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How to deserialize xml file with NetDataContractSerializer

Posted on 2012-04-10
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Last Modified: 2012-06-21
Hello all,

 How do I deserialize the FileStream?

The code below is how the xml file is created.  Thanks to a solution to a question I posted yesterday.

class Program
    {
        static void Main(string[] args)
        {
            var configuration = new FileConfiguration();

            configuration.AddFile("some", "test", "1.0");
            configuration.AddFile("other", "test2", "2.0");

            var fStream = new FileStream(Directory.GetCurrentDirectory() + @"\test.xml", FileMode.OpenOrCreate);

            var serializer = new NetDataContractSerializer();
            serializer.Serialize(fStream, configuration);

            fStream.Close();


            Console.Read();

        }

        
    }

    [DataContract]
    class FileConfiguration
    {
        private readonly IList<File> _lstFiles;

        public FileConfiguration()
        {
            _lstFiles = new List<File>();
        }

        public void AddFile(string name, string value, string version)
        {
            _lstFiles.Add(new File(name, version, value));
        }

        [DataMember]
        public File[] Files
        {
            get { return _lstFiles.ToArray(); }
        }
    }

    [DataContract]
    class File
    {
        [DataMember]
        public string FileName { get; private set; }

        [DataMember]
        public string FileVersion { get; private set; }

        [DataMember]
        public string FileValue { get; private set; }

        public File(string name, string version, string value)
        {
            FileName = name;
            FileVersion = version;
            FileValue = value;
        }
    }

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I've tried the below code block but it returns an ArgumentNull Exception, _lstFiles is null.

var configuration = new FileConfiguration();

            var fStream = new FileStream("C:\\Config.xml", FileMode.Open);

            var serializer = new NetDataContractSerializer();
            serializer.Deserialize(fStream);

            foreach (File f in configuration.Files)
            {
                Console.WriteLine(f.FileValue);
            }

            fStream.Close();

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Thanks
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Comment
Question by:AndyC1000
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1 Comment
 
LVL 20

Accepted Solution

by:
BuggyCoder earned 2000 total points
ID: 37831316
Here is your code, added setter to Files Property so that Array Can Be Converted To List Again:-

class Program
    {
        static void Main(string[] args)
        {
            try
            {
                var configuration = new FileConfiguration();

                configuration.AddFile("some", "test", "1.0");
                configuration.AddFile("other", "test2", "2.0");

                var fStream = new FileStream(Directory.GetCurrentDirectory() + @"\test.xml", FileMode.OpenOrCreate);

                var serializer = new NetDataContractSerializer();
                serializer.Serialize(fStream, configuration);

                fStream.Close();

                fStream = System.IO.File.OpenRead(Directory.GetCurrentDirectory() + @"\test.xml");
                configuration = serializer.Deserialize(fStream) as FileConfiguration;
                fStream.Close();

                if (configuration != null) Console.WriteLine(configuration.Files.Count());
            }
            catch (Exception)
            {
                throw;
            }
            

            Console.Read();

        }

        
    }

    [DataContract]
    public class FileConfiguration
    {
        private IList<File> _lstFiles;

        public FileConfiguration()
        {
            _lstFiles = new List<File>();
        }

        public void AddFile(string name, string value, string version)
        {
            _lstFiles.Add(new File(name, version, value));
        }

        [DataMember]
        public File[] Files
        {
            get { return _lstFiles.ToArray(); }
            private set { _lstFiles = value.ToList(); }
        }

    }

    [DataContract]
    public class File
    {
        [DataMember]
        public string FileName { get; private set; }

        [DataMember]
        public string FileVersion { get; private set; }

        [DataMember]
        public string FileValue { get; private set; }

        public File(string name, string version, string value)
        {
            FileName = name;
            FileVersion = version;
            FileValue = value;
        }
    }

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