It's a very logical requirement to validate user entered email
address before processing anything.in this way you will
never get a invalid email address when you do something
with email address like send email,etc.

System.Net namespace is for dealing with networking.It
is concerned with operations like downloading, uploading
files,making requests by http protocols.

Nowadays soial media like facebook is in almost
all websites.

in php there is a command which is used
to redirect to a page from a page.the following
codes shows hot to achieve this.

to create and use the object instances on remote machines .Net remoting
is used,without any DCOM involved.

this article will cover .net remoting with common hosting method in IIS.

Often receiving "Fatal error: Allowed memory size of 33554432 bytes exhausted" when trying to upload an image with low mb file size. To solve this error, try to increase the memory allocated for PHP. For that you need to set the limit to 32MB, 64MB, 128MB or 256MB. However is based and depends upon your host provider.

It's a very common requirement to show hint in textbox when empty
and when textbox gets focus hint goes away.now a days many websites
implemented showing hint.there are many ways to do that by jquery.