dmdb/model/XmlData.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml.Serialization;

namespace dezentrale.model
{
    public class XmlData
    {
        [XmlElement] public DateTime LastChanged { get; set; } = DateTime.Now;

        [XmlIgnore]
        private static Type[] SerializeTypes =
        {
            typeof(bool),
            typeof(uint),
            typeof(int),
            typeof(string),
            typeof(DateTime),
            typeof(Configuration),
            typeof(ConfigSmtp),
            typeof(ConfigVSMail),
            typeof(FormMail),
            typeof(LogEntry),
            typeof(Member),
            typeof(Member.ePaymentClass),
            typeof(Member.eRole),
            typeof(Member.eStatus),
            typeof(Member.eType),
            typeof(MemberList),
            typeof(MemberPayment),
            //typeof(List<KeyValue>),
            //typeof(List<TaskLogEntry>),
            //typeof(List<ListColumn>),
        };

        public static XmlData LoadFromFile(string fileName)
        {
            FileStream fs = null;
            try
            {
                XmlSerializer ser = new XmlSerializer(typeof(XmlData), XmlData.SerializeTypes);

                fs = new FileStream(fileName, FileMode.Open);
                XmlData ds = (XmlData)ser.Deserialize(fs);
                fs.Close();
                return ds;
            }
            catch (Exception e)
            {
                if (fs != null) fs.Close();
                if (e.InnerException != null) throw e.InnerException; else throw e;
            }
        }

        public static bool SaveToFile(string fileName, XmlData ds)
        {
            try
            {
                if (File.Exists(fileName))
                {
                    if (File.Exists(fileName + ".bak")) File.Delete(fileName + ".bak");
                    File.Move(fileName, fileName + ".bak");
                }

                XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
                ns.Add("", "");
                XmlSerializer ser = new XmlSerializer(typeof(XmlData), XmlData.SerializeTypes);
                FileStream fs;
                fs = new FileStream(fileName, FileMode.Create);
                ser.Serialize(fs, ds, ns);
                fs.Close();
            }
            catch (Exception e)
            {
                if (e.InnerException != null)
                    throw e.InnerException;
                else
                    throw e;
            }
            return true;
        }

    }
}