Archive for October, 2009

using System;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
 
public class ObjectPharsing{
	public static string ToXml(Object obj) 
	{
		if (obj==null) throw new Exception("The object is not initialzed");
 
		StreamWriter writer = null;
		XmlSerializer serializer = null; 
		string result = null;
 
		try 
		{
			MemoryStream mem = new MemoryStream();
			writer = new StreamWriter(mem);
 
			serializer = new XmlSerializer(obj.GetType());
			serializer.Serialize(writer, obj); 
 
			byte[] data = mem.ToArray();
			result = System.Text.Encoding.UTF8.GetString(data);
		}
		catch (Exception ex)
		{
			throw new Exception(ex.Message, ex);
		}
		finally 
		{
			if (writer != null) writer.Close();
		}
 
		return result;
	}
 
	public static object ToObject(string xml, Type type)
	{
		byte[] data = System.Text.Encoding.Default.GetBytes(xml);
		MemoryStream mem = new MemoryStream(data);
 
		StreamReader reader = null;
		XmlSerializer serializer = null;
		object obj = null;
		try 
		{
			reader = new StreamReader(mem);
			serializer = new XmlSerializer(type);
 
			obj = System.Convert.ChangeType(serializer.Deserialize(reader), type);
		}
		catch (Exception ex)
		{
			throw new Exception(ex.Message + "\r\n" + ex.StackTrace, ex);
		}
		finally 
		{
			reader.Close();
		}
		return obj;
	}
}

//...blah blah blah
MyClass mc = new MyClass();
mc.attribute1 = "Init. Value";
mc.attribute2 = 20;
//... blah blah blah จะกำหนดค่าอะไรก็กำหนดไป ทำอะไรก็ทำไป
 
//แล้วก็ค่อยมาแปลงเป็น xml string
string mcXml = ObjectPharsing.ToXml();
//คราวนี้ก็ค่อยเอา mcXml ไปลง database
 
//สมมติเราเอาค่ามาจากที่เราลง database มาใช้
string restoreXml = ds.Tables[0].rows[0]["XML_STRING"].toString();
MyClass restoreMc = (MyClass)ObjectPharsing.ToObject(restoreXml,typeof(MyClass));

string myNumber1 = "1";
string myNumber2 = "34";
 
Console.Write(myNumber1.PadLeft(4, 0));
//จะได้ 0001;
 
Console.Write(myNumber2.PadLeft(4, 0));
//จะได้ 0034
 
Console.Write(myNumber1.PadRight(4, 0));
//จะได้ 1000
 
Console.Write(myNumber2.PadRight(4, 0));
//จะได้ 3400