To delete a Family item, take the following steps:

1. Add the DeleteFamilyItemAsync method after your ReplaceFamilyItemAsync method:

 private async Task DeleteFamilyItemAsync()
        {
            var partitionKeyValue = "Zaal";
            var familyId = "Zaal.1";

            // Delete an item. Note we must provide the partition key value and id of the item to delete
            _ = await this.container.DeleteItemAsync<Family>(familyId, new PartitionKey(partitionKeyValue));
            Console.WriteLine("Deleted Family [{0},{1}]
", partitionKeyValue, familyId);
        }

2. Then, add a call to DeleteFamilyItemAsync in the GetStartedDemoAsync method:

 public async Task GetStartedDemoAsync()
        {
            // Create a new instance of the Cosmos Client
            this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey);
            await this.CreateDatabaseAsync();
            await this.CreateContainerAsync();
            await this.AddItemsToContainerAsync();
            await this.QueryItemsAsync();
            await this.ReplaceFamilyItemAsync();

            //ADD THIS PART TO YOUR CODE
            await this.DeleteFamilyItemAsync();
        }

3. Run the application, and you will see that the item is deleted.

In this demo, we created a Cosmos DB server, database, and container. We also added data to the container, ran a query on the data, updated the data, and lastly, we deleted the data.

In the next section, we are going to cover partitioning schemes.