C# Serialize and send over Network

Question

0.00/5 (No votes)

See more:

Hi,
I want to serialize a class and send it over tcp. Thats no problem, but I get an exception while deserializing the stream in the client application.
Thats my code:

C#

[Serializable]
internal class SendObj1
{

    public int cmd;
    public string msg;
}

public class SendObj
{
    public int cmd;
    public string msg;
    public byte[] ToByte(int Command)
    {
        SendObj1 obj1 = new SendObj1();
        obj1.cmd = Command;
        XmlSerializer xs = new XmlSerializer(typeof(SendObj1));
        MemoryStream ms = new MemoryStream();
        xs.Serialize(ms, obj1);
        return ms.ToArray();
    }
    public byte[] ToByte(int Command, string Message)
    {
        SendObj1 obj1 = new SendObj1();
        obj1.cmd = Command;
        obj1.msg = Message;
        XmlSerializer xs = new XmlSerializer(typeof(SendObj1));
        MemoryStream ms = new MemoryStream();
        xs.Serialize(ms, obj1);
        return ms.ToArray();
    }
    public SendObj ToObj(byte[] buffer)
    {
        SendObj1 obj = new SendObj1();
        try
        {
            XmlSerializer xs = new XmlSerializer(typeof(SendObj1));
            MemoryStream ms = new MemoryStream();
            obj = (SendObj1) xs.Deserialize(ms);
            msg = obj.msg;
            cmd = obj.cmd;
        }
        catch (Exception e)
        {
        }
        return this;
    }

Posted 23-Dec-12 8:48am

Member 9622894

Add a Solution

Comments

Jibesh 23-Dec-12 14:58pm

what's the exception you got? Please provide the exception stack for better understanding of the problem

Member 9622894 23-Dec-12 15:13pm

System.InvalidOperationException was caught
Message=Fehler im XML-Dokument (0,0).
Source=System.Xml
StackTrace:
bei System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
bei System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
bei SendObj.ToObj(Byte[] buffer) in C:\Users\Maxi\documents\visual studio 2010\Projects\Obj\Obj\Class1.cs:Zeile 45.
InnerException: System.Xml.XmlException
Message=Das Stammelement ist nicht vorhanden.
Source=System.Xml
LineNumber=0
LinePosition=0
SourceUri=""
StackTrace:
bei System.Xml.XmlTextReaderImpl.Throw(Exception e)
bei System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
bei System.Xml.XmlTextReaderImpl.ParseDocumentContent()
bei System.Xml.XmlTextReaderImpl.Read()
bei System.Xml.XmlTextReader.Read()
bei System.Xml.XmlReader.MoveToContent()
bei Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderSendObj1.Read3_SendObj1()
InnerException:

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jibesh · Answer 1 · 2012-12-23T09:21:00

Solution 1

The exception says Root Element is not found. Since your are using XmlSerialization you need to set the RootNode. change the serializable class as below

C#

[Serializable]
[XmlRoot]
public class SendObj1
{
    [XmlElement]
    public int cmd = 0;
    [XmlElement]
    public string msg = string.Empty;
}

/EDIT
The deserialization part is incomplete, you need to pass the buffer to memory stream before deserialize the stream

C#

XmlSerializer xs = new XmlSerializer(typeof(SendObj1));
MemoryStream ms = new MemoryStream(buffer); // this is missing in your code
obj = (SendObj1) xs.Deserialize(ms);
msg = obj.msg;
cmd = obj.cmd;

Posted 23-Dec-12 9:21am

Jibesh

Updated 28-Dec-12 10:24am

v3

Comments

Member 9622894 23-Dec-12 16:23pm

i have still the same exception

Member 9622894 23-Dec-12 16:26pm

System.InvalidOperationException was caught
Message=Fehler im XML-Dokument (0,0).
Source=System.Xml
StackTrace:
bei System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
bei System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
bei SendObj.ToObj(Byte[] buffer) in C:\Users\Maxi\documents\visual studio 2010\Projects\Obj\Obj\Class1.cs:Zeile 47.
InnerException: System.Xml.XmlException
Message=Das Stammelement ist nicht vorhanden.
Source=System.Xml
LineNumber=0
LinePosition=0
SourceUri=""
StackTrace:
bei System.Xml.XmlTextReaderImpl.Throw(Exception e)
bei System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
bei System.Xml.XmlTextReaderImpl.ParseDocumentContent()
bei System.Xml.XmlTextReaderImpl.Read()
bei System.Xml.XmlTextReader.Read()
bei System.Xml.XmlReader.MoveToContent()
bei Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderSendObj1.Read3_SendObj1()
InnerException:

Jibesh 28-Dec-12 16:20pm

Check my updated solution for the reason for the exception