如何在 ASP.net 中解析来自 Web 服务的数据

Question

我正在从 SOAP 服务向 asp.net 检索字符串。 我无法理解如何解析这个字符串并转换成什么变量类型？大批？收藏？目的？。检索到的字符串如下所示：

<string>
[{"Category":"Mobile Common Needs","CategoryID":"{6039207E61CB}","ProductCount":8,"DisplayName":"Mobile Common Needs"},{"Category":"A Vitamins","CategoryID":"{DB3AD2CE2EAD}","ProductCount":4,"DisplayName":"A Vitamins"},{"Category":"B Complex","CategoryID":"{82133AF08331}","ProductCount":7,"DisplayName":"B Complex"},{"Category":"B Vitamins","CategoryID":"{4BE6939D8F7E}","ProductCount":9,"DisplayName":"B Vitamins"},{"Category":"C Vitamins","CategoryID":"{29D6977A7DCB}","ProductCount":9,"DisplayName":"C Vitamins"},{"Category":"D Vitamins","CategoryID":"{FF8A7E14F1E5}","ProductCount":7,"DisplayName":"D Vitamins"},{"Category":"E Vitamins","CategoryID":"{459AEF26893A}","ProductCount":6,"DisplayName":"E Vitamins"},{"Category":"Health Solutions","CategoryID":"{44C28190872F}","ProductCount":10,"DisplayName":"Health Solutions"},{"Category":"Herb Supplements","CategoryID":"{C24C77EC05EF}","ProductCount":15,"DisplayName":"Herb Supplements"},{"Category":"Minerals","CategoryID":"{A9153D05AAEE}","ProductCount":13,"DisplayName":"Minerals"},{"Category":"Multivitamins","CategoryID":"{79E8951CAC06}","ProductCount":13,"DisplayName":"Multivitamins"},{"Category":"Sleep Aid","CategoryID":"{1D2F16A124BB}","ProductCount":1,"DisplayName":"Sleep Aid"},{"Category":"Supplements","CategoryID":"{9BE59D6B9B23}","ProductCount":22,"DisplayName":"Supplements"},{"Category":"Vitamin Packs","CategoryID":"{9FE0A91C0AA3}","ProductCount":5,"DisplayName":"Vitamin Packs"}]
</string>

Answer 1

您正在检索的是其中包含 JSON 数据的 XML。

如果您从中提取 JSON 字符串，那么您可以通过多种方式使用此返回字符串。您可以使用 JSON 结构中提到的所有字段（Category、CategoryID、ProductCount、DisplayName）为其创建自定义类，然后将字符串序列化为自定义类类型的对象。

这看起来像：

DataContractJsonSerializer serializer = 
    new DataContractJsonSerializer(typeof(YourObjectType));

YourObjectType = (YourObjectType)serializer.ReadObject(str);

您也可以像这样在 C#4 中使用新的动态关键字：

using System.Web.Script.Serialization;
JavaScriptSerializer jss = new JavaScriptSerializer();
var d=jss.Deserialize<dynamic>(str);

然后，您不必为对象定义类，并且可以通过 d.Category 访问项目，例如，在运行时 .NET 将检查该属性是否可用。