Check if mongodb database exists?

Question

Is there a possibility to check if a mongo database allready exists?

Answer 1

I'd like to add a C# version. I'm using the MongoDB.Driver 2.2.2.

static bool DatabaseExists(string connectionString)
{
    var mongoUri = new MongoUrl(connectionString);
    var client = new MongoClient(mongoUri);

    var dbList = Enumerate(client.ListDatabases()).Select(db => db.GetValue("name").AsString);
    return dbList.Contains(mongoUri.DatabaseName);
}

static IEnumerable Enumerate(IAsyncCursor docs)
{
    while (docs.MoveNext())
    {
        foreach (var item in docs.Current)
        {
            yield return item;
        }
    }
}