asp.net to deal with the long ViewState code _ Practical skills in the original file

Copy Code code as follows:

public class Xvpage:page
{
static private DirectoryInfo _dir;
Private DirectoryInfo Dir
{
Get
{
if (_dir = null)
{
_dir = new DirectoryInfo (Path.Combine (AppDomain.CurrentDomain.BaseDirectory, "App_Data"));
if (!_dir.exists)
_dir.create ();
_dir = new DirectoryInfo (Path.Combine (_dir.fullname, "ViewState"));
if (!_dir.exists)
_dir.create ();
}
return _dir;
}
}
protected override Object LoadPageStateFromPersistenceMedium ()
{
PageStatePersister PS = this. PageStatePersister;
Ps. Load ();
if (Ps. ControlState!= null)
Ps. ControlState = Antiserialization ((string) ps. ControlState);
if (Ps. ViewState!= null)
Ps. ViewState = Antiserialization ((string) ps. ViewState);
return new Pair (PS. ControlState, PS. ViewState);
}
protected override void Savepagestatetopersistencemedium (object state)
{
PageStatePersister PS = this. PageStatePersister;
If (state is Pair)
{
Pair Pair = (Pair) state;
Ps. ControlState = pair. A;
Ps. ViewState = pair. Second;
}
Else
{
Ps. ViewState = State;
}
if (Ps. ControlState!= null)
Ps. ControlState = Antiserialization (PS. ControlState);
if (Ps. ViewState!= null)
Ps. ViewState = Antiserialization (PS. ViewState);
Ps. Save ();
}
Private Object Antiserialization (String Stateid)
{
String statestr = (string) Cache[stateid];
string file = Path.Combine (Dir.fullname, Stateid);
if (statestr = null)
Statestr = File.readalltext (File);
Else
Cache.remove (Stateid);
return new ObjectStateFormatter (). Deserialize (STATESTR);
}
private string Antiserialization (Object obj)
{
String value = new ObjectStateFormatter (). Serialize (obj);
String Stateid = (DateTime.Now.Ticks + (long) value. GetHashCode ()). ToString (); Generate a discrete ID number
File.writealltext (Path.Combine (Dir.fullname, Stateid), value);
Cache.Insert (Stateid, value);
return Stateid;
}
protected override void OnUnload (EventArgs e)
{
Base. OnUnload (e);
DateTime dt = DateTime.Now.AddMinutes (-20);
foreach (FileInfo fl in dir.getfiles ())
if (fl. LastAccessTime < DT)
Try
{
Fl. Delete ();
}
Catch
{
}
}
}

You just need to inherit xvpage in the background of the page.
public partial class Index_content:xvpage