在做返回datatable时出现无法序列化 DataTable。未设置 DataTable 名称。
代码如下：
Hashtable ht = new Hashtable();
ht.Add("departure", departure);
ht.Add("arrive", arrive);
ht.Add("departuretime", departuretime);
ht.Add("flytype", flytype);
Class.ClassFlyfind flightfind = new Service.Class.ClassFlyfind();
DataTable tmpdta = new DataTable();
tmpdta.TableName = "tmp";
tmpdta = flightfind.flightfind(ht);
return tmpdta;
Class
Hashtable ht = new Hashtable();
ht.Add("departure", departure);
ht.Add("arrive", arrive);
ht.Add("departuretime", departuretime);
ht.Add("flytype", flytype);
Class.ClassFlyfind flightfind = new Service.Class.ClassFlyfind();
DataTable tmpdta = new DataTable();
tmpdta.TableName = "tmp";
tmpdta = flightfind.flightfind(ht);
return tmpdta;
报错如下
System.InvalidOperationException: 生成 XML 文档时出错。 ---> System.InvalidOperationException: 无法序列化 DataTable。未设置 DataTable 名称。
在 System.Data.DataTable.WriteXmlSchema(XmlWriter writer, Boolean writeHierarchy)
在 System.Data.DataTable.System.Xml.Serialization.IXmlSerializable.WriteXml(XmlWriter writer)
在 System.Xml.Serialization.XmlSerializationWriter.WriteSerializable(IXmlSerializable serializable, String name, String ns, Boolean isNullable, Boolean wrapped)
在 Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write4_DataTable(Object o)
在 Microsoft.Xml.Serialization.GeneratedAssembly.DataTableSerializer.Serialize(Object objectToSerialize, XmlSerializationWriter writer)
在 System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
--- 内部异常堆栈跟踪的结尾 ---
在 System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Object o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)