How to create xml document as a property in c#.net

[EDIT]
Hmm, reading your question again, I think I misunderstood your needs.
If you want I can remove the answer, if it is not helpful in your situation.


One way I have used a lot is to create a class containing all properties you want to save and restore, including a Serialize and Deserialize method. Then you can use a PropertyGrid and set the instance of your class to the SelectedObject member of the PropertyGrid.
Unless you have complicated structures you use as datatypes this approach is pretty straight forward and easy to get started with.

Example class

using System;
using System.ComponentModel;
using System.IO;
using System.Xml.Serialization;

namespace Test
{
    [Serializable]
    public class PropertyExample
    {
        private string fileName;

        PropertyExample()
        {
            fileName = "";
            Integer = 42;
            Text = "Hello World";
        }

        [DefaultValue(42)]
        public int Integer { get; set; }

        [DefaultValue("Hello World")]
        public string Text { get; set; }

        public static PropertyExample Deserialize(string fileName)
        {
            // Initialize the instance to its default values
            PropertyExample props = new PropertyExample();
            try
            {
                if (File.Exists(fileName))
                {
                    using (Stream str = File.OpenRead(fileName))
                    {
                        XmlSerializer xml = new XmlSerializer(typeof(PropertyExample));
                        props = (PropertyExample)xml.Deserialize(str);
                    }
                }
            }
            catch (Exception ex)
            {
                // Error handling
            }
            finally
            {
                props.fileName = fileName;
            }
            return props;
        }

        public void Serialize()
        {
            using (Stream str = File.OpenWrite(fileName))
            {
                XmlSerializer xml = new XmlSerializer(typeof(PropertyExample));
                xml.Serialize(str, this);
            }
        }
    }
}

Code for calling the class

// Get the properties
PropertyExample props = PropertyExample.Deserialize(@"C:\Temp\PropertyExample.xml");

// Assuming you have a PropertyGrid in your form
propertyGrid1.SelectedObject = props;

// Save the properties
props.Serialize();