Microsoft Graph Excel REST API ASP.NET to-do list sample

This sample shows how to read and write into an Excel document stored in your OneDrive for Business account by using the Excel REST APIs.


This sample requires the following:

Register the application

  1. Determine your ASP.NET app's URL. In Visual Studio's Solution Explorer, select the Microsoft-Graph-ExcelRest-ToDo project. In the Properties window, find the value of SSL URL. Copy this value.
    Application URL

  2. Navigate to the the Azure portal - App registrations to register your app. Login using a Work or School Account.
    New registration Page

  3. Select New registration. On the Register an application page, set the values as follows.

  • Set Name to Microsoft-Graph-ExcelRest-ToDo.
  • Set Supported account types to Accounts in any organizational directory.
  • Leave Redirect URI empty.
  • Choose Register.
    Application Registration
  1. On the Microsoft-Graph-ExcelRest-ToDo page, copy and save the values for the Application (client) ID.
    Application Registration

  2. Select Certificates & secrets under Manage. Select the New client secret button. Enter a value in Description, select any option for Expires and choose Add.
    Certificates & secrets

  3. Copy the client secret value before leaving the page. You will need it in the next step.
    Certificates & secrets

Configure the app

  1. Open Microsoft-Graph-ExcelRest-ToDo.sln file.
  2. In Solution Explorer, open the Web.config file.
  3. Replace ENTER_YOUR_CLIENT_ID with the client ID of your registered Azure application.
  4. Replace ENTER_YOUR_SECRET with the key of your registered Azure application.

Run the app

  1. Press F5 to build and debug. Run the solution and sign in with your organizational account. The application launches on your local host and shows the starter page. Graph and AAD authentication starter page

    Note: Copy and paste the start page URL address http://localhost:21942/home/index to a different browser if you get the following error during sign in: AADSTS70001: Application with identifier ad533dcf-ccad-469a-abed-acd1c8cc0d7d was not found in the directory.

  2. Choose the Click here to sign in button in the middle of the page or the Sign in link at the top right of the page and authenticate with your Office 365 account.
  3. Select the ToDoList link from the top menu bar.
  4. The application checks to see if a file named ToDoList.xlsx exists in the root OneDrive folder of your O365 account. If it doesn't find this file, it uploads a blank ToDoList.xlsx workbook and adds all of the necessary tables, columns, and rows, along with a chart. After finding or uploading and configuring the workbook, the application then displays the task list page. If the workbook contains no tasks, you'll see an empty list.
  5. If you're running the application for the first time, you can verify that the application uploaded and configured the ToDoList.xlsx file by navigating to, clicking on the App Launcher "Waffle" at the top left of the page, and then choosing the OneDrive application. You'll see a file named ToDoList.xlsx in the root directory, and when you click on the file, you'll see worksheets named ToDoList and Summary. The ToDoList worksheet contains a table that lists each "to-do" item, and the Summary worksheet contains a summary table and a chart.
  6. Select the `Add New' link to add a new task. Fill in the form with the task details.
  7. After you add a task, the app shows the updated task listing. If the newly added task isn't updated, choose the Refresh link after a few moments. Updated task listing
  8. Choose the `Charts' link to see the breakdown of tasks in a pie chart that was created and downloaded by using the Excel REST API.

Breakdown of tasks in a pie chart


If you'd like to contribute to this sample, see CONTRIBUTING.MD.

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.

Questions and comments

We'd love to get your feedback about the Microsoft Graph Excel REST API ASP.NET MVC sample. You can send your questions and suggestions to us in the Issues section of this repository.

Questions about Office 365 development in general should be posted to Stack Overflow. Make sure that your questions or comments are tagged with [MicrosoftGraph].

Additional resources

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