//These three are from microsoft.azure.cosmos
//You can download them using nuget
CosmosClient cosmosClient = new CosmosClient(Uri, PrimaryKey);
Database database = cosmosClient.GetDatabase(DatabaseId);
Container container = database.GetContainer(ContainerId);

string sqlQueryText = "SELECT * FROM c";

QueryDefinition definition = new QueryDefinition(sqlQueryText);

/*
Note that your Test object must have the same properties that
are stored in your database

    public class Test
    {

    [JsonProperty(PropertyName = "")]
    public string property { get; set; }
    }
*/

var iterator = container.GetItemQueryIterator(definition);

while (iterator.HasMoreResults)
{
    FeedResponse result = await iterator.ReadNextAsync();
    foreach (var item in result)
    {
        Console.Writeline(item.property);
    }
}