C#-Clientbibliotheksbeispiele

Azure DevOps Services | Azure DevOps Server 2022 | Azure DevOps Server 2019

In den folgenden Beispielen wird gezeigt, wie Sie Azure DevOps mithilfe der .NET-Clientbibliotheken erweitern und integrieren.

Beispiele in GitHub

Auf der .NET-Beispiel-GitHub-Seite finden Sie viele Beispiele mit Anweisungen zur Ausführung.

Weitere Beispiele

REST-Beispiele auf dieser Seite erfordern die folgenden NuGet-Pakete:

• Microsoft.TeamFoundationServer.Client
• Microsoft.VisualStudio.Services.Client
• Microsoft.VisualStudio.Services.InteractiveClient

Beispiel: Verwenden eines REST-basierten HTTP-Clients

// https://www.nuget.org/packages/Microsoft.TeamFoundationServer.Client/
using Microsoft.TeamFoundation.WorkItemTracking.WebApi;
using Microsoft.TeamFoundation.WorkItemTracking.WebApi.Models;

// https://www.nuget.org/packages/Microsoft.VisualStudio.Services.InteractiveClient/
using Microsoft.VisualStudio.Services.Client;

// https://www.nuget.org/packages/Microsoft.VisualStudio.Services.Client/
using Microsoft.VisualStudio.Services.Common; 

/// <summary>
/// This sample creates a new work item query for New Bugs, stores it under 'MyQueries', runs the query, and then sends the results to the console.
/// </summary>
public static void SampleREST()
{
    // Connection object could be created once per application and we use it to get httpclient objects. 
    // Httpclients have been reused between callers and threads.
    // Their lifetime has been managed by connection (we don't have to dispose them).
    // This is more robust then newing up httpclient objects directly.  
    
    // Be sure to send in the full collection uri, i.e. http://myserver:8080/tfs/defaultcollection
    // We are using default VssCredentials which uses NTLM against an Azure DevOps Server.  See additional provided
    // Create a connection with PAT for authentication
    VssConnection connection = new VssConnection(orgUrl, new VssBasicCredential(string.Empty, personalAccessToken));


    // Create instance of WorkItemTrackingHttpClient using VssConnection
    WorkItemTrackingHttpClient witClient = connection.GetClient<WorkItemTrackingHttpClient>();

    // Get 2 levels of query hierarchy items
    List<QueryHierarchyItem> queryHierarchyItems = witClient.GetQueriesAsync(teamProjectName, depth: 2).Result;

    // Search for 'My Queries' folder
    QueryHierarchyItem myQueriesFolder = queryHierarchyItems.FirstOrDefault(qhi => qhi.Name.Equals("My Queries"));
    if (myQueriesFolder != null)
    {
        string queryName = "REST Sample";

        // See if our 'REST Sample' query already exists under 'My Queries' folder.
        QueryHierarchyItem newBugsQuery = null;
        if (myQueriesFolder.Children != null)
        {
            newBugsQuery = myQueriesFolder.Children.FirstOrDefault(qhi => qhi.Name.Equals(queryName));
        }
        if (newBugsQuery == null)
        {
            // if the 'REST Sample' query does not exist, create it.
            newBugsQuery = new QueryHierarchyItem()
            {
                Name = queryName,
                Wiql = "SELECT [System.Id],[System.WorkItemType],[System.Title],[System.AssignedTo],[System.State],[System.Tags] FROM WorkItems WHERE [System.TeamProject] = @project AND [System.WorkItemType] = 'Bug' AND [System.State] = 'New'",
                IsFolder = false
            };
            newBugsQuery = witClient.CreateQueryAsync(newBugsQuery, teamProjectName, myQueriesFolder.Name).Result;
        }

        // run the 'REST Sample' query
        WorkItemQueryResult result = witClient.QueryByIdAsync(newBugsQuery.Id).Result;

        if (result.WorkItems.Any())
        {
            int skip = 0;
            const int batchSize = 100;
            IEnumerable<WorkItemReference> workItemRefs;
            do
            {
                workItemRefs = result.WorkItems.Skip(skip).Take(batchSize);
                if (workItemRefs.Any())
                {
                    // get details for each work item in the batch
                    List<WorkItem> workItems = witClient.GetWorkItemsAsync(workItemRefs.Select(wir => wir.Id)).Result;
                    foreach (WorkItem workItem in workItems)
                    {
                        // write work item to console
                        Console.WriteLine("{0} {1}", workItem.Id, workItem.Fields["System.Title"]);
                    }
                }
                skip += batchSize;
            }
            while (workItemRefs.Count() == batchSize);
        }
        else
        {
            Console.WriteLine("No work items were returned from query.");
        }
    }
}

Authentifizierung

Um die Authentifizierungsmethode für Azure DevOps zu ändern, ändern Sie den VssCredential-Typ, der beim Erstellen an VssConnection übergeben wurde.

Authentifizierung des persönlichen Zugriffstokens für REST-Dienste

public static void PersonalAccessTokenRestSample()
{
    // Create instance of VssConnection using Personal Access Token
    VssConnection connection = new VssConnection(orgUrl, new VssBasicCredential(string.Empty, personalAccessToken));
}

Visual Studio-Anmeldeaufforderung (Nur Microsoft-Konto oder Microsoft Entra-Back-End) für REST-Dienste (.NET Framework)

Da die .NET Core-Version keine interaktiven Dialogfelder unterstützt, gilt dieses Beispiel nur für die .NET Framework-Version der Clients.

public static void MicrosoftAccountRestSample()
{
    // Create instance of VssConnection using Visual Studio sign-in prompt
    VssConnection connection = new VssConnection(new Uri(collectionUri), new VssClientCredentials());
}

Microsoft Entra-Authentifizierung für REST-Dienste

public static void AADRestSample()
{
    // Create instance of VssConnection using Azure AD Credentials for Azure AD backed account
    VssConnection connection = new VssConnection(new Uri(collectionUri), new VssAadCredential(userName, password));
}

OAuth-Authentifizierung für REST-Dienste

Weitere Informationen finden Sie unter Azure DevOps-Authentifizierungsbeispiele und Microsoft Identity Platform und OAuth 2.0-Autorisierungscodefluss.

public static void OAuthSample()
{
    // Create instance of VssConnection using OAuth Access token
    VssConnection connection = new VssConnection(new Uri(collectionUri), new VssOAuthAccessTokenCredential(accessToken));
}