I believe the problem is in your IXmlSerializable.ReadXml() code. You are
using ReadString() which will not consume the end tag. This is not
noticeable when you are deserializing a single instance, as the element's
value is correctly read and it doesn't really matter that the reader is left
positioned on the end tag since there is nothing else to read. But when you
place this same class inside a container any members following an element of
this type will not be correctly read.
<MyContainer>
<Value1>
1
</Value1> <== Reader is positioned here after ReadString
<Value2> <== it should be positioned here
2
</Value2>
</MyContainer>
If you substitute ReadString( ) with ReadElementString( ) it should leave
the reader in the appropiate position after deserializing this member.
public void ReadXml(System.Xml.XmlReader reader)
{
_value = reader.ReadElementString();
}
Fernando Tubio
----- Original Message -----
From: "Alex Henderson" <[EMAIL PROTECTED]>
Sent: Tuesday, September 05, 2006 8:22 PM
Subject: Re: IXmlSerializable problem...
Nope 2.0 framework... last time I played with IXmlSerializable was with the
1.1 framework a couple of years back, but I don't think my usage patterns
were similar (not using the same type twice in a container class) as I
didn't run into problems... I've tried expelling a schema as well, but that
doesn't seem to have any effect.
I'll probably have to log the generated serialization code and trace it
manually... :(
Chez,
- Alex
> -----Original Message-----
> From: Discussion of advanced .NET topics. [mailto:ADVANCED-
> [EMAIL PROTECTED] On Behalf Of Patrick Steele
> Sent: Wednesday, 6 September 2006 10:12 a.m.
> To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
> Subject: Re: [ADVANCED-DOTNET] IXmlSerializable problem...
>
> Yes I did. I wrestled with it for a few hours and couldn't come up with
> any reason. I assume you're using .NET 1.1 and it should be noted that
> IXmlSerializable is unsupported in 1.1 (it's documented in 2.0 so I hope
> that means it's now supported for 2.0).
>
> My needs were fairly simple so I resorted to creating a derived
> Hashtable that implemented IXmlSerializable and controlled the XML
> writing myself. It worked for my needs but was definitely not a
> "generic" solution.
>
> --
> Patrick Steele
> Microsoft .NET MVP
> http://weblogs.asp.net/psteele
>
>
>
> -----Original Message-----
> From: Discussion of advanced .NET topics.
> [mailto:[EMAIL PROTECTED] On Behalf Of Alex Henderson
> Sent: Tuesday, September 05, 2006 3:16 AM
> To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
> Subject: [ADVANCED-DOTNET] IXmlSerializable problem...
>
>
> I've implemented a few classes with custom XML serialization. work's
> fine, but when a put more then one instance of that class into a
> container, then serialization works, but when Deserializing only the
> first instance is worked on - at which point all processing for the
> remaining elements is abandoned... I'm sure it's probably easy to fix,
> anyone come across this before?
>
> Here's a test fixture to demonstrate my problem:
>
> [TestFixture]
> public class SettingsConverterFixture
> {
> [Test]
> public void MyContainerConvert()
> {
> XmlSerializer serializer = new
> XmlSerializer(typeof(MyContainer));
>
> MemoryStream stream = new MemoryStream();
>
> MyContainer original = new MyContainer();
> original.Value1 = new CustomValue("1");
> original.Value2 = new CustomValue("2");
>
> Assert.AreEqual("1", original.Value1.Value);
> Assert.AreEqual("2", original.Value2.Value);
>
> serializer.Serialize(stream, original);
>
> stream.Seek(0, SeekOrigin.Begin);
>
> MyContainer reloaded =
> (MyContainer)serializer.Deserialize(stream);
>
> Assert.AreEqual("1", reloaded.Value1.Value);
> Assert.IsNotNull(reloaded.Value2); // blows up here
> Assert.AreEqual("2", reloaded.Value2.Value);
> }
> }
>
> public class MyContainer
> {
> public CustomValue Value1;
> public CustomValue Value2;
> }
>
> public class CustomValue : IXmlSerializable
> {
> private string _value;
>
> public string Value
> {
> get { return _value; }
> }
>
> public CustomValue(string value)
> {
> _value = value;
> }
>
> public CustomValue()
> {
> }
>
> #region IXmlSerializable Members
>
> public XmlSchema GetSchema()
> {
> return null;
> }
>
> public void ReadXml(System.Xml.XmlReader reader)
> {
> _value = reader.ReadString();
> }
>
> public void WriteXml(System.Xml.XmlWriter writer)
> {
> writer.WriteString(_value);
> }
>
> #endregion
> }
>
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