XML文档（1，1）中存在错误。 反序列化时

Question

I am using Silverlight for my serializing and deserializing.

I ahve succesfully done serializing by obtaining objects from the class and the xml which i obtained on serializing , the same xml i am trying to deserialize.

My code to do so is:

namespace SliderLastTry
{
    public class ControlClass
    {
        public void Main()
        {

            Parameters pc = new Parameters()
              {
                  Parameter = { new Parameter { Name = "Name1", Label = "Label1", Unit = "Uint1", Component = { new Component { Type = "Type1", Attributes = { new Attributes { Type = "Combo", Displayed = "42", Selected = "02", Items = { "10", "11", "12", "13", "14" } } } } } }, { new Parameter { Name = "Name2", Label = "Label2", Unit = "Uint2", Component = { new Component { Type = "Type2", Attributes = { new Attributes { Type = "Slider", Displayed = "52", Selected = "05", Items = { "20", "21", "22", "23", "24" } } } } } } } }
               ,
                  Separator = { new Separator { Separators = "AutoSkew1" } }
              };
            String xml = pc.ToXml(); //This function serializes and returns xml.
            XmlSerializer deserializer = new XmlSerializer(typeof(Parameters));
            XmlReader reader = XmlReader.Create(new StringReader(xml));
            Parameters parameter = (Parameters)deserializer.Deserialize(reader);
        }
    }

This line in this code gives me exception:

Parameters parameter = (Parameters)deserializer.Deserialize(reader);

Thsi is code for serializing (I mean the class where MyXML is defined):

namespace SliderLastTry
{
    public static class Xml
    {
        public static string ToXml(this object objectToSerialize)
        {
             var memory = new MemoryStream();
             var serial = new XmlSerializer(objectToSerialize.GetType());
             serial.Serialize(memory, objectToSerialize);  
            var utf8 = new UTF8Encoding();
            return utf8.GetString(memory.GetBuffer(), 0, (int)memory.Length);  
        }
    }
}

And the warning obtained is:

There is an error in XML document (1, 1).

Please see the exception in details:

Inner Exception:

 {System.Xml.XmlException: Invalid data at root level. Line 1, position 1. 
        to System.Xml.XmlTextReaderImpl.Throw (Exception e) 
        to System.Xml.XmlTextReaderImpl.Throw (String res, String arg) 
        System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace to () 
        System.Xml.XmlTextReaderImpl.ParseDocumentContent to () 
        System.Xml.XmlTextReaderImpl.Read to () 
        System.Xml.XmlReader.MoveToContent to () 
        Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderParameters.Read7_parameters to ()}

At stack Trace:

at System.Xml.Serialization.XmlSerializer.Deserialize (XmlReader xmlReader, String encodingStyle, Object events)
at System.Xml.Serialization.XmlSerializer.Deserialize (XmlReader xmlReader, String encodingStyle)
at System.Xml.Serialization.XmlSerializer.Deserialize (XmlReader xmlReader)
SliderLastTry.ControlClass.Main to ()
ctor to SliderLastTry.MainPage .. ()
at SliderLastTry.App.Application_Startup (Object sender, e StartupEventArgs)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler (UInt32 indexType, handlerDelegate Delegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent (unmanagedObj IntPtr, IntPtr unmanagedObjArgs, argsTypeIndex Int32, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)

Answer 1

Afterall i found soluton for it. Reaplacing this:

var memory = new MemoryStream();
             var serial = new XmlSerializer(objectToSerialize.GetType());
             serial.Serialize(memory, objectToSerialize);  
            var utf8 = new UTF8Encoding();
            return utf8.GetString(memory.GetBuffer(), 0, (int)memory.Length);

with

var writer = new StringWriter();
            var serializer = new XmlSerializer((objectToSerialize.GetType()));
            serializer.Serialize(writer, objectToSerialize);
            string xml = writer.ToString();
            return xml;

worked because StringReader is in compatible with utf8 .