ASP.NET Presentation #5

8/14/2019 ASP.NET Presentation #5

1/14

STANDARD CONTROLS


2/14

Session objectives

ASP.NET Controls

Whats in the Toolbox

Web forms vs HTML Controls Standard Controls in ASP.NET

Properties & Event of Standard

Control

http://www.guyfromchennai.com Kumar S
http://www.guyfromchennai.com/http://www.guyfromchennai.com/http://www.guyfromchennai.com/


3/14

ASP.NET Controls

WebForm Controls

HTML Controls

Web User Controls

Custom Controls



4/14

Whats in the Toolbox?

WebForm Controls

-TextBox, Label, Hyperlink, Etc

-DropDownList, DataGrid, DataList, Etc

HTML Controls (Client or Server)

ADO.NET Design Controls

System Components

Validation Controls



5/14

WebForm Vs HTML Controls

Both have the following benefits

An object model that you can program against on the server

A set of events for which you can write sever side event handlers

The ability to handle events in client script Interaction with validation controls so you can easily verify that a

user has entered appropriate information into a control

Data binding to one or more properties of the control

Support for HTML 4.0 styles if the Web Forms page is displayed in

a browser that supports cascading style sheets Pass-through ofcustom attributes



6/14

STANDARD CONTROLS IN ASP.NET

Button

CheckBox

CheckBoxList DropDownList

HyperLink

Image

ImageButton

ImageMap

Label

LinkButton

ListBox

TextBox



7/14

Properties & Event of Standard Control

Button - OnClick event to determine theparticular Button that was clicked

CheckBox

- CheckBox server control acceptsBoolean (true or false) input. Whenselected, its Checked property is true-CheckedChanged is the event



8/14

CheckBoxList-CheckBoxList has an Items collectionwith members that correspond toeach item in the list. To determinewhich items are selected, test theSelected property of each item

- SelectedIndexChanged is the Event




9/14

DropDownList-The value of the currently Selected item isexposed through the SelectedValue

property of DropDownList-SelectedIndexChanged is the Event

ImageButton- Like the Button control, ImageButton is

used to post back to the server withImageUrl Property




10/14

ImageMap-Click event also supplies the x/ycoordinates of where the user clicked

the image. This provides a means torespond differently depending onwhat part of the image is clicked.

TextBox-TextBox control enables the user toenter text in Text property




11/14


ListBox-The ListBox control provides asingle-selection or multiple-selectionlist. To enable multiple selection, setthe SelectionMode property toMultiple

-SelectedIndexChanged is the Event



12/14


HyperLink-The HyperLink control supports databinding to its Text and NavigateUrlproperties

Label-Displays text in a set location on the

page using Text property



13/14

LinkButton-Like the Button control, LinkButton isused to post a Web forms page back

to the server Image

-The Image control displays the image

defined by its ImageUrl property.




14/14

Session Summary

ASP.NET Controls

Whats in the Toolbox

Web forms vs HTML Controls Standard Controls in ASP.NET

Properties & Event of Standard

Control


Documents

ASP.NET Presentation #5