从Xml响应（RestSharp/C#）获取特定元素值

我有一段代码，它为我的请求和响应返回一个RestSharp对象：

        var request = new RestRequest(Method.POST);
        request.AddParameter("Content-Type", "application/xml", ParameterType.HttpHeader);
        request.AddParameter("security_key", apiKey, ParameterType.QueryString);
        request.AddParameter("transaction_id", transactionDetailsResource.TransactionId, ParameterType.QueryString);
        request.RequestFormat = DataFormat.Xml;
        response = client.Execute(request) as RestResponse;

然后，我有了一个带有以下代码的方法来获取我需要的元素：

    public static TransactionDetailsDto convertContent(RestResponse response){
        TransactionDetailsDto tranDto = new TransactionDetailsDto();

        XmlDocument doc = new XmlDocument();
        doc.LoadXml(response.Content);
        XmlElement root = doc.DocumentElement;
        XmlNode node = root.SelectSingleNode("/cc_number");
        tranDto.maskedCCNumber = node.Value;
        tranDto.response = response.Content;
        return tranDto;
    }

我可以在调试器中看到，

response.Content

确实有XML。我通过XmL指定了请求对象的数据格式。但是，当我获取获取特定值的行时，我看到一个空值。我不确定从这里到哪里去

我认为这行代码有点不正确：

XmlNode node = root.SelectSingleNode("/cc_number");

下面是

response.Content

xml的上半部分，其中包含我要查找的元素和值：

"<?xml version=\"1.0\" encoding=\"UTF-8\"?><nm_response><transaction><transaction_id>5432920844</transaction_id><partial_payment_id></partial_payment_id><partial_payment_balance></partial_payment_balance><platform_id>54e69fa3-36af-ea11-8ada-0050569419e2</platform_id><transaction_type>cc</transaction_type><condition>complete</condition><order_id>54e69fa3-36af-ea11-8ada-0050569419e2</order_id><authorization_code>857882</authorization_code><ponumber></ponumber><order_description></order_description><first_name></first_name><last_name>07675018324$02500$</last_name><address_1></address_1><address_2></address_2><company></company><city></city><state></state><postal_code>30041</postal_code><country></country><email></email><phone></phone><fax></fax><cell_phone></cell_phone><customertaxid></customertaxid><customerid></customerid><website></website><shipping_first_name></shipping_first_name><shipping_last_name></shipping_last_name><shipping_address_1></shipping_address_1><shipping_address_2></shipping_address_2><shipping_company></shipping_company><shipping_city></shipping_city><shipping_state></shipping_state><shipping_postal_code></shipping_postal_code><shipping_country></shipping_country><shipping_email></shipping_email><shipping_carrier></shipping_carrier><tracking_number></tracking_number><shipping_date></shipping_date><shipping>0.00</shipping><shipping_phone></shipping_phone><cc_number>4xxxxxxxxxxx7254</cc_number>

“543292084454e69fa3-36af-ea11-8ada-0050569419e2cccomplete54e69fa3-36af-ea11-8ada-0050569419e285788207675018324$02500$300410.004xxxxxxxxx7254

确保您拥有有效的xml数据，因为您提供的数据缺少关闭事务和nm_响应标记，这可能会导致解析问题。在选择要查找的节点时，您可以将选择字符串设置为：

XmlNode node = root.SelectSingleNode("/nm_response/transaction/cc_number")

这将选择要查找的特定节点，并允许您使用以下命令获取内部文本

String cc_Number = node.InnerText;

---

@Neo我输入的字符串错误，请确保是nm_响应，而不是nn_响应。这是我的一个输入错误。啊，我也错过了。我不喜欢必须处理XML的帮助！