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Microsoft Graph .NET Client Library

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Integrate the Microsoft Graph API into your .NET project!

The Microsoft Graph .NET Client Library targets .NetStandard 2.0.

Installation via NuGet

To install the client library via NuGet:

  • Search for Microsoft.Graph in the NuGet Library, or
  • Type Install-Package Microsoft.Graph into the Package Manager Console.

Getting started

1. Register your application

Register your application to use Microsoft Graph API using the Microsoft Application Registration Portal.

2. Authenticate for the Microsoft Graph service

The Microsoft Graph .NET Client Library supports the use of TokenCredential classes in the Azure.Identity library.

You can read more about available Credential classes here and examples on how to quickly setup TokenCredential instances can be found here.

The recommended library for authenticating against Microsoft Identity (Azure AD) is MSAL.

For an example of authenticating a UWP app using the V2 Authentication Endpoint, see the Microsoft Graph UWP Connect Library.

3. Create a Microsoft Graph client object with an authentication provider

An instance of the GraphServiceClient class handles building requests, sending them to Microsoft Graph API, and processing the responses. To create a new instance of this class, you need to provide an instance of IAuthenticationProvider which can authenticate requests to Microsoft Graph.

For more information on initializing a client instance, see the library overview

4. Make requests to the graph

Once you have completed authentication and have a GraphServiceClient, you can begin to make calls to the service. The requests in the SDK follow the format of the Microsoft Graph API's RESTful syntax.

For example, to retrieve a user's default drive:

var drive = await graphClient.Me.Drive.GetAsync();

GetAsync will return a Drive object on success and throw a ApiException on error.

To get the current user's root folder of their default drive:

// Get the user's driveId
var drive = await graphClient.Me.Drive.GetAsync();
var userDriveId = drive.Id;
// use the driveId to get the root drive
var rootItem = await graphClient.Drives[userDriveId].Root.GetAsync();

GetAsync will return a DriveItem object on success and throw a ApiException on error.

For a general overview of how the SDK is designed, see overview.

The following sample applications are also available:

Documentation and resources

Notes

Upgrading from v1

Between 1.x and 3.x there were some minor possibly breaking changes:

  • .NET Standard minimum version bumped from netStandard1.3 to netstandard2.0
  • .NET Framework minimum version bumped from net45 to net461
  • a change in enum order for GiphyRatingType
  • ParticipantInfo became InvitationParticipantInfo
  • CallRecordRequestBody became CallRecordResponseRequestBody

Upgrading to v4

Between 3.x and 4.x there were some major breaking changes:

  • .NET Standard minimum version bumped from netStandard1.3 to netstandard2.0
  • .NET Framework minimum version bumped from net45 to net462
  • Replacing Newtosoft.Json with System.Text.Json
  • Upgrading Microsoft.Graph.Core dependency to version 2.0.0

View the upgrade guide here.

Upgrading to v5

Between 4.x and 5.x there were several major breaking changes as the SDK now uses Kiota for code generation.

View the upgrade guide here.

Issues

To view or log issues, see issues.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

Other resources

Building library locally

If you are looking to build the library locally for the purposes of contributing code or running tests, you will need to:

  • Have the .NET Core SDK (> 1.0) installed
  • Run dotnet restore from the command line in your package directory
  • Run nuget restore and msbuild from CLI or run Build from Visual Studio to restore Nuget packages and build the project

Due to long file names you may need to run git config --system core.longpaths true before cloning the repo to your system.

Additionally for Windows OS, set the value of the parameter HKLM\SYSTEM\CurrentControlSet\Control\FileSystem LongPathsEnabled to 1, before opening the solution in VS

License

Copyright (c) Microsoft Corporation. All Rights Reserved. Licensed under the MIT license. See Third Party Notices for information on the packages referenced via NuGet.