xml Serialzer to file

Question

Here is my code. Can someone please help me on this its compile but it doesn't run. Its shows an error "Chapter17_Exe2.Form1.Movie cannot be serialized because it does not have a parameterless constructor." Can someone please correct me what i have done wrong.

thanks

Noll

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Xml.Serialization;

namespace Chapter17_Exe2
{
    public partial class Form1 : Form
    {
        Movie[] movie = new Movie[10];

        public class Movie
        {
            //create a constrator
            private string title;
            private string director;
            private int year;

            public string Title{get; set;}
            public string Director{get; set;}
            public int Year { get; set; }

            public Movie(string t, string d, int y)
            {
                title = t;
                director = d;
                year = y;
            }
         }

        public Form1()
        {
            InitializeComponent();

        }

        private void btnSave_Click(object sender, EventArgs e)
        {

            XmlSerializer serializer = new XmlSerializer(typeof(Movie));
            TextWriter textWriter = new StreamWriter(@"C:\Users\ALCABONE\Desktop\Movie xml");
            serializer.Serialize(textWriter, movie);
            textWriter.Close();

        }

        private void btnExit_Click(object sender, EventArgs e)
        {

            this.Close();
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            txtTitle.Clear();
            txtTitle.Clear();
            txtYear.Clear();
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            txtTitle.Clear();
            txtDirector.Clear();
            txtYear.Clear();
        }

    }

}

                                                       

Answer 1

Hi,

To Serialize you should have a parameter less constructor with XML Serlization

Try below code

public class Movie
        {
            //create a constrator
            private string title;
            private string director;
            private int year;

            public string Title{get; set;}
            public string Director{get; set;}
            public int Year { get; set; }
           [Obsolete("For XML Serialization Only", true)]
            public Movie()
            {
            }
            public Movie(string t, string d, int y)
            {
                title = t;
                director = d;
                year = y;
            }
         }

Thanks,

---

Welcome to MSDN Forums. Feel free to ask your questions and Please Note to Vote helpful topics and Mark answering posts. Sudhakar