[Mono-devel-list] Reflection exception

[Herscovici, Avi]

I got the latest code from CVS (thanks Lluis) and it fixed a lot of
serialization things, but now I get an ambiguous matching  error from
calling the XmlSerializer constructor.  Our code is complex (compiles in
.Net fine) but I've narrowed it to what seems to be a problem with
reflection and overloaded functions/properties.  I've stripped my code down
to the bare minimum to illustrate what happens.  Again, I'd be willing to
work on this problem if no one has a quick fix or wants to take it up.
Here's the code (to get rid of the problem I have to comment out all
overloaded Add functions and this properties and only leave the ones with a
single parameter.  Also the implementation of the methods/properties in
script.cs is irrelevant.):


// ------------------------------------------ file1.cs
------------------------------------
using System;
using System.Xml.Serialization;
using System.IO;
using System.Xml;
using Scripts;


namespace Serial.test {

public class sertest {

		public static void Save(System.IO.Stream stream, object x)
		{
			XmlSerializer ser = new
XmlSerializer(typeof(Script));
			ser.Serialize(stream, x);
		}

		public static void Save(string filename, object x)
		{
			FileStream str = new FileStream(filename,
FileMode.Create, FileAccess.Write);
			Save(str, x);
			str.Close();
		}

		public static object Load(System.IO.Stream stream)
		{
			object s;
			Console.WriteLine("Debug line 1a");
			XmlSerializer ser = new
XmlSerializer(typeof(Script));
			Console.WriteLine("Debug line 2a");
		//	try {
			s = (object)ser.Deserialize(stream);
		//	}
		//	catch (Exception e) {Console.WriteLine("Exception: "
+ e);}
		//	s = null;
			return s;
		}


		public static object Load(string filename)
		{
				object s;
				Console.WriteLine("Debug line 2");
				FileStream str = new FileStream(filename,
FileMode.Open, FileAccess.Read);
				Console.WriteLine("Debug line 3");
				s = Load(str);
				Console.WriteLine("Debug line 4");
				str.Close();
				return s;
		}
	static void Main() {
	string filename = "test.ser";
	Script x =  new Script();
	Save(filename, x);
	Script temp = (Script)Load(filename);
	Console.WriteLine("Finished");
	}
}
}

// ------------------------------- Script.cs
----------------------------------

using System;
using System.Collections;

namespace Scripts
{
	public class Script: CollectionBase, ICloneable
	{
		public Script()
		{
		}
		public Script(Script p)
		{
		}
		public object Clone()
		{
			return new Script(this);
		}
		public void Add(object p)
		{
			InnerList.Add(p);
		}
		public void Add(string name, object value)
		{
			Add(new object());
		}
		public void Add(string[] names, string[] values)
		{
		}
		public void Add(Script collection)
		{
		}
		public object this[int index]
		{
			get
			{
				return (object)InnerList[index];
			}
			set
			{
				InnerList[index] = value;
			}
		}
		public string this[string name]
		{
			get
			{
				return this[name, true];
			}
			set
			{
				int index = 0;
				if(index != -1)
				{
					this[index] = new object();
				}
				else
				{
				 Add(name, value);
				}
			}
		}
		public string this[string name, bool ignoreCase]
		{
			get
			{
				return null;
			}
		}
	}
}
// ------------------- END --------------------------------------------

Here's the error:

Unhandled Exception: System.Reflection.AmbiguousMatchException: Ambiguous
matching in method resolution
in <0x00148> 00 System.MonoType:GetMethodImpl
(string,System.Reflection.BindingFlags,System.Reflection.Binder,System.Refle
ction.CallingConventions,System.Type[],System.Reflection.ParameterModifier[]
)
in <0x0005a> 00 System.Type:GetMethod (string)
in <0x000bd> 00 System.Xml.Serialization.TypeData:get_ListItemType ()
in <0x000eb> 00
System.Xml.Serialization.XmlReflectionImporter:ImportListMapping
(System.Type,System.Xml.Serialization.XmlRootAttribute,string,System.Xml.Ser
ialization.XmlAttributes,int)
in <0x0013d> 00
System.Xml.Serialization.XmlReflectionImporter:ImportTypeMapping
(System.Type,System.Xml.Serialization.XmlRootAttribute,string)
in <0x000fa> 00 System.Xml.Serialization.XmlSerializer:.ctor
(System.Type,System.Xml.Serialization.XmlAttributeOverrides,System.Type[],Sy
stem.Xml.Serialization.XmlRootAttribute,string)
in <0x00021> 00 System.Xml.Serialization.XmlSerializer:.ctor (System.Type)
in <0x0002d> 00 Serial.test.sertest:Save (System.IO.Stream,object)
in <0x00049> 00 Serial.test.sertest:Save (string,object)
in <0x00049> 00 Serial.test.sertest:Main ()