Sample to get all attachments on a specific work item (#160)

#147

ClientLibrary/Snippets/Microsoft.TeamServices.Samples.Client/WorkItemTracking/AttachmentsSample.cs

@@ -3,6 +3,7 @@ using Microsoft.TeamFoundation.WorkItemTracking.WebApi.Models;
 using Microsoft.VisualStudio.Services.Common;
 using Microsoft.VisualStudio.Services.WebApi;
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Reflection;
 
@@ -19,6 +20,67 @@ namespace Microsoft.TeamServices.Samples.Client.WorkItemTracking
     public class AttachmentsSample : ClientSample
     {
 
+        [ClientSampleMethod]
+        public void GetAllAttachmentsOnWorkItem()
+        {
+            //this assumes you created a work item first from the WorkItemsSample.cs class
+            //if not, you can manually add a work item id
+            int workitemId = 0;
+            string fileFullPath = Path.GetTempFileName();
+
+            //check to see if the work item id is set in cache
+            try
+            {
+                workitemId = Convert.ToInt32(Context.GetValue<WorkItem>("$newWorkItem1").Id);
+            }
+            catch (Exception)
+            {
+                Console.WriteLine("No work item found in cache. Either create a new work item and attachments or manually set the id for known work item id.");
+                return;
+            }           
+
+            VssConnection connection = Context.Connection;
+            WorkItemTrackingHttpClient workItemTrackingClient = connection.GetClient<WorkItemTrackingHttpClient>();
+
+            WorkItem workitem = workItemTrackingClient.GetWorkItemAsync(workitemId, null, null, WorkItemExpand.Relations, null).Result;
+
+            if (workitem == null)
+            {
+                Console.WriteLine("No work item found for id");
+                return;
+            }
+          
+            Console.WriteLine("Getting attachments on work item");
+
+            if (workitem.Relations == null || workitem.Relations.Count == 0)
+            {
+                Console.WriteLine("No attachments found on work item");
+                return;
+            }
+
+            foreach (var item in workitem.Relations)
+            {
+                if (item.Rel == "AttachedFile")
+                {     
+                    //string manipulation to get the guid off the end of the url                   
+                    string[] splitString = item.Url.ToString().Split('/');                  
+                    Guid attachmentId = new Guid(splitString[7].ToString());
+                                               
+                    Console.WriteLine("Getting attachment name and id: {0}", item.Attributes.GetValueOrDefault("name").ToString());
+
+                    Stream attachmentStream = workItemTrackingClient.GetAttachmentContentAsync(attachmentId).Result;
+
+                    using (FileStream writeStream = new FileStream(fileFullPath, FileMode.Create, FileAccess.ReadWrite))
+                    {
+                        attachmentStream.CopyTo(writeStream);
+                    }
+                }
+            }   
+            
+            return;
+        }
+
+
         [ClientSampleMethod]
         public AttachmentReference UploadTextFile()
         {
@@ -94,5 +156,6 @@ namespace Microsoft.TeamServices.Samples.Client.WorkItemTracking
 
             return true;
         }
+     
     }
 }