Solved

Serializing a Windows.From object

Posted on 2008-06-22
9
293 Views
Last Modified: 2013-11-07
Hello,

I have a windows app and I want to serialize a Windows.Form object. I tried to serialize it using BinaryFormatter but I got SerializationException because the Windows.Form class is not marked as serializable
I've found a solution at www.codeproject.com/KB/dotnet/Surrogate_Serialization.aspx . But it requires a lot of code to be written and it doesn't seem a good way.

So, is there a way to solve this problem or another approach to save the object permanently in HD


thanks in advance.
0
Comment
Question by:bur3001
  • 4
  • 3
9 Comments
 
LVL 18

Expert Comment

by:vbturbo
ID: 21841128
Have you tried to mark/tag the Form object as serializeable ?

    [Serializable]
    class Form1
{


}

I havent tried to serialize a Form object but here is how you do it with a class

vbturbo
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
 
namespace Serialize_People
{
    // A simple program that accepts a name, year, month date,
    // creates a Person object from that information, 
    // and then displays that person's age on the console.
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length == 0)
            {
                // If they provide no arguments, display the last person
                Person p = Deserialize();
                Console.WriteLine(p.ToString());
            }
            else
            {
                try
                {
                    if (args.Length != 4)
                    {
                        throw new ArgumentException("You must provide four arguments.");
                    }
 
                    DateTime dob = new DateTime(Int32.Parse(args[1]), Int32.Parse(args[2]), Int32.Parse(args[3]));
                    Person p = new Person(args[0], dob);
                    Console.WriteLine(p.ToString());
 
                    Serialize(p);
                }
                catch (Exception ex)
                {
                    DisplayUsageInformation(ex.Message);
                }
            }
        }
 
        private static void DisplayUsageInformation(string message)
        {
            Console.WriteLine("\nERROR: Invalid parameters. " + message);
            Console.WriteLine("\nSerialize_People \"Name\" Year Month Date");
            Console.WriteLine("\nFor example:\nSerialize_People \"Tony\" 1922 11 22");
            Console.WriteLine("\nOr, run the command with no arguments to display that previous person.");
        }
 
        private static void Serialize(Person sp)
        {
            // Create file to save the data to
            FileStream fs = new FileStream("Person.Dat", FileMode.Create);
 
            // Create a BinaryFormatter object to perform the serialization
            BinaryFormatter bf = new BinaryFormatter();
 
            // Use the BinaryFormatter object to serialize the data to the file
            bf.Serialize(fs, sp);
 
            // Close the file
            fs.Close();
        }
 
        private static Person Deserialize()
        {
            Person dsp = new Person();
 
            // Open file to read the data from
            FileStream fs = new FileStream("Person.Dat", FileMode.Open);
 
            // Create a BinaryFormatter object to perform the deserialization
            BinaryFormatter bf = new BinaryFormatter();
 
            // Use the BinaryFormatter object to deserialize the data to from file
            dsp = (Person)bf.Deserialize(fs);
 
            // Close the file
            fs.Close();
 
            return dsp;
        }
    }
 
 
//***********************************************************************************************
 
    [Serializable]
    class Person : IDeserializationCallback
    {
        public string name;
        public DateTime dateOfBirth;
        [NonSerialized]
        public int age;
 
        public Person(string _name, DateTime _dateOfBirth)
        {
            name = _name;
            dateOfBirth = _dateOfBirth;
            CalculateAge();
        }
 
        public Person()
        {
        }
 
        public override string ToString()
        {
            return name + " was born on " + dateOfBirth.ToShortDateString() + " and is " + age.ToString() + " years old.";
        }
 
        private void CalculateAge()
        {
            age = DateTime.Now.Year - dateOfBirth.Year;
 
            // If they haven't had their birthday this year, 
            // subtract a year from their age
            if (dateOfBirth.AddYears(DateTime.Now.Year - dateOfBirth.Year) > DateTime.Now)
            {
                age--;
            }
        }
 
        void IDeserializationCallback.OnDeserialization(Object sender)
        {
            // After deserialization, calculate the age
            CalculateAge();
        }
    }
}

Open in new window

0
 

Author Comment

by:bur3001
ID: 21841206
thanks vbturbo,

I marked the class that inherits from Windows.Forms.From as [Serializable] but no success, because I can't mark the base class.
0
 
LVL 18

Expert Comment

by:vbturbo
ID: 21841228
0
The New “Normal” in Modern Enterprise Operations

DevOps for the modern enterprise offers many benefits — increased agility, productivity, and more, but digital transformation isn’t easy, especially if you’re not addressing the right issues. Register for the webinar to dive into the “new normal” for enterprise modern ops.

 

Author Comment

by:bur3001
ID: 21841355

ok, if i can't serialize a From object, is there another approach to save the object?
0
 
LVL 18

Expert Comment

by:vbturbo
ID: 21841665
Depends on the context!

If you want to save time building up the window again and againg with the same static data you could
Cache the object instead.

http://www.codeproject.com/KB/cs/cacheinwinformapps.aspx

vbturbo
0
 

Author Comment

by:bur3001
ID: 21857805
First of all, I'm sorry for my late response.
What I understood from the web page you pointed out about cashing is that cash class can be used to save an object in memory NOT in HD and I want the object to be saved in a file not in memory.

Thanks.
0
 
LVL 18

Accepted Solution

by:
vbturbo earned 500 total points
ID: 21864008
perhaps this approach could be an idea

http://www.codeproject.com/KB/menus/XMLMenu.aspx

Building up your form with controls saved in a xml file

vbturbo
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
collection output issue 9 36
C qsort compare function issue 6 16
Why use this lambda? 12 33
VB.NET - Refactor Class per SOLID principles 2 16
Whether you’re a college noob or a soon-to-be pro, these tips are sure to help you in your journey to becoming a programming ninja and stand out from the crowd.
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question