如何从TFS检索链接​​的“版本控制的项目”

Question

我有使用TFS API检索工作项目及其所有链接工作项目（代码如下）的工作代码（感谢John Socha-Leialoha）。但是，我想要做的是访问链接文件的名称（TFS称它为“Versioned Item”），以供每个工作项目使用。在TFS GUI中，您可以将文件链接到工作项目。说工作项目1234链接到文件foo.txt。现在，当我运行此查询来查找链接项时，该文件不在列表中 - 仅返回其他子WI或父WI。如果我在GUI中完全创建和运行查询，结果是一样的。我怎样才能找出哪些文件链接到给定的WI？我现在唯一的方法是在TFS GUI中查看WI，并在右下角的Files列表中显示。

也许我只是需要做一个正常的平面查询，获取WI领域，不知何故链接文件的名称将是该WI的领域之一？我不需要下载链接的文件，我只需要文件名/位置。

代码返回所有链接的是突，在这里：

public List<string> GetLinkedItems() 
{ 
    //executes a linked item query, returning work items, as well as the items that are link to them. 
    //gets digital asset work item that contains the given part number in the Assoc. Parts field 
    var result = new List<string>(); 
    var tpc = new TfsTeamProjectCollection(new Uri(_tfsUri)); 
    var workItemStore = (WorkItemStore) tpc.GetService(typeof (WorkItemStore)); 
    //and [Schilling.TFS.TechPub.AssocParts] CONTAINS '101-4108' 
    var query = 
     "SELECT [System.Id], [System.Links.LinkType], [System.TeamProject]," + 
     " [System.WorkItemType], [System.Title], [System.AssignedTo]," + 
     " [System.State] FROM WorkItemLinks " + 
     " WHERE ([Source].[System.TeamProject] = 'Tech Pubs' AND " + 
     " [Source].[System.WorkItemType] = 'DigitalAsset' AND " + 
     " [Source].[System.State] <> '') And " + 
     " ([System.Links.LinkType] <> '') And " + 
     " ([Target].[System.WorkItemType] <> '') " + 
     " ORDER BY [System.Id] mode(MayContain)"; 
    var treeQuery = new Query(workItemStore, query); 
    //Note we need to call RunLinkQuery here, not RunQuery, because we are doing a link item type of query 
    var links = treeQuery.RunLinkQuery(); 

    //// Build the list of work items for which we want to retrieve more information// 
    int[] ids = (from WorkItemLinkInfo info in links 
       select info.TargetId).Distinct().ToArray(); 

    // 
    // Next we want to create a new query that will retrieve all the column values from the original query, for 
    // each of the work item IDs returned by the original query. 
    // 
    var detailsWiql = new StringBuilder(); 
    detailsWiql.AppendLine("SELECT"); 
    bool first = true; 

    foreach (FieldDefinition field in treeQuery.DisplayFieldList) 
    { 
     detailsWiql.Append(" "); 
     if (!first) 
      detailsWiql.Append(","); 
     detailsWiql.AppendLine("[" + field.ReferenceName + "]"); 
     first = false; 
    } 
    detailsWiql.AppendLine("FROM WorkItems"); 
    // 
    // Get the work item details 
    // 
    var flatQuery = new Query(workItemStore, detailsWiql.ToString(), ids); 
    WorkItemCollection details = flatQuery.RunQuery(); 

    return 
     (from WorkItem wi in details 
     select wi.Id + ", " + wi.Project.Name + ", " + wi.Title + ", " + wi.State).ToList(); 
} 

Answer 1

工作项查询只能说明WorkItemLinkType链接。要获得其他类型的链接（即源代码管理中的文件），您需要查看WorkItem对象本身中的链接列表。下面是一个代码片段，将让你连接到工作项文件的神器：

TfsTeamProjectCollection tpc = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(
    new Uri("http://<server>:8080/tfs/<collection>")); 

WorkItemStore wiStore = tpc.GetService<WorkItemStore>(); 

VersionControlServer vc = tpc.GetService<VersionControlServer>(); 

WorkItem task = wiStore.GetWorkItem(<work item with a linked file>); 

var externalLinks = task.Links.OfType<ExternalLink>(); 

foreach (var link in externalLinks) 
{ 
    XmlDocument artifact = vc.ArtifactProvider.GetArtifactDocument(new Uri(link.LinkedArtifactUri)); 
} 

XML文档包含使用GetItem()方法来抓住从VersionControlServer正确的文件版本所需的所有必要信息。