Question

in my project i have xml file to store and retrieveDevice Objects
and i want user can add or delete in my xml file only by my application not manually
so i need to story data in some format user cannot understand it like viewState in asp.net base64 or some thing else

My Question is how i can save my data in xml file but i want user can not understand what is written

this is my Device Class

public class Device
    {
        public string Username { get; set; }
        public string AgentName { get; set; }
        public string Password { get; set; }
        public string Domain { get; set; }
        public string PeerURI { get; set; }
        public string SipURI { get; set; }
        public string FQDN { get; set; }
        public Enums.DeviceType Type { get; set; }
        public Enums.ServerTransportType TransportType { get; set; }
        public bool IsInitialized { get; set; }
    }

and this is my xml file

<?xml version="1.0" encoding="utf-8"?>
<settings>
  <username>foo</username>
  <AgentName>foo1</AgentName>
  <password>foo2</password>
  <domain>go</domain>
  <peerUri>140.242.250.200</peerUri>
  <sipUri>sip:[e-mail]</sipUri>
  <fqdn>ff.go.xxxx.com</fqdn>
  <type>2</type>
  <transportType>2</transportType>
</settings>

Answer 1

If you use Binary Serialisation, the file is not human readable at all.

Here is a short example for your issue:

public class Enums
{
    public enum DeviceType
    {
        Mouse,
        HardDisk,
        CdRom,
    }

    public enum ServerTransportType
    {
        Udp,
        Tcp,
    }
}

[Serializable]
public class Device
{
    public string Username { get; set; }
    public string AgentName { get; set; }
    public string Password { get; set; }
    public string Domain { get; set; }
    public string PeerURI { get; set; }
    public string SipURI { get; set; }
    public string FQDN { get; set; }
    public Enums.DeviceType Type { get; set; }
    public Enums.ServerTransportType TransportType { get; set; }
    public bool IsInitialized { get; set; }
}

public class BinarySerialize
{
    public void Test()
    {
        var device = new Device();

        device.Username = "userName";
        device.AgentName = "agentName";
        device.Password = "password";
        device.Domain = "domain";
        device.PeerURI = "peerURI";
        device.SipURI = "sipURI";
        device.FQDN = "fqdn";
        device.Type = Enums.DeviceType.HardDisk;
        device.TransportType = Enums.ServerTransportType.Tcp;
        device.IsInitialized = true;

        string fileName = @"C:\temp\device.bin";
        this.Serialize(device, fileName);

        var d = this.Deserialize(fileName);
    }

    public void Serialize(Device device, string fileName)
    {
        using (Stream stream = File.Open(fileName, FileMode.Create))
        {
            BinaryFormatter bformatter = new BinaryFormatter();
            bformatter.Serialize(stream, device);
            stream.Close();
        }
    }

    public Device Deserialize(string fileName)
    {
        var device = new Device();

        using (Stream stream = File.Open(fileName, FileMode.Open))
        {
            BinaryFormatter bformatter = new BinaryFormatter();
            device = (Device)bformatter.Deserialize(stream);
            stream.Close();
        }

        return device;
    }