Hi,
I see another problem here. It is not an good idea to derive from ArrayList,
because the XmlSerializer has special handling for ArrayList and also
classes that derive from it. Instead you should Package the ArrayList indo
another class (this may be for example a custom collection type).
The second thing you need to do is to tell the serializer if there are any
instances of custom objets, that you are inserting into the ArrayList. This
is done by the XmlInclude attribute.
Try this example:
using System;
using System.Collections;
using System.IO;
using System.Xml.Serialization;
using System.Text;
namespace XmlSerializationTest
{
class Program
{
static void Main(string[] args)
{
Subject subject = new Subject();
subject.name = "Subject Name";
subject.comment = "Subject Comment";
SubjectList subjectList = new SubjectList();
subjectList.subject = subject;
subjectList.list.Add("Test");
subjectList.list.Add(123);
CustomObject co = new CustomObject();
co.customString = "Custom String";
subjectList.list.Add(co);
XmlSerializer serializer = new
XmlSerializer(typeof(SubjectList));
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
serializer.Serialize(sw, subjectList);
Console.WriteLine(sb.ToString());
Console.ReadLine();
}
}
[XmlInclude(typeof(CustomObject))]
public class SubjectList
{
public Subject subject;
public ArrayList list;
public SubjectList()
{
list = new ArrayList();
}
}
public class Subject
{
public string name;
public string comment;
}
public class CustomObject
{
public string customString;
}
}
Robert
-----Original Message-----
From: Sergio Paracuellos [mailto:[EMAIL PROTECTED]
Sent: Donnerstag, 14. Oktober 2004 16:03
To: RoBiK
Cc: [EMAIL PROTECTED]
Subject: RE: [Mono-list] Problem with xml.Serialization
El jue, 14-10-2004 a las 15:42 +0200, RoBiK escribi�:
> As the error message says: The type gorganizer.Subject was not
> expected. Use the XmlInclude or SoapInclude attribute to specify types
> that are not known statically.
> You are assinging an instance of type gorganizer.Subject to a "obj"
> variable of type object. When the serializer tries to serialize this
> variable, it finds that this is not an instance of type object but
> something it did not expected. So either use the XmlInlude attribude
> to tell the serializer what to expect, or rework your code to use another
aproach.
>
> Robert
If I change the list to work with "Subject" the error is the same.
Could you put me an example of how to say the serializer what I want to
serialize?
Thanks!
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Sergio
> Paracuellos
> Sent: Donnerstag, 14. Oktober 2004 15:27
> To: [EMAIL PROTECTED]
> Subject: [Mono-list] Problem with xml.Serialization
>
> Hi!
>
> I'm doing an application and I need to serialize in xml a list of
> objects. I get the following error:
>
> Unhandled Exception: System.InvalidOperationException: The type
> gorganizer.Subject was not expected. Use the XmlInclude or SoapInclude
> attribute to specify types that are not known statically.
> in <0x001d0>
> System.Xml.Serialization.XmlSerializationWriter:WriteTypedPrimitive
> (string,string,object,bool)
> in <0x00380>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteObject
> (System.Xml.Serialization.XmlTypeMapping,object,string,string,bool,boo
> l,bool
> )
> in <0x00ca0>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteMember
> Elemen t (System.Xml.Serialization.XmlTypeMapElementInfo,object)
> in <0x004f8>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteListCo
> ntent
> (System.Xml.Serialization.TypeData,System.Xml.Serialization.ListMap,ob
> ject,S
> ystem.Text.StringBuilder)
> in <0x0024c>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteListEl
> ement
> (System.Xml.Serialization.XmlTypeMapping,object,string,string)
> in <0x0050c>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteObject
> (System.Xml.Serialization.XmlTypeMapping,object,string,string,bool,boo
> l,bool
> )
> in <0x001c0>
> System.Xml.Serialization.XmlSerializationWriterInterpreter:WriteRoot
> (object)
> in <0x000e0> System.Xml.Serialization.XmlSerializer:Serialize
> (object,System.Xml.Serialization.XmlSerializationWriter)
> in <0x00150> System.Xml.Serialization.XmlSerializer:Serialize
> (System.Xml.XmlWriter,object,System.Xml.Serialization.XmlSerializerNam
> espace
> s)
> in <0x000a4> System.Xml.Serialization.XmlSerializer:Serialize
> (System.IO.Stream,object)
> in <0x000b4> gorganizer.MainWindow:SaveDataToXml () in <0x0002c>
> gorganizer.MainWindow:OnSaveClicked
> (object,System.EventArgs)
> in <0x000bc> (wrapper delegate-invoke)
> System.MulticastDelegate:invoke_void_object_EventArgs
> (object,System.EventArgs)
> in <0x001c8> GtkSharp.voidObjectSignal:voidObjectCallback (intptr,int)
> in <0x00094> (wrapper native-to-managed)
> GtkSharp.voidObjectSignal:voidObjectCallback (intptr,int) in
> (unmanaged) (wrapper managed-to-native) Gtk.Application:gtk_main () in
> <0x00080> (wrapper managed-to-native) Gtk.Application:gtk_main () in
> <0x00014> Gtk.Application:Run () in <0x00044>
> gorganizer.Gorganizer:Main ()
>
> A resume of the code:
>
> When I push save button:
>
> private void OnSaveClicked (object o, EventArgs args) {
> this.SaveDataToXml();
> }
>
>
> private void SaveDataToXml () {
> using (FileStream fs = new FileStream("data.xml", FileMode.Create)) {
> XmlSerializer serializer = new XmlSerializer(typeof(SubjectList));
> serializer.Serialize(fs, mySubjectList);
> }
> }
>
> * SubjectList.cs:
>
> using System;
> using System.Collections;
> using System.Xml.Serialization;
>
> namespace gorganizer {
>
> public class SubjectList: ArrayList, IMyList {
> private object obj;
> private int length;
>
> //For Serialization
> public SubjectList (){}
>
> public Subject Obj {
> get {
> return ((Subject)obj);
> }
> }
>
> public int Length () {
> return this.Count;
> }
>
> /*
> * Add an object to list if doesn't exists
> */
> public bool AddToList(object obj) {
> if (obj != null && !this.Contains(obj)) {
> this.Add(obj);
> Console.WriteLine("Insertado");
> return true;
> }
> return false;
> }
>
> /*
> * Remove a object if it is in the list
> */
> public bool RemoveFromList(object obj) {
> if (this.Contains(obj) && obj != null) {
> this.Remove(obj);
> Console.WriteLine("Eliminado");
> return true;
> }
> return false;
> }
>
> public void ListElements (ArrayList myList) {
> this.PrintValues(myList);
> }
>
> /* returns a Subject from specified name */
> public Subject getSubject (string name) {
> Subject aux = null;
> Subject s = null;
> IEnumerator i = this.GetEnumerator();
> while (i.MoveNext()) {
> if (i.Current is Subject) {
> aux = (Subject) i.Current;
> if (aux.Name.Equals(name)) {
> s = aux;
> }
> }
> }
> return s;
> }
>
> private void PrintValues (ArrayList myList) {
> IEnumerator myEnumerator = myList.GetEnumerator();
> while (myEnumerator.MoveNext())
> Console.WriteLine(myEnumerator.Current.ToString());
> }
> }
> }
>
> Subject.cs:
>
> using System;
> using System.Xml.Serialization;
>
> namespace gorganizer {
>
> public class Subject {
>
> //Constructor
> public Subject () {
> }
>
> private string name;
> public string Name {
> get {
> return name;
> }
> set {
> name = value;
> }
> }
>
> private TimeTable theory;
> public TimeTable Theory {
> get {
> return theory;
> }
> set {
> theory = value;
> }
> }
>
> private string comment;
> public string Comment {
> get {
> return comment;
> }
> set {
> comment = value;
> }
> }
>
> public void DeleteFields () {
> name = null;
> theory = null;
> comment = null;
> }
> }
> }
>
> Any Idea of what it's happening?
>
> Thanks to all,
>
> Regards,
>
> Sergio Paracuellos
>
> _______________________________________________
> Mono-list maillist - [EMAIL PROTECTED]
> http://lists.ximian.com/mailman/listinfo/mono-list
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