saving the status of an object is called serialization
eg: Dataset,lowlevelcache
Syntax:Cache["key"]
Low level cache
cache.insert("key",value)
hi Himanshu,
Serialization (known as pickling in python) is an easy way to convert an object to a binary representation that can then be e.g. written to disk or sent over a wire.
It's useful e.g. for easy saving of settings to a file.
You can serialize your own classes if you mark them with [Serializable] attribute. This serializes all members of a class, except those marked as [NonSerialized].
[Serializable]
[NonSerialized]
.NET offers 2 serializers: binary, SOAP, XML. The difference between binary and SOAP is:
XML is slightly different:
System.Xml.Serialization
[XmlIgnore]
An example of serialization/deserialization to a file:
using System.IO;using System.Diagnostics;using System.Runtime.Serialization;using System.Runtime.Serialization.Formatters;using System.Runtime.Serialization.Formatters.Binary;[Serializable]public class MySettings { public int screenDx; public ArrayList recentlyOpenedFiles; [NonSerialized]public string dummy;}public class Settings { const int VERSION = 1; static void Save(MySettings settings, string fileName) { Stream stream = null; try { IFormatter formatter = new BinaryFormatter(); stream = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None); formatter.Serialize(stream, VERSION); formatter.Serialize(stream, settings); } catch { // do nothing, just ignore any possible errors } finally { if (null != stream) stream.Close(); } } static MySettings Load(string fileName) { Stream stream = null; MySettings settings = null; try { IFormatter formatter = new BinaryFormatter(); stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.None); int version = (int)formatter.Deserialize(stream); Debug.Assert(version == VERSION); settings = (MySettings)formatter.Deserialize(stream); } catch { 0