我是XmlSerializer的新手.我写了一个小类来保存数据库中的条目：
[Serializable]
public struct Entry
{
public string artkey,lid,request,status,requestdate;
}
很简单吧？序列化这些列表应该是小菜一碟.
我有一个编译这些列表的函数.要序列化我的列表,我尝试以下代码：
XmlSerializer serializer = new XmlSerializer(typeof(Entry)); System.IO.MemoryStream ms = new System.IO.MemoryStream(); serializer.Serialize(ms,entries.ToArray()); ms.WriteTo(Response.OutputStream);
此代码打印以下异常：
<error>System.InvalidOperationException: There was an error generating the XML document. ---> System.InvalidCastException: Specified cast is not valid. at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterEntry.Write3_Entry(Object o) --- End of inner exception stack trace --- at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter,Object o,XmlSerializerNamespaces namespaces,String encodingStyle,String id) at System.Xml.Serialization.XmlSerializer.Serialize(Stream stream,XmlSerializerNamespaces namespaces) at System.Xml.Serialization.XmlSerializer.Serialize(Stream stream,Object o) at CCB_Requests.xmlResponse_selectFromCcb_Requests(HttpResponse response) at CCB_Requests.ProcessRequest(HttpContext context)</error>
解决方法
您正在序列化一个Entry数组,将XmlSerializer的初始化更改为：
// typeof(Entry) ==> typeof(Entry[]) XmlSerializer serializer = new XmlSerializer(typeof(Entry[]));
