Solved

IXmlSerializable Headache...

Posted on 2008-10-21
3
1,133 Views
Last Modified: 2013-12-17
Can anyone explain to me my error? The object refuses to deserialize correctly. I have a manager object to control "Banks", and the "BankManager" needs to serialize each bank. Here's the code in the manager:

        public void WriteXml(XmlWriter writer)
        {
            writer.WriteStartElement("Banks");
            foreach (BaseBank b in banks.Values.ToList())
            {
                writer.WriteStartElement("Bank");
                writer.WriteAttributeString("Name", b.Name);
                writer.WriteAttributeString("Type", b.GetType().AssemblyQualifiedName);
                XmlSerializer xx = new XmlSerializer(b.GetType());
                xx.Serialize(writer, b);
                writer.WriteEndElement();
            }
            writer.WriteEndElement();
        }

        public void ReadXml(XmlReader reader)
        {
            reader.ReadStartElement(); //Start reading the BankManager element
                                       //Part of the IXmlSerializer contract
            reader.ReadStartElement("Banks"); //Start reading the Banks element
            while (reader.IsStartElement()) //Loop through each starting element
            {
                reader.ReadStartElement(); //Open the bank element
                string name = reader.GetAttribute("Name"); //Read out the name
                string type = reader.GetAttribute("Type"); //and AQN (assy. qualified name)

                XmlSerializer xx = new XmlSerializer(Type.GetType(type));
                BaseBank b = (BaseBank)xx.Deserialize(reader); //Deserialize the information from
                                                               //our xml reader for this object
                b.Name = name;
                banks.Add(b.Name, b);
                reader.ReadEndElement(); //Close the bank element
            }
            reader.ReadEndElement(); //Close out the Banks element
            reader.ReadEndElement(); //Stop reading the BankManager element
                                     //Part of the IXmlSerializer contract
        }

And here's serialization for my FileInputBank:

public override void WriteXml(XmlWriter writer)
        {
            writer.WriteElementString("Source", source.FilePath);
            writer.WriteElementString("Repeat", _repeat.ToString());
        }

        public override void ReadXml(XmlReader reader)
        {
            reader.ReadStartElement();
            source = new FileInput(reader.ReadElementContentAsString("Source", ""));
            _repeat = bool.Parse(reader.ReadElementContentAsString("Repeat", ""));
            reader.ReadEndElement();
        }

The XML written to a file is below (I see no errors, so it must be how I'm reading the XML)
<?xml version="1.0"?>
<BankManager>
  <Banks>
    <Bank Name="ConstantBank1" Type="PluggedIn.Data.Banks.FileInputBank, PluggedIn.Data, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">
      <FileInputBank>
        <Repeat>True</Repeat>
        <Source>C:\sample.txt</Source>
      </FileInputBank>
    </Bank>
  </Banks>
</BankManager>

Open in new window

0
Comment
Question by:tasky
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 3

Expert Comment

by:ovidiucraciun
ID: 22782590
please post the following:

compilable cod that i can easy copy and paste in my VS, compile and run it and see the error you are facing...
0
 
LVL 3

Accepted Solution

by:
tasky earned 0 total points
ID: 22975619
I've solved the problem myself.  Just as a note to anyone coming across similar issues, before you call .ReadStartElement, check if the element is empty; if so, do not call .ReadEndElement as it throws off everything
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Ready to improve network connectivity? Watch this webinar to learn how SD-WANs and a one-click instant connect tool can boost provisions, deployment, and management of your cloud connection.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question