创建数据库（.NET）

你可以使用 DocumentClient 类的 CreateDatabaseAsync 方法创建 DocumentDB 数据库。数据库是跨集合分区的 JSON 文档存储的逻辑容器。

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

要创建数据库：

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

你还可以检查数据库是否已存在，并在需要时创建它：

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;
        }
    }
}