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OneDriveApiBrowser Dependency updates Nov 9, 2016
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OneDrive API Browser Sample

The OneDriveAPIBrowser sample is a Windows Forms app sample that uses the OneDrive SDK for C#. In this sample, users can browse files and folders that are stored on OneDrive, and view metadata.

Set up

  1. Install Visual Studio and all available updates, if you don't already have it.
  2. Download the OneDriveAPIBrowser sample from GitHub or create your own fork of the repository.
  3. From Visual Studio, open the OneDriveApiBrowser.sln solution.
  4. Go to the OneDriveApiBrowser project in the solution and view the code for FormBrowser.cs.
  5. Update your OneDrive for Business and/or OneDrive Consumer application details in the following variables at the top of the file:
        private const string AadClientId = "Insert your AAD client ID here";
        private const string AadReturnUrl = "Insert your AAD return URL here";

        private const string MsaClientId = "Insert your MSA client ID here";

For more details on setting up an application to access OneDrive Consumer or OneDrive for Business please read the registration documentation for the API.

Run the sample

In Visual Studio, select the sample OneDriveAPIBrowser from the Startup project list, and then press F5 or click Start to run the sample. The sample looks like this:

OneDriveAPIBrowser sample

to OneDrive Consumer

When the OneDrive API Browser app opens, choose File | Sign in to MSA to sign in to a personal OneDrive account. Once you have signed in to your Microsoft account, a dialog will appear, asking for permissions to access OneDrive files.

Let this app access your info

Click Yes.

to OneDrive for Business

When the OneDrive API Browser app opens, choose File | Sign in to AAD to sign in to a business OneDrive account. Once you have signed in to your Azure Active Directory account, a dialog will appear, asking for the permissions configured for the application ID in the Azure Active Directory portal.

Click Yes.

After sign-in

Your OneDrive items will appear on the left pane, with each item represented by a thumbnail. On the right pane, the selected item's properties are displayed. You can choose how the item properties are displayed, whether its JSON or Tree View.

To upload a file, choose Upload from the menu and then choose Simple - Path-based to upload by path, or Simple - ID-based to upload by item id.

To download a file, select a file, and then choose Download from the menu.

The Picker menu opens up the signed-in user's OneDrive from a web browser.

API features

Retrieving an authenticated client

This sample gets a OneDrive Consumer IOneDriveClient instance using GetMicrosoftAccountClient. It gets a OneDrive for Business IOneDriveClient instance using BusinessClientExtensions.GetActiveDirectoryClient. After retrieving a client instance the app calls AuthenticateAsync to sign the user in.

private IOneDriveClient oneDriveClient { get; set; }
private static readonly string[] Scopes = { "onedrive.readwrite", "wl.offline_access", "wl.signin" };
private async Task SignIn(ClientType clientType) 
     if (this.oneDriveClient == null) 
         this.oneDriveClient = clientType == ClientType.Consumer
             ? OneDriveClient.GetMicrosoftAccountClient(
                 webAuthenticationUi: new FormsWebAuthenticationUi())
             : BusinessClientExtensions.GetActiveDirectoryClient(FormBrowser.AadClientId, FormBrowser.AadReturnUrl);

         if (!this.oneDriveClient.IsAuthenticated) 
             await this.oneDriveClient.AuthenticateAsync(); 

The OneDrive SDK also provides a SignOutAsync method to easily sign the user out:

await this.oneDriveClient.SignOutAsync();

Get item properties

This sample demonstrates how to get an item's properties, by calling the GetAsync method of the OneDriveClient object:

folder = await this.oneDriveClient.Drive.Root.Request().Expand(expandValue).GetAsync();

Simple item upload

This sample makes use of the OneDrive API's ability to upload items by path or by id. Here, you upload an item by path:

// Specify the folder path of the item to upload.
string folderPath = targetFolder.ParentReference == null 
 ? "/drive/items/root:" 
 : targetFolder.ParentReference.Path + "/" + Uri.EscapeUriString(targetFolder.Name); 
var uploadPath = folderPath + "/" + Uri.EscapeUriString(System.IO.Path.GetFileName(filename)); 

// Use the OneDrive SDK to upload the item by path.
var uploadedItem = await 

This example shows how to upload an item by id:

var uploadedItem = await 

More resources

You can continue to explore this sample and the rest of its features by using GitHub or Visual Studio. The OneDrive SDK for CSharp/.NET is documented here. To view a Windows Universal app sample that uses the OneDrive SDK for CSharp/.NET, see OneDrivePhotoBrowser. Make sure to also check out the OneDrive API's official documentation at



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