Use Cache Technology to Improve Efficiency

The cache technology of ASP. NET greatly improves the efficiency.CodeThe following is a simple implementation code:

1. read cached data and load XML data when displayed on the page

Public void loaddata ()
{
Dataview source = (dataview) cache ["mydata"];
If (Source = NULL)
{
Dataset DS = new dataset ();
Filestream FS = new filestream (server. mappath ("loginmsg. xml"), filemode. Open, fileaccess. Read );
Streamreader reader = new streamreader (FS );
DS. readxml (Reader );
FS. Close ();
Source = new dataview (Ds. Tables [0]);
Cache. insert ("mydata", source, new cachedependency (server. mappath ("loginmsg. xml ")));
Errormsg. Text = "data read from the file ";
}
Else
{
Errormsg. Text = "data read from the cache ";
}
Mydatagrid. datasource = source;
Mydatagrid. databind ();
}

2. Store Interactive Data in XML and store the data in the cache

Private void loginmsg_click (Object sender, system. eventargs E)
{
If (! Page. isvalid)
{
Errormsg. Text = "login information required ";
Return;
}
Dataset DS = new dataset ();
Filestream FS = new filestream (server. mappath ("loginmsg. xml"), filemode. Open, fileaccess. Read, fileshare. readwrite );
Streamreader reader = new streamreader (FS );
DS. readxml (Reader );
FS. Close ();
Datatable dt = Ds. Tables [0];
Datarow newrow = DT. newrow ();
Newrow ["custom_email"] = customeamil. text;
Newrow ["custom_pass"] = custompass. text;
Newrow ["login_time"] = datetime. Now. tostring ();
FS = new filestream (server. mappath ("loginmsg. xml"), filemode. Create, fileaccess. readwrite, fileshare. readwrite );
Textwriter writer = new streamwriter (FS );
Writer = textwriter. synchronized (writer );
DS. Tables [0]. Rows. Add (newrow );
DS. writexml (writer );
Writer. Close ();
Cache. Remove ("mydata ");
Loaddata ();

}