ASP.NET Introduction
What is ASP.NET:
A Microsoft server-side web technology. ASP.NET takes an object-oriented programming approach to web page execution. Every element in an ASP.NET page is treated as an object and run the server. An ASP.NET page gets compiled into an intermediate language by a .NET common language runtime-compliant compiler.
Asp.Net is used to create web pages and web services and is an integral part of Microsoft’s .net vision.
Asp.net language supports is
1)ASP.NET uses ADO.NET
2)ASP.NET supports full visual basic, not VBScript
3)ASP.NET supports C#(C sharp) and C++
4)ASP.NET supports Java Script
Working with Visual Studio:
Start->run->devenv
It will display main window of visual studio
File menu->new->website->visual c#->select Asp.Net empty website
Weblocation->e:\aspnet\demosite[drive:\dir\websitename]
Visual studio create a folder with website name, in this folder website related files will be placed.
Creating asp.net webpage into demosite:
Goto view menu and select solution explorer
Right click on website path [e:\aspnet\demosite]
Goto->And select add new item.
Select webform template
Name given to –default.aspx
Click on Add button
Place server side code below body tag
<body>
<h1>
<%
Response.Write(“Asp.Net page using VS”);
%>
</h1>
</body>
Goto Contrl F5
[it will activate browser name to display webpage output]
Weblocations supported by visualstudio:
Weblocation will specify storage location of website. Visualstudio is providing 3 weblocations
1)File system
2)HTTP
3)FTP
File system:
Website will be managed by asp.net development server. Asp.net development server comes with visualstudio, Asp.net development server can be called as “cussini webserver”.
Advantages:
1)IIS is not requires
2)asp.net will be configured implicitly
Dis advantages:
1)web pages are not accessible with in network
2)it doesn’t support advanced concepts like security, Webservices
HTTP:
Website will be managed by webserver IIS
Advantages:
1)webpages are accessible with in network
2)it supports all the advanced concepts like security, web services
Disadvantages:
1)IIS installation is required
2)Asp.net to be configured properly
FTP[file transfer protocol]
This allows creating website in one system and storing into another system
Webform structure:
1)webform is template provided by visualstudio to create asp.net webpage.
2)The feature of webform template is “what you see is what you get” means webpage presented at the creation will be shown at the time of running webpage with browser.
Webform template will provide 3 views
1)design view
2)source view
3)code view (or) logic view
Design view:
This allows developer to arrange user interfaces[controls] on webform
Source view:
This allows developer to view (or) to place markup content into webform
Code view (or)logic view
This allows developer to place logic part into webform, This comes in the form of CS file
Webserver controls:
1)client side controls are accessible only with in client side scripting
2)webserver controls are accessible with in server side programming, This makes asp.net developer job easier
3)asp.net is providing set of controls to provides user interaction with asp.net webpage, This controls are called “webserver controls”
4)web server controls are called “smart controls”[behavior of web server controls will be based on browser type and browser settings. This is called smart behavior]
Web Server controls can be categorized into following things
1)Standard controls
EX: Label,textbox,button…
2)Data controls
EX: gridview,Datalist…
3)Validation controls
EX: Required field validator......
4)Navigation controls
EX: tree view,menu…....
