Build a .NET Core console app to manage data in Azure Cosmos DB SQL API account (SDK Version 3 Preview)

• Learn More About Azure Cosmos DB Today

Welcome to the Azure Cosmos DB SQL API getting started with .NET Core tutorial! After following this tutorial, you'll have a .NET Core console application that creates and queries Azure Cosmos DB resources. This tutorial uses Version 3.0+ of the Azure Cosmos DB .NET SDK, which targets .NET Standard 2.0.

This tutorial covers:

Don't have time create the application? Don't worry! The complete solution is available on GitHub. Jump to the Get the complete solution section for quick instructions.

Want to build a Xamarin iOS, Android, or Forms application using the SQL API and .NET Core SDK? See Build mobile applications with Xamarin and Azure Cosmos DB.

Prerequisites

• An active Azure account. If you don't have one, you can sign up for a free account.

  You can Try Azure Cosmos DB for free without an Azure subscription, free of charge and commitments. Or, you can use the Azure Cosmos DB Emulator with a URI of https://localhost:8081. The Primary Key is provided in Authenticating requests.

• If you don’t already have Visual Studio 2017 installed, you can download and use the free Visual Studio 2017 Community Edition. If you are developing a Universal Windows Platform (UWP) app, you should use Visual Studio 2017 with version 15.4 or higher. Make sure that you enable the Azure development workload during the Visual Studio setup.

  • If you're working on MacOS or Linux, you can develop .NET Core apps from the command line by installing the .NET Core SDK for the platform of your choice.

  • If you're working on Windows, you can develop .NET Core apps from the command line by installing the .NET Core SDK.

  • You can use your own editor, or download Visual Studio Code, which is free and works on Windows, Linux, and MacOS.

Step 1: Create an Azure Cosmos DB account

Let's create an Azure Cosmos DB account. If you already have an account you want to use, you can skip ahead to Setup your Visual Studio Solution. If you are using the Azure Cosmos DB Emulator, follow the steps at Azure Cosmos DB Emulator to setup the emulator and skip ahead to Setup your Visual Studio project.

1. In a new browser window, sign in to the Azure portal.

2. Select Create a resource > Databases > Azure Cosmos DB.

   

3. On the Create Azure Cosmos DB Account page, enter the basic settings for the new Azure Cosmos DB account.

   Setting	Value	Description
   Subscription	Your subscription	Select the Azure subscription that you want to use for this Azure Cosmos DB account.
   Resource Group	Create new Then enter the same unique name as provided in ID	Select Create new. Then enter a new resource-group name for your account. For simplicity, use the same name as your ID.
   Account Name	Enter a unique name	Enter a unique name to identify your Azure Cosmos DB account. Because documents.azure.com is appended to the ID that you provide to create your URI, use a unique ID. The ID can only contain lowercase letters, numbers, and the hyphen (-) character. It must be between 3 and 31 characters in length.
   API	Core(SQL)	The API determines the type of account to create. Azure Cosmos DB provides five APIs: Core(SQL) for document databases, Gremlin for graph databases, MongoDB for document databases, Azure Table, and Cassandra. Currently, you must create a separate account for each API. Select Core(SQL) because in this article you create a document database and query by using SQL syntax. Learn more about the SQL API.
   Location	Select the region closest to your users	Select a geographic location to host your Azure Cosmos DB account. Use the location that's closest to your users to give them the fastest access to the data.

   Select Review+Create. You can skip the Network and Tags section.

   

4. The account creation takes a few minutes. Wait for the portal to display the Congratulations! Your Azure Cosmos DB account was created page.

   

Step 2: Setup your Visual Studio project

1. Open Visual Studio 2017 on your computer.
2. On the File menu, select New, and then choose Project.
3. In the New Project dialog, select Visual C# / Console App (.NET Core), name your project, and then click OK.

   

4. In the Solution Explorer, right click on your new console application, which is under your Visual Studio solution, and then click Manage NuGet Packages...

   

5. In the NuGet tab, click Browse, and type Microsoft.Azure.Cosmos in the search box.

6. Within the results, find Microsoft.Azure.Cosmos and click Install. The package ID for the Azure Cosmos DB SQL API Client Library is Microsoft Azure Cosmos DB Client Library.

   

   If you get a message about reviewing changes to the solution, click OK. If you get a message about license acceptance, click I accept.

Great! Now that we finished the setup, let's start writing some code. You can find a completed code project of this tutorial at GitHub.

Step 3: Connect to an Azure Cosmos DB account

1. First, replace the references at the beginning of your C# application, in the Program.cs file with these references:

   using System;
   using System.Threading.Tasks;
   using Microsoft.Azure.Cosmos;
   using System.Collections.Generic;
   using System.Net;

2. Now, add these constants and variables into your public class Program.

   public class Program
   {
       // ADD THIS PART TO YOUR CODE
   
       // The Azure Cosmos DB endpoint for running this sample.
       private static readonly string EndpointUri = "<your endpoint here>";
       // The primary key for the Azure Cosmos account.
       private static readonly string PrimaryKey = "<your primary key>";
   
       // The Cosmos client instance
       private CosmosClient cosmosClient;
   
       // The database we will create
       private CosmosDatabase database;
   
       // The container we will create.
       private CosmosContainer container;
   
       // The name of the database and container we will create
       private string databaseId = "FamilyDatabase";
       private string containerId = "FamilyContainer";
   }

   Note, if you are familiar with the previous version of the .NET SDK, you may be used to seeing the terms 'collection' and 'document.' Because Azure Cosmos DB supports multiple API models, version 3.0+ of the .NET SDK uses the generic terms 'container' and 'item.' A container can be a collection, graph, or table. An item can be a document, edge/vertex, or row, and is the content inside a container. Learn more about databases, containers, and items.

3. Retrieve your endpoint URL and primary key from the Azure portal.

   In the Azure portal, navigate to your Azure Cosmos DB account, and then click Keys.

   Copy the URI from the portal and paste it into <your endpoint URL> in the Program.cs file. Copy the PRIMARY KEY from the portal and paste it into <your primary key>.

   

4. Next, we'll create a new instance of CosmosClient and set up some scaffolding for our program.

   Below the Main method, add a new asynchronous task called GetStartedDemoAsync, which will instantiate our new CosmosClient. We will use GetStartedDemoAsync as the entry point that calls methods that operate on Azure Cosmos DB resources.

   public static async Task Main(string[] args)
   {
   }
   
   // ADD THIS PART TO YOUR CODE
   /*
       Entry point to call methods that operate on Azure Cosmos DB resources in this sample
   */
   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
   }

5. Add the following code to run the GetStartedDemoAsync asynchronous task from your Main method. The Main method will catch exceptions and write them to the console.

   public static async Task Main(string[] args)
   {
       // ADD THIS PART TO YOUR CODE
       try
       {
           Console.WriteLine("Beginning operations...\n");
           Program p = new Program();
           await p.GetStartedDemoAsync();
       }
       catch (CosmosException de)
       {
           Exception baseException = de.GetBaseException();
           Console.WriteLine("{0} error occurred: {1}\n", de.StatusCode, de);
       }
       catch (Exception e)
       {
           Console.WriteLine("Error: {0}\n", e);
       }
       finally
       {
           Console.WriteLine("End of demo, press any key to exit.");
           Console.ReadKey();
       }
   }

6. Select F5 to run your application. The console window output displays the message "End of demo, press any key to exit." confirming that the connection to Azure Cosmos DB was made. You can then close the console window.

Congratulations! You have successfully connected to an Azure Cosmos DB account.

Step 4: Create a database

A database can be created by using either the CreateDatabaseIfNotExistsAsync or CreateDatabaseAsync function of the Databases class. A database is the logical container of items partitioned across containers.

1. Copy and paste the CreateDatabase method below your GetStartedDemoAsync method. CreateDatabase will create a new database with id FamilyDatabase if it does not already exist, with the id specified from the databaseId field.

   /*
       Create the database if it does not exist
   */
   private async Task CreateDatabase()
   {
       // Create a new database
       this.database = await this.cosmosClient.Databases.CreateDatabaseIfNotExistsAsync(databaseId);
       Console.WriteLine("Created Database: {0}\n", this.database.Id);
   }

2. Copy and paste the code below where you instantiated the CosmosClient to call the CreateDatabase method you just added.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
   
       //ADD THIS PART TO YOUR CODE
       await this.CreateDatabase();
   }

   At this point, your code should now look like this, with your endpoint and primary key filled in. Note your namespace will differ based on the name of your project.

   using System;
   using System.Threading.Tasks;
   using Microsoft.Azure.Cosmos;
   using System.Collections.Generic;
   using System.Net;
   
   namespace CosmosGettingStartedDotnetCoreTutorial
   {
       class Program
       {
           // The Azure Cosmos DB endpoint for running this sample.
           private static readonly string EndpointUri = "<your endpoint here>";
           // The primary key for the Azure Cosmos account.
           private static readonly string PrimaryKey = "<your primary key>";
   
           // The Cosmos client instance
           private CosmosClient cosmosClient;
   
           // The database we will create
           private CosmosDatabase database;
   
           // The container we will create.
           private CosmosContainer container;
   
           // The name of the database and container we will create
           private string databaseId = "FamilyDatabase";
           private string containerId = "FamilyContainer";
   
           public static async Task Main(string[] args)
           {
               try
               {
                   Console.WriteLine("Beginning operations...");
                   Program p = new Program();
                   await p.GetStartedDemoAsync();
               }
               catch (CosmosException de)
               {
                   Exception baseException = de.GetBaseException();
                   Console.WriteLine("{0} error occurred: {1}\n", de.StatusCode, de);
               }
               catch (Exception e)
               {
                   Console.WriteLine("Error: {0}\n", e);
               }
               finally
               {
                   Console.WriteLine("End of demo, press any key to exit.");
                   Console.ReadKey();
               }
           }
   
           /*
               Entry point to call methods that operate on Azure Cosmos DB resources in this sample
           */
           public async Task GetStartedDemoAsync()
           {
               // Create a new instance of the Cosmos Client
               this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
               await this.CreateDatabase();
           }
   
           /*
               Create the database if it does not exist
           */
           private async Task CreateDatabase()
           {
               // Create a new database
               this.database = await this.cosmosClient.Databases.CreateDatabaseIfNotExistsAsync(databaseId);
               Console.WriteLine("Created Database: {0}\n", this.database.Id);
           }
       }
   }

Select F5 to run your application.

Congratulations! You have successfully created an Azure Cosmos DB database.

Step 5: Create a container

A container can be created by using either the CreateContainerIfNotExistsAsync or CreateContainerAsync function in the Containers class. A container consists of items (which in the case of the SQL API is JSON documents) and associated JavaScript server-side application logic, e.g. stored procedures, user-defined functions, and triggers.

1. Copy and paste the CreateContainer method below your CreateDatabase method. CreateContainer will create a new container with id FamilyContainer if it does not already exist, with the id specified from the containerId field.

   /*
       Create the container if it does not exist.
       Specifiy "/LastName" as the partition key since we're storing family information, to ensure good distribution of requests and storage.
   */
   private async Task CreateContainer()
   {
       // Create a new container
       this.container = await this.database.Containers.CreateContainerIfNotExistsAsync(containerId, "/LastName");
       Console.WriteLine("Created Container: {0}\n", this.container.Id);
   }

2. Copy and paste the code below where you instantiated the CosmosClient to call the CreateContainer method you just added.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
   
       //ADD THIS PART TO YOUR CODE
       await this.CreateContainer();
   }

Select F5 to run your application.

Congratulations! You have successfully created an Azure Cosmos DB container.

Step 6: Add items to the container

An item can be created by using the CreateItemAsync function of the Items class. When using the SQL API, items are projected as documents, which are user-defined (arbitrary) JSON content. You can now insert an item into your Azure Cosmos DB container.

First, we need to create a Family class that will represent objects stored within Azure Cosmos DB in this sample. We will also create Parent, Child, Pet, Address subclasses that are used within Family. Note that documents must have an Id property serialized as id in JSON.

1. Select Ctrl+Shift+A to open the Add New Item dialog. Add a new class Family.cs to your project.

   

2. Copy and paste the Family, Parent, Child, Pet, and Address class into Family.cs. Note your namespace will differ based on the name of your project.

   using Newtonsoft.Json;
   
   namespace CosmosGettingStartedDotnetCoreTutorial
   {
       public class Family
       {
           [JsonProperty(PropertyName = "id")]
           public string Id { get; set; }
           public string LastName { get; set; }
           public Parent[] Parents { get; set; }
           public Child[] Children { get; set; }
           public Address Address { get; set; }
           public bool IsRegistered { get; set; }
           public override string ToString()
           {
               return JsonConvert.SerializeObject(this);
           }
       }
   
       public class Parent
       {
           public string FamilyName { get; set; }
           public string FirstName { get; set; }
       }
   
       public class Child
       {
           public string FamilyName { get; set; }
           public string FirstName { get; set; }
           public string Gender { get; set; }
           public int Grade { get; set; }
           public Pet[] Pets { get; set; }
       }
   
       public class Pet
       {
           public string GivenName { get; set; }
       }
   
       public class Address
       {
           public string State { get; set; }
           public string County { get; set; }
           public string City { get; set; }
       }
   }

3. Navigate back to Program.cs and add the AddItemsToContainer method under your CreateContainer method. The code checks to make sure an item with the same id does not already exist before creating it. We will insert two items, one each for the Andersen Family and the Wakefield Family.

   /*
       Add Family items to the container
   */
   private async Task AddItemsToContainer()
   {
       // Create a family object for the Andersen family
       Family andersenFamily = new Family
       {
           Id = "Andersen.1",
           LastName = "Andersen",
           Parents = new Parent[]
           {
               new Parent { FirstName = "Thomas" },
               new Parent { FirstName = "Mary Kay" }
           },
           Children = new Child[]
           {
               new Child
               {
                   FirstName = "Henriette Thaulow",
                   Gender = "female",
                   Grade = 5,
                   Pets = new Pet[]
                   {
                       new Pet { GivenName = "Fluffy" }
                   }
               }
           },
           Address = new Address { State = "WA", County = "King", City = "Seattle" },
           IsRegistered = true
       };
   
       // Read the item to see if it exists. Note ReadItemAsync will not throw an exception if an item does not exist. Instead, we check the StatusCode property off the response object.
       CosmosItemResponse<Family> andersenFamilyResponse = await this.container.Items.ReadItemAsync<Family>(andersenFamily.LastName, andersenFamily.Id);
   
       if (andersenFamilyResponse.StatusCode == HttpStatusCode.NotFound)
       {
           // Create an item in the container representing the Andersen family. Note we provide the value of the partition key for this item, which is "Andersen"
           andersenFamilyResponse = await this.container.Items.CreateItemAsync<Family>(andersenFamily.LastName, andersenFamily);
   
           // Note that after creating the item, we can access the body of the item with the Resource property off the CosmosItemResponse.
           //We can also access the RequestCharge property to see the amount of RUs consumed on this request.
           Console.WriteLine("Created item in database with id: {0} Operation consumed {1} RUs.\n", andersenFamilyResponse.Resource.Id, andersenFamilyResponse.RequestCharge);
       }
       else
       {
           Console.WriteLine("Item in database with id: {0} already exists\n", andersenFamilyResponse.Resource.Id);
       }
   
       // Create a family object for the Wakefield family
       Family wakefieldFamily = new Family
       {
           Id = "Wakefield.7",
           LastName = "Wakefield",
           Parents = new Parent[]
           {
               new Parent { FamilyName = "Wakefield", FirstName = "Robin" },
               new Parent { FamilyName = "Miller", FirstName = "Ben" }
           },
           Children = new Child[]
           {
               new Child
               {
                   FamilyName = "Merriam",
                   FirstName = "Jesse",
                   Gender = "female",
                   Grade = 8,
                   Pets = new Pet[]
                   {
                       new Pet { GivenName = "Goofy" },
                       new Pet { GivenName = "Shadow" }
                   }
               },
               new Child
               {
                   FamilyName = "Miller",
                   FirstName = "Lisa",
                   Gender = "female",
                   Grade = 1
               }
           },
           Address = new Address { State = "NY", County = "Manhattan", City = "NY" },
           IsRegistered = false
       };
   
       // Read the item to see if it exists
       CosmosItemResponse<Family> wakefieldFamilyResponse = await this.container.Items.ReadItemAsync<Family>(wakefieldFamily.LastName, wakefieldFamily.Id);
   
       if (wakefieldFamilyResponse.StatusCode == HttpStatusCode.NotFound)
       {
           // Create an item in the container representing the Wakefield family. Note we provide the value of the partition key for this item, which is "Wakefield"
           wakefieldFamilyResponse = await this.container.Items.CreateItemAsync<Family>(wakefieldFamily.LastName, wakefieldFamily);
   
           // Note that after creating the item, we can access the body of the item with the Resource property off the CosmosItemResponse.
           //We can also access the RequestCharge property to see the amount of RUs consumed on this request.
           Console.WriteLine("Created item in database with id: {0} Operation consumed {1} RUs.\n", wakefieldFamilyResponse.Resource.Id, wakefieldFamilyResponse.RequestCharge);
       }
       else
       {
           Console.WriteLine("Item in database with id: {0} already exists\n", wakefieldFamilyResponse.Resource.Id);
       }
   }
   

4. Add a call to AddItemsToContainer in the GetStartedDemoAsync method.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
       await this.CreateContainer();
   
       //ADD THIS PART TO YOUR CODE
       await this.AddItemsToContainer();
   }

Select F5 to run your application.

Congratulations! You have successfully created two Azure Cosmos DB items.

Step 7: Query Azure Cosmos DB resources

Azure Cosmos DB supports rich queries against JSON documents stored in each collection. The following sample code shows how to run a query against the items we inserted in the previous step.

1. Copy and paste the RunQuery method below your AddItemsToContainer method.

   /*
       Run a query (using Azure Cosmos DB SQL syntax) against the container
   */
   private async Task RunQuery()
   {
       var sqlQueryText = "SELECT * FROM c WHERE c.LastName = 'Andersen'";
       var partitionKeyValue = "Andersen";
   
       Console.WriteLine("Running query: {0}\n", sqlQueryText);
   
       CosmosSqlQueryDefinition queryDefinition = new CosmosSqlQueryDefinition(sqlQueryText);
       CosmosResultSetIterator<Family> queryResultSetIterator = this.container.Items.CreateItemQuery<Family>(queryDefinition, partitionKeyValue);
   
       List<Family> families = new List<Family>();
   
       while (queryResultSetIterator.HasMoreResults)
       {
           CosmosQueryResponse<Family> currentResultSet = await queryResultSetIterator.FetchNextSetAsync();
           foreach (Family family in currentResultSet)
           {
               families.Add(family);
               Console.WriteLine("\tRead {0}\n", family);
           }
       }
   }

2. Add a call to RunQuery in the GetStartedDemoAsync method.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
       await this.CreateContainer();
       await this.AddItemsToContainer();
   
       //ADD THIS PART TO YOUR CODE
       await this.RunQuery();
   }

Select F5 to run your application.

Congratulations! You have successfully queried against an Azure Cosmos DB container.

Step 8: Replace a JSON item

Now, we will update an item in Azure Cosmos DB.

1. Copy and paste the ReplaceFamilyItem method below your RunQuery method. Note we are changing the IsRegistered property of the Family and the Grade of one of the children.

   /*
   Update an item in the container
   */
   private async Task ReplaceFamilyItem()
   {
       CosmosItemResponse<Family> wakefieldFamilyResponse = await this.container.Items.ReadItemAsync<Family>("Wakefield", "Wakefield.7");
       var itemBody = wakefieldFamilyResponse.Resource;
   
       // update registration status from false to true
       itemBody.IsRegistered = true;
       // update grade of child
       itemBody.Children[0].Grade = 6;
   
       // replace the item with the updated content
       wakefieldFamilyResponse = await this.container.Items.ReplaceItemAsync<Family>(itemBody.LastName, itemBody.Id, itemBody);
       Console.WriteLine("Updated Family [{0},{1}]\n. Body is now: {2}\n", itemBody.LastName, itemBody.Id, wakefieldFamilyResponse.Resource);
   }

2. Add a call to ReplaceFamilyItem in the GetStartedDemo method.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
       await this.CreateContainer();
       await this.AddItemsToContainer();
       await this.RunQuery();
   
       //ADD THIS PART TO YOUR CODE
       await this.ReplaceFamilyItem();
   }

Select F5 to run your application.

Congratulations! You have successfully replaced an Azure Cosmos DB item.

Step 9: Delete item

Now, we will delete an item in Azure Cosmos DB.

1. Copy and paste the DeleteFamilyItem method below your ReplaceFamilyItem method.

   /*
   Delete an item in the container
   */
   private async Task DeleteFamilyItem()
   {
       var partitionKeyValue = "Wakefield";
       var familyId = "Wakefield.7";
   
       // Delete an item. Note we must provide the partition key value and id of the item to delete
       CosmosItemResponse<Family> wakefieldFamilyResponse = await this.container.Items.DeleteItemAsync<Family>(partitionKeyValue, familyId);
       Console.WriteLine("Deleted Family [{0},{1}]\n", partitionKeyValue, familyId);
   }

2. Add a call to DeleteFamilyItem in the GetStartedDemo method.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
       await this.CreateContainer();
       await this.AddItemsToContainer();
       await this.RunQuery();
       await this.ReplaceFamilyItem();
   
       //ADD THIS PART TO YOUR CODE
       await this.DeleteFamilyItem();
   }

Select F5 to run your application.

Congratulations! You have successfully deleted an Azure Cosmos DB item.

Step 10: Delete the database

Now we will delete our database. Deleting the created database will remove the database and all children resources (containers, items, and any stored procedures, user-defined functions, and triggers). We will also dispose of the CosmosClient instance.

1. Copy and paste the DeleteDatabaseAndCleanup method below your DeleteFamilyItem method.

   /*
   Delete the database and dispose of the Cosmos Client instance
   */
   private async Task DeleteDatabaseAndCleanup()
   {
       CosmosDatabaseResponse databaseResourceResponse = await this.database.DeleteAsync();
       // Also valid: await this.cosmosClient.Databases["FamilyDatabase"].DeleteAsync();
   
       Console.WriteLine("Deleted Database: {0}\n", this.databaseId);
   
       //Dispose of CosmosClient
       this.cosmosClient.Dispose();
   }

2. Add a call to DeleteDatabaseAndCleanup in the GetStartedDemo method.

   public async Task GetStartedDemoAsync()
   {
       // Create a new instance of the Cosmos Client
       this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
       await this.CreateDatabase();
       await this.CreateContainer();
       await this.AddItemsToContainer();
       await this.RunQuery();
       await this.ReplaceFamilyItem();
       await this.DeleteFamilyItem();
   
       //ADD THIS PART TO YOUR CODE
       await this.DeleteDatabaseAndCleanup();
   }

Select F5 to run your application.

Congratulations! You have successfully deleted an Azure Cosmos DB database.

Step 11: Run your C# console application all together!

Select F5 in Visual Studio to build the application in debug mode.

You should see the output of your entire get started app in a console window. The output will show the results of the queries we added and should match the example text below.

Beginning operations...

Created Database: FamilyDatabase

Created Container: FamilyContainer

Created item in database with id: Andersen.1 Operation consumed 11.43 RUs.

Created item in database with id: Wakefield.7 Operation consumed 14.29 RUs.

Running query: SELECT * FROM c WHERE c.LastName = 'Andersen'

        Read {"id":"Andersen.1","LastName":"Andersen","Parents":[{"FamilyName":null,"FirstName":"Thomas"},{"FamilyName":null,"FirstName":"Mary Kay"}],"Children":[{"FamilyName":null,"FirstName":"Henriette Thaulow","Gender":"female","Grade":5,"Pets":[{"GivenName":"Fluffy"}]}],"Address":{"State":"WA","County":"King","City":"Seattle"},"IsRegistered":false}

Updated Family [Wakefield,Wakefield.7].
        Body is now: {"id":"Wakefield.7","LastName":"Wakefield","Parents":[{"FamilyName":"Wakefield","FirstName":"Robin"},{"FamilyName":"Miller","FirstName":"Ben"}],"Children":[{"FamilyName":"Merriam","FirstName":"Jesse","Gender":"female","Grade":6,"Pets":[{"GivenName":"Goofy"},{"GivenName":"Shadow"}]},{"FamilyName":"Miller","FirstName":"Lisa","Gender":"female","Grade":1,"Pets":null}],"Address":{"State":"NY","County":"Manhattan","City":"NY"},"IsRegistered":true}

Deleted Family [Wakefield,Wakefield.7]

Deleted Database: FamilyDatabase

End of demo, press any key to exit.

Congratulations! You've completed the tutorial and have a working C# console application!

Get the complete tutorial solution

To build the GetStarted solution that contains all the samples in this article, you will need the following:

• An active Azure account. If you don't have one, you can sign up for a free account.
• An Azure Cosmos DB account.
• The GetStarted solution available on GitHub.

To restore the references to the SQL API for Azure Cosmos DB .NET Core SDK in Visual Studio, right-click the GetStarted solution in Solution Explorer, and then select Restore NuGet Packages. Next, in the Program.cs file, update the EndpointUri and PrimaryKey values as described in Connect to an Azure Cosmos DB account.

Next steps

In this tutorial, you've learned how to build a .NET Core app to manage Azure Cosmos DB SQL API data. You can now import additional data to your Azure Cosmos DB account.