使用C＃和cosmos客户端从cosmos db中删除文档

Question

我是Cosmos DB的新手，在阅读了microsoft docs之后，我试图从cosmos db中删除记录。 我试图尽可能地遵循该示例。 正在查找和读取记录，但是尝试删除时遇到了未找到的错误。

集合已分区，我在示例中提到了分区键，但仍然会导致错误。

    private async Task QueryItemsAsync()
    {
        var sqlQueryText = "SELECT * FROM c WHERE c.tenantId = '5c6cb2d77c1c2edc001b9007' and c.id = 'abae8abf-5836-464f-8129-1f0e83a1f639'";

        QueryDefinition queryDefinition = new QueryDefinition(sqlQueryText);
        FeedIterator<Order> queryResultSetIterator = this.container.GetItemQueryIterator<Order>(queryDefinition);

        List<Order> orders = new List<Order>();

        while (queryResultSetIterator.HasMoreResults)
        {
            FeedResponse<Order> currentResultSet = await queryResultSetIterator.ReadNextAsync();
            foreach (Order o in currentResultSet)
            {
                orders.Add(o);
                Console.WriteLine("\tRead {0}\n", o);       
            }
        }
    }         
    private async Task DeleteFamilyItemAsync()
    {
        var partitionKeyValue = "tenantId";
        var orderId = "abae8abf-5836-464f-8129-1f0e83a1f639";

        // Delete an item. Note we must provide the partition key value and id of the item to delete
        ItemResponse<Order> orderResponse = await this.container.DeleteItemAsync<Order>(orderId, new PartitionKey(partitionKeyValue));
        Console.WriteLine("Deleted Family [{0},{1}]\n", partitionKeyValue, orderId);
    }

如下所示，正在读取记录，因此可以找到它，但是当我尝试删除它时，并没有删除它。 读取{“ Id”：null，“病人ID”：null，“ orchestrationId”：null，“ preOrderId”：“ 88557ec1-dccb-4397-9ce4-20b6aeb1d636”，“ cartId”：“ adc463ef-7f38-4fa8-8f37-e505db3a5134 “，” confirmationNum“：” QDQ-9244014-14708“，” cartConfirmationNum“：” IBM-8622967-14079“，” countryCode“：null，” type“：” order“，” cancelDate“：null，” id“： “ abae8abf-5836-464f-8129-1f0e83a1f639”}

发生NotFound错误：CosmosRequestException; StatusCode = NotFound; SubStatusCode = 0; ActivityId = 6dd52d23-68c8-4e6d-b4ff-70cd2a6921cf; RequestCharge = 1.24; Message =响应状态代码未指示成功：404子状态：0原因:(）。 演示结束，按任意键退出。

Answer 1

问题出在您的partitionKeyValue 。 您正在提供分区键定义而不是值。 该值是实际的租户ID，而不是文本tenantId 。

然后，您的删除代码应如下所示：

private async Task DeleteFamilyItemAsync()
{
    var partitionKeyValue = "5c6cb2d77c1c2edc001b9007"; // <-- This is the change
    var orderId = "abae8abf-5836-464f-8129-1f0e83a1f639";

    // Delete an item. Note we must provide the partition key value and id of the item to delete
    ItemResponse<Order> orderResponse = await this.container.DeleteItemAsync<Order>(orderId, new PartitionKey(partitionKeyValue));
    Console.WriteLine("Deleted Family [{0},{1}]\n", partitionKeyValue, orderId);
}