temelm temelm - 1 month ago 17
C# Question

How to serialize/deserialize a C# WCF DataContract to/from XML

I am developing a WCF service which will be consumed by multiple different client applications. In order to make one functionality work, the server needs to read an XML file into a C# DataContract which is then passed on to the concerned client. As far as I understand from the MSDN website, this is possible but I couldn't find any complete examples. In particular, the website talks about a 'stream' parameter which I don't quite get yet.

My data contract has one property field which is a list of another data contract which has multiple simple property fields.

e.g.

[DataContract]
public class MyClass1 {
[DataMember]
public string name;
[DataMember]
public int age;
}

[DataContract]
public class MyClass2 {
[DataMember]
public List<MyClass1> myClass1List;
}


My classes look something like this.

Answer

Here is an example

MyClass1 obj = new MyClass1();
DataContractSerializer dcs = new DataContractSerializer(typeof(MyClass1));

using (Stream stream = new FileStream(@"C:\tmp\file.xml", FileMode.Create, FileAccess.Write))
{
    using (XmlDictionaryWriter writer = 
        XmlDictionaryWriter.CreateTextWriter(stream, Encoding.UTF8))
    {
        writer.WriteStartDocument();
        dcs.WriteObject(writer, obj);
    }
}

Books b = new Books();

DataContractSerializer dcs = new DataContractSerializer(typeof(Books));

try
{
    Stream fs = new FileStream(@"C:\Users\temelm\Desktop\XmlFile.xml", FileMode.Create, FileAccess.Write);

    XmlDictionaryWriter xdw = XmlDictionaryWriter.CreateTextWriter(fs, Encoding.UTF8);
    xdw.WriteStartDocument();
    dcs.WriteObject(xdw, b);
    xdw.Close();
    fs.Flush();
    fs.Close();
}
catch (Exception e)
{
    s += e.Message + "\n";
}