SetUp a WebApplication Step By Setp Process | Web Application Setup in Asp.Net:

Steps To  Setup A Web application In Visual Studio 2010

11.    Open VS2010 à File à New Project à Web application.

22.    Create Your Own web application.

33.     Set the Configuration module Debug to release mode and then Build the project.

44.     Right click on the Solution Explorer à Add à  New Project à Other Project Types à Select Setup and    DeploymentSelect Visual Studio Installer à Select Web Setup Project.

Name the WebSetup Project as your Wish According to your Requirement. Now A Web setup project is added to your Solution. Right click on the setup project .

A window is displaying with four Options.

1.          Project Output.

2.         File

3.         Merge Module.

4.         Assembly.

Select Project output in this Window you have to add Primary Output and what are the files you want to include in your setup. Like content files, Documentation files etc.

In the Solution Explorer Click the Setup project and observe the Editors. File System editor,   User Interface Editor, Registry Editor, File Types editor,Custom action Editor.

Now we have to work on these Editors.

File System Editor:- In this Editor You have One Folder Called Web Application Folder. Right Click on this folder add the files like images, Connection String files, rtf   files which   we are using in Setup.

User Interface Editor:  By using this Editor You can add different type of windows which user can interact with your application. Ex: Installation Window, Warning Message, Installation Address, License File, Read file etc.

From the Customer Information Window You can specify the Organization Number, Product Key to the User. This Product Key you can generate through Installer Class. That will explain In my next article.

Registry Editor: The Registry Editor allows you to specify registry keys and values to be added to the registry of the target computer. By default the Registry Editor displays a standard set of registry keys that correspond with the standard Windows registry keys: HKEY_CLASSES_ROOT, HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, HKEY_USERS, and HKEY_PER_USER. For Setup projects, additional keys that match the Manufacturer property for the project are displayed under HKEY_CURRENT_USER\Software and HKEY_LOCAL_MACHINE\Software.
Playing with registry need more experienced person otherwise it may course some trouble in target computer, but you can add or remove keys according to what your project needs.

To add a registry key select a top level node, in the action menu click new key, then type the new name and edit properties of the key in the properties window as necessary.
To add a sub key select a key node, in the action menu point to new and then key and you can edit its properties from the properties window. Also you can remove a key by selecting it and then click Delete from Edit menu. Also you can add string, binary, and DWORD values. During installation the values will be written to the registry and any existing values will be overwritten by the values that you specify.

Launch Conditions Editor: By Using This Editor You can specify the Launch Conditions of your Application on target System. Example: frame work condition (minimum, maximum), Version of IIS (minimum, maximum).

After Completed these Steps build your setup file. And right click on the setup file click Install it will install the .msi installer along with your product setup file.

Right click on Your Solution à  select Open  Folder in Windows Explorer  à open Bin/Debug directory à You can Find Setup, msi installer of setup file. Double click on your setup file and it will install your product.