你可以下载我的演示进行测试。
我当地宇宙的数据。

本地查询。 https://localhost:8081/_explorer/index.html .

按c代码查询。

Console.WriteLine("Beginning operations...\n");
            CosmosClient client = new CosmosClient("https://localhost:8081/", "C2***w==");
            Database database = await client.CreateDatabaseIfNotExistsAsync("ToDoList");
            Container container = database.GetContainer("jason");
            // Query for an item
            FeedIterator <dynamic> feedIterator =  container.GetItemQueryIterator<dynamic>("SELECT value MIN(c.age) from c");
            while (feedIterator.HasMoreResults)
            {
                FeedResponse<dynamic> response = await feedIterator.ReadNextAsync();
                foreach (var item in response)
                {
                    Console.WriteLine(item);
                }
            }