# .NET quickstart for resellers Follow the steps in this quickstart guide, and in about 10 minutes you'll have a simple .NET C# console app that makes requests to the zero-touch enrollment reseller API. ## Prerequisites To run this quickstart, you'll need: - A Google account, that's a member of your zero-touch enrollment reseller account. If you haven't onboarded yet, follow the steps in *Get started* in the [Reseller portal guide](https://developers.google.com/zero-touch/guides/portal). - Visual Studio 2013 or later. - Access to the internet and a web browser. ## Step 1: Turn on the zero-touch enrollment API 1. Use [this wizard](https://console.developers.google.com/start/api?id=androiddeviceprovisioning.googleapis.com) to create or select a project in the Google Developers Console and automatically turn on the API. Click **Continue** , then **Go to credentials**. 2. Set **What data will you be accessing?** to *Application data*. 3. Click **Next**. You should be prompted to create a service account. 4. Give a descriptive name for **Service account name**. 5. Note the **Service account ID** (it looks like an email address) because you'll use it later. 6. Set **Role** to *Service Accounts \> Service Account User*. 7. Click **Done** to finish creating the service account. 8. Click the email address for the service account that you created. 9. Click \*\*Keys\*\*. 10. Click \*\*Add key\*\*, then click \*\*Create new key\*\*. 11. For \*\*Key type\*\*, select \*\*JSON\*\*. 12. Click **Create** and the private key downloads to your computer. 13. Click \*\*Close\*\*. 14. Move the file to your working directory and rename it `service_account_key.json`. > [!WARNING] > **Warning:** Service account keys can become a security risk if not managed carefully. For advice see [best practices for managing API keys](https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys). ## Step 2: Link the service account 1. Open the zero-touch enrollment [portal](https://enterprise.google.com/android/zero-touch/resellers). You might need to sign in. 2. Click **Service accounts**. 3. Click **Link service account**. 4. Set **Email address** to the address of the service account you created. 5. Click **Link service account** to use the service account with your zero-touch enrollment account. ## Step 3: Prepare the project 1. Create a new .NET Core C# *Console Application* project in Visual Studio. 2. Open the Package Manager, select the package source **nuget.org** , and add the following packages: - `Google.Apis.AndroidProvisioningPartner.v1` - `Google.Apis.Auth` To learn more, read the Microsoft document [Install and use a package](https://docs.microsoft.com/en-us/nuget/quickstart/use-a-package). ## Step 4: Set up the sample 1. Drag `service_account_key.json` (downloaded in Step 1) into your Visual Studio Solution Explorer. 2. Select `service_account_key.json`, and then go to the Properties window and set **Copy to output directory** field to *Always copy*. 3. Replace the contents of `Program.cs` with the following code. 4. Insert your own [reseller partner ID](https://developers.google.com/zero-touch/guides/quickstart/dotnet#partner-id) as the value for `PartnerId` (the app's first line). ```c# using Google.Apis.AndroidProvisioningPartner.v1; using Google.Apis.AndroidProvisioningPartner.v1.Data; using Google.Apis.Auth.OAuth2; using Google.Apis.Services; using System; using System.Collections.Generic; using System.IO; namespace ZeroTouchResellerQuickstart { class Program { // TODO: replace this with your partner reseller ID. static long PartnerId = 11036885; // Use a single scope for the all methods in the reseller API. static readonly string[] Scopes = { "https://www.googleapis.com/auth/androidworkprovisioning" }; static string ApplicationName = "Zero-touch Reseller .NET Quickstart"; static void Main(string[] args) { // Create a credential to authorize API requests using a service account key. // The service account must be linked using the zero-touch portal. ServiceAccountCredential credential; using (var stream = new FileStream("service_account_key.json", FileMode.Open, FileAccess.Read)) { credential = GoogleCredential.FromStream(stream) .CreateScoped(Scopes) .UnderlyingCredential as ServiceAccountCredential; } // Create a zero-touch enrollment API service endpoint. var service = new AndroidProvisioningPartnerService(new BaseClientService.Initializer { HttpClientInitializer = credential, ApplicationName = ApplicationName }); // Send an API request to list all our customers. PartnersResource.CustomersResource.ListRequest request = service.Partners.Customers.List(PartnerId); ListCustomersResponse response = request.Execute(); // Print out the details of each customer. IList customers = response.Customers; if (customers != null) { foreach (Company customer in customers) { Console.WriteLine("Name:{0} ID:{1}", customer.CompanyName, customer.CompanyId); } } else { Console.WriteLine("No customers found"); } } } } ``` ### Partner ID API calls typically need your reseller partner ID as an argument. To find your partner ID from the zero-touch enrollment portal, follow the steps below: 1. Open the [portal](https://enterprise.google.com/android/zero-touch/resellers). You might need to sign in. 2. Click **Service accounts**. 3. Copy your partner ID number from the **Your reseller ID** line. ## Step 5: Run the sample To build and run the sample, click **Start** in the Visual Studio toolbar. ## Troubleshooting [Tell us what went wrong]() with the quickstart and we'll work to fix it. To learn how zero-touch uses service accounts to authorize API calls, read [Authorization](https://developers.google.com/zero-touch/guides/auth). ## Learn more - [Google Developers Console help documentation](https://developers.google.com/console/help/new) - [Google API Client Library for .NET documentation](https://developers.google.com/api-client-library/dotnet) - [Using OAuth 2.0 for Server to Server Applications](https://developers.google.com/identity/protocols/OAuth2ServiceAccount)