TFS二次开发系列：五、工作项查询_项目管理_非技术区_程序员俱乐部

　　本节将讲述如何查询工作项，用于二次开发中定义获取工作项列表。

　　使用WorkItemStore.Query方法进行查询工作项，其使用的语法和SQL语法类似：

Select [标题]

from workitems

where [工作项类型]='任务' and [指派给] = 'administrator'

order by [标题]

　　我们通过多个步骤来学习，一、我们连接TFS服务：

            //TFSURI
            Uri tfsUri = new Uri("http://pc-20130113jkun:8080/tfs");
            TfsTeamProjectCollection projectCollection = new TfsTeamProjectCollection(tfsUri);
            WorkItemStore workItemStore = (WorkItemStore)projectCollection.GetService(typeof(WorkItemStore));

　　二、基本查询

            //基本查询
            WorkItemCollection queryResults = workItemStore.Query(@"
                Select  [标题] 
                From WorkItems
                Where [工作项类型] = 'Bug' ");
            foreach (WorkItem item in queryResults)
            {
                Console.WriteLine(" 工作项名称："+item.Title+" 工作项描述："+item.Description);
            }

　　三、多条件查询和排序

           Console.WriteLine("--------------------------多条件查询和排序-------------------------");
            //多条件查询和排序
            WorkItemCollection itemcollection = workItemStore.Query(@"Select [标题] from workitems 
                where [工作项类型]='任务' and [指派给] = 'administrator' order by [标题] ");
            foreach (WorkItem item in itemcollection)
            {
                Console.WriteLine(" 工作项名称：" + item.Title + " 工作项描述：" + item.Description);
            }

　　四、查询结果数量

            Console.WriteLine("--------------------------查询结果数量-------------------------");
            //查询结果数量
            string queryString = @" Select  [标题] From WorkItems Where [工作项类型] = 'Bug'";
            Query query = new Query(workItemStore,queryString); 
            int numWorkItems = query.RunCountQuery();
            Console.WriteLine("工作项数量 " + numWorkItems + " user stories.");

　　五、异步查询

            Console.WriteLine("--------------------------异步查询-------------------------");
            //异步查询
            ICancelableAsyncResult callback = query.BeginQuery();
            callback.AsyncWaitHandle.WaitOne(50, false);
            WorkItemCollection result = query.EndQuery(callback);
            foreach (WorkItem item in result)
            {
                Console.WriteLine(" 工作项名称：" + item.Title + " 工作项描述：" + item.Description);
            }

　　所有本文的代码皆在下面。

            //TFSURI
            Uri tfsUri = new Uri("http://pc-20130113jkun:8080/tfs");
            TfsTeamProjectCollection projectCollection = new TfsTeamProjectCollection(tfsUri);
            WorkItemStore workItemStore = (WorkItemStore)projectCollection.GetService(typeof(WorkItemStore));
            Console.WriteLine("--------------------------基本查询-------------------------");
            //基本查询
            WorkItemCollection queryResults = workItemStore.Query(@"
                Select  [标题] 
                From WorkItems
                Where [工作项类型] = 'Bug' ");
            foreach (WorkItem item in queryResults)
            {
                Console.WriteLine(" 工作项名称："+item.Title+" 工作项描述："+item.Description);
            }

            Console.WriteLine("--------------------------多条件查询和排序-------------------------");
            //多条件查询和排序
            WorkItemCollection itemcollection = workItemStore.Query(@"Select [标题] from workitems 
                where [工作项类型]='任务' and [指派给] = 'administrator' order by [标题] ");
            foreach (WorkItem item in itemcollection)
            {
                Console.WriteLine(" 工作项名称：" + item.Title + " 工作项描述：" + item.Description);
            }

            Console.WriteLine("--------------------------查询结果数量-------------------------");
            //查询结果数量
            string queryString = @" Select  [标题] From WorkItems Where [工作项类型] = 'Bug'";
            Query query = new Query(workItemStore,queryString); 
            int numWorkItems = query.RunCountQuery();
            Console.WriteLine("工作项数量 " + numWorkItems + " user stories.");

            Console.WriteLine("--------------------------异步查询-------------------------");
            //异步查询
            ICancelableAsyncResult callback = query.BeginQuery();
            callback.AsyncWaitHandle.WaitOne(50, false);
            WorkItemCollection result = query.EndQuery(callback);
            foreach (WorkItem item in result)
            {
                Console.WriteLine(" 工作项名称：" + item.Title + " 工作项描述：" + item.Description);
            }

            Console.ReadLine();