2010-11-11 68 views
0

我在我的程序中使用WSProxy类here动态调用Web服务,我需要将返回的对象解析为XML,或者至少访问返回的Web服务结果中的成员。如何在C#中获得动态类型数组的成员?

例如,如果我收到StateCodes的数组,我需要做的:

public object RunService(string webServiceAsmxUrl, string serviceName, string methodName, string jsonArgs) 
    { 

     WSDLRuntime.WsProxy wsp = new WSDLRuntime.WsProxy(); 

     // Convert JSON to C# object. 
     JavaScriptSerializer jser = new JavaScriptSerializer(); 
     var dict = jser.Deserialize<Dictionary<string,object>>(jsonArgs); 

     // uses mi.Invoke() from the WSProxy class, returns an object. 
     var result = wsp.CallWebService(webServiceAsmxUrl, serviceName, methodName, dict); 

我已经试过各种方法去数组成员,但我打了死胡同。

 // THIS WON'T WORK. 
     // "Cannot apply indexing with [] to an expression of type 'object'" 
     var firstResult = result[0]; 

     // THIS WON'T WORK. 
     // "foreach statement cannot operate on variables of type 'object' because 'object' does not contain a public definition for 'GetEnumerator'" 
     foreach (var i in result) 
     { 

     } 


return object 

//At the end of the class, if I try to return the object for XML parsing, I'll get this: 
//System.InvalidOperationException: There was an error generating the XML document. ---> System.InvalidOperationException: The type StateCodes[] may not be used in this context. 
    //at System.Xml.Serialization.XmlSerializationWriter.WriteTypedPrimitive(String name, String ns, Object o, Boolean xsiType) 

因为我不知道这是事先返回数组的类型,我不能做早期绑定。我正在使用C#3.5,我刚刚开始学习。我一直听到“反思”,但我读过的例子似乎并不适用于这个问题。

如果这个问题很混乱,那是因为我很困惑。

回答

1

尝试强制转换为IEnumerable的

var list = result as IEnumerable; 
if(list != null) 
{ 
    foreach (var i in list) 
    { 
     // Do stuff 
    } 
} 
+0

就像一个魅力。谢谢! – Jake 2010-11-12 14:21:11

1

尝试将其转换为IEnumerable

var goodResult = result as IEnumerable; 

if (goodResult != null) // use it 
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