if you want to read get/read data from a file according to
querystring using StreamReader then following codes will
help you.It is very useful in some case.here i get data from
a ashx file according to query string i pass to the file -

ASP.NET controls automatically keep their data
when page is sent to the server in response to
events (like a user clicking a button).
this persistence of data is called view state

by the following way you can resize a image to a predefined
dimension and resolution.you can also use it to make a image
thumbnails.

There are many internet browsing shortcut keys for browsers.
Following are some of them which are most common -

if you having a lot html strings,you may want to
have only plain text removing all html tags.you
can do it using REGEX