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C#, can't serialize to binary
[Serializable]
public class Settings : ISerializable
{
    public static string server= "http://localhost/";
    public static string username = "myname";
    public static bool savePassword = true;
    public static bool autoSync = true;
    public static string password = "mypass";
    public static string folderPath1= "c:/";
    public static string folderPath2= "c:/";
    public static string autoSyncDuration = "300";
    public static string lastSyncTime = "???";


    public Settings()
    { }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        Type myTypeObj = Type.GetType("Settings");
        foreach (FieldInfo p in myTypeObj.GetFields())
        {
            Object value = p.GetValue(null);
            info.AddValue(p.Name, value, p.GetType());
        }
    }

    public Settings(SerializationInfo info, StreamingContext context)
    {
        Type myTypeObj = Type.GetType("Settings");
        FieldInfo p;
        foreach (SerializationEntry e in info)
        {
            p = myTypeObj.GetField(e.Name);
            p.SetValue(null, e.Value);
        }
    }
}

private void writeSettings()
    {
        pcb_savingSettings.Visible = true;
        FileStream fileStream = new FileStream(settingFile, FileMode.Create, FileAccess.Write, FileShare.None);
        BinaryFormatter bf = new BinaryFormatter();
        bf.Serialize(fileStream, new Settings());

        fileStream.Close();
        pcb_savingSettings.Visible = false;
    }
    private void readSettings()
    {
        if (!File.Exists(settingFile))
        {
            writeSettings();
        }
        FileStream fileStream = new FileStream(settingFile, FileMode.Open, FileAccess.Read, FileShare.None);
        BinaryFormatter bf = new BinaryFormatter();
        bf.Deserialize(fileStream);
        fileStream.Close();
    }

bf.Deserialize(fileStream);

public void GetObjectData(SerializationInfo info, StreamingContext context)
{
    Type myTypeObj = Type.GetType("Settings");
    foreach (FieldInfo p in myTypeObj.GetFields())
    {
        Object value = p.GetValue(null);
        info.AddValue(p.Name, value, p.GetType());
    }
}

public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        Type myTypeObj = Type.GetType("Settings");
        foreach (FieldInfo p in myTypeObj.GetFields())
        {
            Object value = p.GetValue(null);
            info.AddValue(p.Name, value, value.GetType());
        }
    }