HTTP request without browser

For this we use WebRequest class.This class  has a GetResponse() method that is used to send request to the address specified by URL.

Steps to be followed:
1.Start Visual Studio and open Console Application.
2.Add two namespaces using System.Net and using System.IO.
3.Add following code mentioned in the below screenshot in method
static void Main(string[] args){}

4.Run the program by pressing Ctrl+F5.Visual Studio starts a Console for us and runs the program.After a couple of moments, we can see some HTML on your screen.

Difference between .exe file and .dll file

In programming environment both .exe and .dll  are common.After completion of coding part we usually export it to either .exe or .dll.The basic differences between these two are
1. .exe file is executable file where as .dll is non-executable file.
2..exe file is used to launch application whereas .dll file is dynamic link library which commonly contains functions and procedures that can be used by other programs and is loaded into an application.
3. .exe file runs on its own but .dll can not run on its own and linked or referened to the exe file at run time.
4. one application one .exe file but one application many .dll file.
5..exe file can not be shared with other application but .dll file can be shared with other application.
6..exe file will have main function whereas .dll doesn't have main function.
7.There is only one entry point for .exe file but .dll are having many entry point
8..exe file cannot be reused whereas .dll can be reused.

Cross Browser

Introduction

There are several browsers and everyone does not use same browser and each one runs their own rendering engine. So it is not possible that our website or web application would run in each one of them. To avoid all these concept of cross browser came into the picture of internet world.

Cross browser is the concept or ability of website or web application or client-side scripting to work in the environment where they can get required features to run in any browser.

Don’t confuse with the multi browser where website or web application can only work in the environment where they have been guided to work. Cross browser make website or web application to be work in any environment.

Cross Browser Compatibility
Compatibility means functionality in different and alternative environment. It means how to perform equivalently under alternative condition.