$/ProjectFolder/BranchName/Project A",
  "$/ProjectFolder/BranchName/Sub-Folder/Project B",
  "$/ProjectFolder/BranchName/Project C"
};
var projectNames = new List<string>() { "Project A", "Project B", "Project C", "Project D"};
var filteredProjects = sourceFolders.Where(sourceFolder => projectNames.Any(x => sourceFolder.Contains(x)));

filteredProjects 将只包含 sourceFolders 而不是它也映射了哪个 project...

有什么想法吗？

期望的输出

new { SourceFolder = "$/ProjectFolder/BranchName/Project A", ProjectName  = "Project A" };
new { SourceFolder = "$/ProjectFolder/BranchName/Subfolder/Project B", ProjectName  = "Project B" };
new { SourceFolder = "$/ProjectFolder/BranchName/Project C", ProjectName  = "Project C" };

Answer 1

或者你可以这样做:

var filteredProjects = from source in sourceFolders
                       let project = projectNames.FirstOrDefault(p => source.Contains(p))
                       where project != null
                       select new {
                           SourceFolder = source,
                           Project = project
                       };