Server Side Controls and Client-Side Controls in ASP.NET
In .Net the control can be considered as an object[textbox object,-----]
This can be classified into 2 types:
1.client side control
2.server side control
-> the control object created by browser is called
“client side control”
<input type=”text”name=”t1”>
It is an instruction to browse to create textbox object[client side control]
This client side control object is not accessible with in server side codeing
<%
T1.value=”—“->not accepted //text box will use serverside
-------
%>
HTML server controls:
->HTML server controls will provided similar syntax of client side controls to
Make migration easier.
->providing Run at=server to client side control becomes server side
Control, this makes conversion easier.
->HTML server controls are provided based the number of client side controls,
This area does not have any changes from asp.net1.0to asp.net4.0
Web server controls:
->webserver controls provides very rich functionality compare to
Html server controls,this are very advanced controls.
->webserver controls can be sub divided into following things:
1.standard controls
Label,bullon,textbox,…….
2.validation controls
Requiredfield validator,range validator,…….
3.data controls
Gridview,listview,chart[new in asp.net4.0],….
4.navigation controls
Menu,treeview,…..
5.webparts controls
Webpartzone,…….
6.login controls
Creat userwizard,….
7.Ajax extension controls
Script manager,……..
->web server controls supports extensibility.
[Extensibility means Microsoft can introduce new controls from one version to another and developer can create user defined webserver controls]
->webserver controls provides xml based syntax.
<asp:controlname id=”- -“
Run at=”server”+properties>
</asp:control name>
Label control:label control can be used to display static text, this support positioning on web page,
This positioning is not possible
Using response.write->// its used in less times.
Textbox control:
->It allows user to edit data
->It call be used in the form of single line,multiline and
Pass word type.
Button control:
This control supports page submission. ->client submit to data into server
Page submission is the concept of client submitting data to webserver.
This can be classified into 2 things:
1.pastback submission
The page submitting to itself is called”postback submission”.
2.cross page submission
One webpage is submitting to another page is called”cross page submission”
Example for cross page submission:
->select new website with vs2010
Location.-file system e:\aspnet.103\crosspagesite
->add webform into site
Name-login.aspx
[website menu->add new item->select webform]
->goto design view of webpage to place controls.
->the controls are provided with in tool box window
[view menu->toolbox]
->clicking on source will complete webpage,content
Generated by designer.
->select textbox1 and press f4
[it will display properties window]
Id-t1
->goto textbox2 props id-t2
Text mode-password
->button1 props
Text –submit
Pastbackurl-validate.aspx
Note :
Pastback url property requires destination page[page present in server]
To which data to be submitted.
->add webform
Validate.aspx[this page purpose is reading data submitted by login page]
---
<body>
<%
string uname=Request.From[“t1”];
String pwd=Request.From[“t2”];
Response.Write(“welcome to “+uname);
//’+’ is concatenation operator in c#
%>
->F5[login.aspx]
Analyzing page submission:
Page submission depends on 2 things:
1.arrangement of data for transmission
2.reading data
Arrangement of data:
There are 2 methods for arranging data.
1.post method
2.get method
Differences between POST method and GET method.
Post GET
1.the data will be arranged 1.the data will be arranged with
Within http message body in http header
[Appending to url]
2.it supports large amount of 2.it supports small amount of
Data arrangement data arrangement
[maximum of 2kb]
3.It provides security for 3.It doesn’t provide security
Password type data for password type
4.Transmission will be slow 4.Transmission will be faster
