Create a database (.NET)

Your DocumentDB database can be created by using the CreateDatabaseAsync method of the DocumentClient class. A database is the logical container of JSON document storage partitioned across collections.

using System.Net;
using System.Threading.Tasks;
using Microsoft.Azure.Documents;
using Microsoft.Azure.Documents.Client;

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To create your database:

async Task CreateDatabase(DocumentClient client)
{
    var databaseName = "<your database name>";
    await client.CreateDatabaseAsync(new Database { Id = databaseName });
}

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You can also check if the database already exists and create it if needed:

async Task CreateDatabaseIfNotExists(DocumentClient client)
{
    var databaseName = "<your database name>";
    try
    {
        await client.ReadDatabaseAsync(UriFactory.CreateDatabaseUri(databaseName));
    }
    catch (DocumentClientException e)
    {
        // If the database does not exist, create a new database
        if (e.StatusCode == HttpStatusCode.NotFound)
        {
            await client.CreateDatabaseAsync(new Database { Id = databaseName });                        
        }
        else
        {
            // Rethrow
            throw;
        }
    }
}