54181823 0461 Chapter 9 Creating Rich Content in ASP Net

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ASP.NET jQuery Cookbook

Sonal Aneel Allana

Chapter No.9

"Creating Rich Content in ASP.NET"


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In this package, you will find:A Biography of the author of the book

A preview chapter from the book, Chapter NO.9 "Creating Rich Content in ASP.NET"A synopsis of the books content

Information on where to buy this book

About the AuthorSonal Aneel Allana is a Senior Technical Consultant with Accentiv' SurfGold,

Singapore. She has over a decade of experience in building web and desktop solutions in

Microsoft technologies. She has worked with government agencies, credit bureaus,

banks, financial institutions, and multinationals, delivering high-end customized solutionsto meet their needs. She has worked on applications ranging from core banking software

and B2B links to content management, workflow, and loyalty engines.

From time to time, she has also taken up the role of project lead and has carried numerousprojects from conceptualization through implementation successfully. In addition to her

experience in Microsoft technologies, she is well versed in J2EE and LAMP platforms.

She holds a Master's degree in Computer Science from the National University of

Singapore and a Bachelor's degree in Computer Engineering from Mumbai University.

She is also passionate about network and data security and has a certificate in Security

Technology and Management from the Institute of Systems Science, National University

of Singapore.

For More Information:www.PacktPub.com/asp-net-jquery-cookbook/book
http://www.packtpub.com/asp-net-jquery-cookbook/bookhttp://www.packtpub.com/asp-net-jquery-cookbook/bookhttp://www.packtpub.com/asp-net-jquery-cookbook/book


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I would like to dedicate this book to my father for always believing in me

and loving me unconditionally. Dad, I am sorry that you passed away

before this book could become a reality.Special thanks to my mother for her love, sacrifices, and encouragement.

My husband, Aneel, for his constant guidance, support, and patience.

Without him this book would be impossible.

Thanks to Salim, Minaz, Rehan, and Yasmeen. There are many things I

owe to you.

Thanks to the wonderful team at Packt Publishing for their hard work,

dedication, and patience. Special thanks to Steven for being a constant

guide throughout the process. Thanks to my reviewers for meticulously

evaluating the content and for helping to make the book better.



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ASP.NET jQuery CookbookThe jQuery library has become increasingly popular with web application developersbecause of its simplicity and ease of use. The library is supported by an active community

of developers and has grown significantly over the years after its inception in 2006 byJohn Resig. Using this library eases complicated tasks and adds to the interactive

experience of the end user. Its extensible plugin architecture enables developers to build

additional functionalities on top of the core library.

With Microsoft's contribution of Templates, DataLink, and Globalization plugins to the

jQuery library and the distribution of jQuery with Visual Studio 2010 onwards, the

library has gained popularity with ASP.NET developers. jQuery can be very easilyinterfaced with ASP.NET controls as well as custom user controls. It can be used to

validate controls using client side scripts, thus giving us an alternative for server side

Validation Controls. It can be used to incorporate cool animation effects as well as tocreate graphic-rich pages. It can be used to post AJAX requests to web services, page

methods, and HTTP handlers. The possibilities with jQuery are endless.

This cookbook aims to cover some of the day-to-day tasks faced by ASP.NET developers

and how jQuery can be applied to work out the same. We will be focusing on interfacing

jQuery with ASP.NET applications and some of the amazing tasks that can be

accomplished using this powerful library. The recipes described in this book give fast and

easy solutions to some of the common encountered problems in web applications.

What This Book CoversChapter1, Working with ASP.NET Controls, describes the interfacing of standard

ASP.NET controls with the jQuery library. Controls such as TextBox, CheckBoxList,DropDownList, and Hyperlink are covered in this chapter.

Chapter 2, Validation of ASP.NET Controls, explains different client side validation

techniques that can be used with jQuery for validation of ASP.NET controls. These

validation techniques provide a substitute for server side Validation Controls.

Chapter 3, Working with GridView Control, explores different manipulations that can be

applied to the ASP.NET GridView control. You will learn to highlight rows/cells,

remove rows/ cells, use plugins, and apply animation effects using scripts.

Chapter 4, Working with Image Control, describes interesting applications of jQuery with

the ASP.NET Image control. The recipes covered demonstrate handy utilities such as

zooming, cropping, swapping, and changing the opacity of images. You will also learn to

build a photo gallery using jQuery.



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Chapter 5,Animations in ASP.NET, looks into various interesting animation effects that

can be achieved using jQuery. You will learn to apply different types of animation effects

to ASP. NET Label, Image, and Panel controls. Various effects such as fading, sliding,enlarging, and so on are covered in this chapter. The chapter also demonstrates animation

chaining and prevention of animation queue buildup.

Chapter 6,AJAX and ASP.NET (Part 1), demonstrates the making of AJAX calls using

jQuery. The chapter describes three basic techniques of sending AJAX request to the

server: via page methods, web services, and HTTP handlers. The chapter also

demonstrates the use of the Firebug add-on in Mozilla Firefox browser to investigate the

AJAX request/response.

Chapter 7,AJAX and ASP.NET (Part 2), explores more advanced applications of jQueryAJAX. The recipes in this chapter show how to work with HTML, XML, script, JSON,

JSONP, and complex data types such as objects using AJAX. You will also learn to build

a search engine using Yahoo! Search API.Chapter 8, Client Templating in ASP.NET, explains the use of Microsoft's jQuery

Templates plugin in ASP.NET websites. The chapter covers both inline as well as

external templates.



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9Creat ing Ric h Cont ent

in ASP.NET

In this chapter, we will cover:

f Creating an accordion control

f Creating a tab control

f Creating draggable controls

f Creating dialog boxes

f Using the datepicker control

f Using the progress bar control

f Using the slider control

f Adding tooltips to controls

I n t roduc t ion

Various jQuery plugins are available to add interactive features to ASP.NET web applications.

A popular plugin is the jQuery UI, built on top of the jQuery library, and consisting of handy

functionalities for creating rich content in web applications. In a nutshell, the jQuery UI library

provides the following:

f Completely confgurable widgets like accordion, tabs, progressbar, datepicker, slider,

autocomplete, dialog, and button

f Interactive features like draggable, droppable, resizable, selectable, and sortablef Advanced animation effects like show, hide, toggle, blind, bounce, explode, fade,

highlight, pulsate, puff, scale, slide, etc

f Customisable themes to suit the look and feel of your website



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Creating Rich Content in ASP.NET

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In this article, we will primarily take a look at integration of jQuery UI with ASP.NET to build rich

content quickly and easily.

Get t i ng s ta r t ed

1. Let's start by creating a new ASP.NET website Ch a p t e r 9 in Visual Studio.

Go to the download page of jQuery UI at h t t p : / / j q u e r y u i . c o m/ d o wn l o a d ,

which allows customizable downloads based on the features required in the web

application. For the purpose of this chapter, we will download the default build as

shown next:


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jQuery UI allows various custom themes. We will select the S u n n y theme for

our project:

2. Save the downloaded le. The download basically consists of the following:

c s s folder consisting of the the theme les

d e v e l o p me n t - b u n d l e folder consisting of demos, documents, raw script

les, etc.

j s folder consisting of the minied version of jQuery library and jQuery UI

3. Save the earlier mentioned css folder in the current project. Save the minied version

of jQuery UI and jQuery library in a script folder j s in the project.

4. In the recipes described in this chapter, in addition to including the jQuery library on

ASP.NET pages, also include the UI library as shown next:

< s c r i p t s r c = " j s / j q u e r y - 1 . 4 . 1 . j s " t y p e = " t e x t / j a v a s c r i p t " > < / s c r i p t >

< s c r i p t s r c = " j s / j q u e r y - u i - 1 . 8 . 9 . c u s t o m. mi n . j s " t y p e = " t e x t /

j a v a s c r i p t " > < / s c r i p t >

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5. Include the downloaded theme on the aspx pages as follows:

< l i n k h r e f = " c s s / s u n n y / j q u e r y - u i - 1 . 8 . 9 . c u s t o m. c s s " r e l = " s t y l e s h e e t "

t y p e = " t e x t / c s s " / >

Now let's move on to the recipes and explore some of the powerful functionalities of jQuery UI.

Creat ing an acc ord ion con t ro l

The jQuery accordion widget allows the creation of collapsible panels on the page without the

need for page refresh. Using an accordion control, a single panel is displayed at a time while

the remaining panels are hidden.

Gett ing Ready

1. Create a new web form Re c i p e 1 . a s p x in the current project.2. Add a main content panel to the page. Within the main panel, add pairs of headers

and subpanels as shown next:

< a s p : P a n e l i d = " c o n t e n t A r e a " r u n a t = " s e r v e r " >

< h 3 > < a h r e f = " # " > S e c t i o n 1 < / h 3 >

< a s p : P a n e l I D= " P a n e l 1 " r u n a t = " s e r v e r " >

L o r e m i p s u m d o l o r s i t a me t , c o n s e c t e t u r a d i p i s i c i n g e l i t , s e d d o

e i u s mo d t e mp o r i n c i d i d u n t u t l a b o r e e t d o l o r e ma g n a a l i q u a .

< / a s p : P a n e l >

< h 3 > < a h r e f = " # " > S e c t i o n 2 < / h 3 >


Ut e n i m a d mi n i m v e n i a m, q u i s n o s t r u d e x e r c i t a t i o n u l l a mc o l a b o r i s

n i s i u t a l i q u i p e x e a c o mmo d o c o n s e q u a t .

< / a s p : P a n e l >

< h 3 > < a h r e f = " # " > S e c t i o n 3 < / h 3 >


Du i s a u t e i r u r e d o l o r i n r e p r e h e n d e r i t i n v o l u p t a t e v e l i t e s s e

c i l l u m d o l o r e e u f u g i a t n u l l a p a r i a t u r .

< / a s p : P a n e l >

< h 3 > < a h r e f = " # " > S e c t i o n 4 < / h 3 >


E x c e p t e u r s i n t o c c a e c a t c u p i d a t a t n o n p r o i d e n t , s u n t i n c u l p a q u i

o f f i c i a d e s e r u n t mo l l i t a n i m i d e s t l a b o r u m

< / a s p : P a n e l >

< / a s p : P a n e l >

3. Add some styling to the main content panel as required:

# c o n t e n t Ar e a

{

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Chapter 9

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wi d t h : 3 0 0 p x ;

h e i g h t : 1 0 0 %;

}

Our accordion markup is now ready. We will now transform this markup into an accordion

control using the functionalities of jQuery UI.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the

a c c o r d i o n ( ) method to the main content panel:

$ ( " # c o n t e n t Ar e a " ) . a c c o r d i o n ( ) ;

Thus, the complete jQuery UI solution for the problem at hand is as follows:

< s c r i p t l a n g u a g e = " j a v a s c r i p t " t y p e = " t e x t / j a v a s c r i p t " >

$ ( d o c u me n t ) . r e a d y ( f u n c t i o n ( ) {

$ ( " # c o n t e n t A r e a " ) . a c c o r d i o n ( ) ;

} ) ;

< / s c r i p t >

How i t w orks . ..

Run the web page. The accordion control is displayed as shown in the following screenshot:

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Click on the respective panel headers to display the required panels. Note that the accordion

control only displays the active panel at a time. The remaining panels are hidden from

the user.

There 's more

For detailed documentation on the jQuery UI accordion widget, please visit h t t p : / /

j q u e r y u i . c o m/ d e mo s / a c c o r d i o n / .

See also

Creating a tab control

Creat ing a tab c on t ro l

The jQuery UI tab widget helps to create tab controls quickly and easily on ASP.NET web

pages. The tab control helps in organizing content on a page thus improving the presentation

of bulky content. With the help of jQuery UI tab widget, the content can also be retrieved

dynamically using AJAX.

In this recipe, we will see a simple example of applying this powerful widget to ASP.NET forms.

Gett ing Ready

1. Create a new web form Re c i p e 2 . a s p x in the current project.

2. Add an ASP.NET container panel to the page.

3. Within this container panel, add subpanels corresponding to the tab contents. Also

add hyperlinks to each of the subpanels.

Thus the complete aspx markup of the web form is as shown next:

< f o r m i d = " f o r m1 " r u n a t = " s e r v e r " >

< a s p : p a n e l i d = " c o n t e n t A r e a " r u n a t = " s e r v e r " >



< l i > < a h r e f = " # t a b 1 " > T a b 1 < / a > < / l i >






http://www.packtpub.com/asp-net-jquery-cookbook/bookhttp://www.packtpub.com/asp-net-jquery-cookbook/book

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Chapter 9

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< a s p : p a n e l I D = " t a b 1 " r u n a t = " s e r v e r " >

 L o r e m i p s u m d o l o r s i t a me t , c o n s e c t e t u r a d i p i s i c i n g e l i t , s e d

d o e i u s mo d t e mp o r i n c i d i d u n t u t l a b o r e e t d o l o r e ma g n a a l i q u a . 

< / a s p : p a n e l >


 Ut e n i m a d mi n i m v e n i a m, q u i s n o s t r u d e x e r c i t a t i o n u l l a mc o

l a b o r i s n i s i u t a l i q u i p e x e a c o mmo d o c o n s e q u a t . 

< / a s p : p a n e l >


 Du i s a u t e i r u r e d o l o r i n r e p r e h e n d e r i t i n v o l u p t a t e v e l i t

e s s e c i l l u m d o l o r e e u f u g i a t n u l l a p a r i a t u r . 

< / a s p : p a n e l >


 E x c e p t e u r s i n t o c c a e c a t c u p i d a t a t n o n p r o i d e n t , s u n t i n c u l p a

q u i o f f i c i a d e s e r u n t mo l l i t a n i m i d e s t l a b o r u m

< / a s p : p a n e l >

< / a s p : p a n e l >

< / f o r m >

Next, we will see how we can transform this markup into a tab control using jQuery UI.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the t a b s ( )

method to the container panel as follows:

$ ( " # c o n t e n t Ar e a " ) . t a b s ( ) ;

Thus, the complete jQuery UI solution for creating the tab control is as follows:



$ ( " # c o n t e n t Ar e a " ) . t a b s ( ) ;

} ) ;

< / s c r i p t >


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How i t w orks . ..

Run the web form. The page displays the tabbed content as follows:

Click on the respective tab headers to view the required content.

There 's more

For detailed documentation on the jQuery UI tabs widget, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / t a b s / .

See also

Creating an accordion control


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Creat ing d raggab le c on t ro ls

With the help of jQuery UI, web controls can be enhanced and interactive properties such as

draggable, droppable, resizable, sortable, and selectable can be added. In this recipe, let's

create some draggable ASP.NET panels on the web form.

Gett ing Ready


2. Add a container div area on the web form as follows:

< d i v a l i g n = " c e n t e r " i d = " c o n t e n t Ar e a " >

< / d i v >

Add the following css style to the above div area:

# c o n t e n t A r e a

{

wi d t h : 3 0 0 p x ;

h e i g h t : 1 0 0 %;

}

3. Within the container div area, add few panel controls. Create the following css class

for these panel controls:

. p a n e l

{

b o r d e r : 1 p x s o l i d ;

b o r d e r - c o l o r : Gr a y ;

wi d t h : 2 0 0 p x ;h e i g h t : 1 0 0 p x ;

p a d d i n g : 5 p x ;

}

4. Apply the above class to the panels, so that the complete aspx markup of the form is

as shown next:


< d i v a l i g n = " c e n t e r " i d = " c o n t e n t Ar e a " >

< a s p : P a n e l I D= " P a n e l 1 " r u n a t = " s e r v e r " C s s C l a s s = " p a n e l " >

L o r e m i p s u m d o l o r s i t a me t , c o n s e c t e t u r a d i p i s i c i n g

e l i t , s e d d o e i u s mo d t e mp o r i n c i d i d u n t u t l a b o r e e t d o l o r e ma g n a

a l i q u a .

< / a s p : P a n e l >


Ut e n i m a d mi n i m v e n i a m, q u i s n o s t r u d e x e r c i t a t i o n u l l a mc o

l a b o r i s n i s i u t a l i q u i p e x e a c o mmo d o c o n s e q u a t .

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< / a s p : P a n e l >


Du i s a u t e i r u r e d o l o r i n r e p r e h e n d e r i t i n v o l u p t a t e v e l i t

e s s e c i l l u m d o l o r e e u f u g i a t n u l l a p a r i a t u r .

< / a s p : P a n e l >


E x c e p t e u r s i n t o c c a e c a t c u p i d a t a t n o n p r o i d e n t ,

s u n t i n c u l p a q u i o f f i c i a d e s e r u n t mo l l i t a n i m i d e s t l a b o r u m

< / a s p : P a n e l >

< / d i v >

< / f o r m>

5. The page will display the panels as captured in the following screenshot:

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We will now add jQuery UI's draggable feature to these panels so that they can be dragged

anywhere on the page on the mousedown event.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the

d r a g g a b l e ( ) method to the panel controls. Use the css selector $ ( " . p a n e l " ) to

retrieve all the panel controls on the page:

$ ( " . p a n e l " ) . d r a g g a b l e ( ) ;

T h u s , t h e c o mp l e t e j Qu e r y s o l u t i o n i s a s f o l l o ws :



$ ( " . p a n e l " ) . d r a g g a b l e ( ) ;

} ) ;

< / s c r i p t >

How i t w orks . ..

Run the web form. Now click on any panel and drag on the screen. You will notice that the

panels can be dragged and dropped as required, as shown in the following screenshot:

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There 's more

For detailed documentation on the jQuery UI draggable feature, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / d r a g g a b l e / .

See also

Adding tooltips to controls

Creat ing d ia log boxes

Dialog boxes are an important mode of interaction with the end user. They are used to deliver

information, error, warning, or conrmation messages to the end user.

jQuery UI provides a dialog widget as an alternative to the traditional JavaScript pop-up

windows. In this recipe, let's see how to use jQuery UI dialog widget to display a basic

conrmation dialog box.

Gett ing Ready


2. Add an ASP.NET panel on the form with the required conrmation message as follows:

< a s p : P a n e l I D= " d i a l o g b o x " T o o l T i p = " Co n f i r ma t i o n " r u n a t = " s e r v e r " >

Ar e y o u s u r e y o u wa n t t o c o n t i n u e ?

< / a s p : P a n e l >

At runtime, the ASP.NET panel control is rendered as a div element

and the T o o l T i p property is rendered as t i t l e property of the div

element. Hence, we can use the T o o l T i p property to set the title of

the dialog box as done in the code snippet mentioned earlier.

3. Add a button control to the form to trigger the dialog box on the c l i c k event.

Thus, the complete aspx markup of the web form is as follows:


< d i v a l i g n = " c e n t e r " >

< a s p : P a n e l I D= " d i a l o g b o x " T o o l T i p = " C o n f i r ma t i o n "

r u n a t = " s e r v e r " >

Ar e y o u s u r e y o u wa n t t o c o n t i n u e ?

< / a s p : P a n e l >

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Chapter 9

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< a s p : Bu t t o n I D= " b t n Op e n " r u n a t = " s e r v e r " T e x t = " C l i c k t o o p e n t h e

d i a l o g b o x " / >

< / d i v >

< / f o r m>

Thus, on page load, the page will display as shown in the following screenshot:

Now, let's use jQuery UI to set the properties of the dialog box.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the d i a l o g ( )

method on the panel control:

$ ( " # d i a l o g b o x " ) . d i a l o g ( {


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2. Set the a u t o Op e n property to f a l s e , so that the dialog box is hidden until the

d i a l o g ( " o p e n " ) method is called:

a u t o Op e n : f a l s e ,

3. Set the m o d a l property to t r u e , so that the web form is disabled as long as the

dialog box is open:

mo d a l : t r u e ,

4. Set the r e s i z a b l e property to f a l s e , so that the dialog window cannot be resized

at runtime:

r e s i z a b l e : f a l s e ,

5. Set the b u t t o n s property to an array containingOK and C a n c e l buttons. Also

dene the desired action on the click event of the respective buttons. For the

purpose of this demo, we have dened . d i a l o g ( " C l o s e " ) as the custom action

for both the buttons:

b u t t o n s : {

" OK" : f u n c t i o n ( ) {

$ ( t h i s ) . d i a l o g ( " c l o s e " ) ;

} ,

" Ca n c e l " : f u n c t i o n ( ) {


}

}

} ) ;

6. Dene an event handler for the c l i c k event of the b t n Op e n button control:

$ ( " # b t n Op e n " ) . c l i c k ( f u n c t i o n ( ) {

7. Open the dialog box:

$ ( " # d i a l o g b o x " ) . d i a l o g ( " o p e n " ) ;

8. Return f a l s e so that the dialog box remains active on the page until further

user action:

r e t u r n f a l s e ;

} ) ;


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Thus, the complete jQuery solution is as follows:


$ ( d o c u me n t ) . r e a d y ( f u n c t i o n ( ) {$ ( " # d i a l o g b o x " ) . d i a l o g ( {

a u t o Op e n : f a l s e ,

mo d a l : t r u e ,

r e s i z a b l e : f a l s e ,

b u t t o n s : {

" OK" : f u n c t i o n ( ) {


} ,

" Ca n c e l " : f u n c t i o n ( ) {


}

}

} ) ;

$ ( " # b t n Op e n " ) . c l i c k ( f u n c t i o n ( ) {

$ ( " # d i a l o g b o x " ) . d i a l o g ( " o p e n " ) ;

r e t u r n f a l s e ;

} ) ;

} ) ;

< / s c r i p t >

Note that, at runtime, the dialog box is rendered

as the following div element:

Are you sure you want to continue?


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How i t w orks . ..

Run the web form. Click on the button to launch the conrmation box as follows:

On clicking either of the OK or Cancel buttons, the dialog box disappears and the page is

enabled again. Note that the dialog box can also be dragged on the page as required.

There 's more

For detailed documentation on the jQuery UI dialog widget, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / d i a l o g /.


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See also

Using the progress bar control

Using the da tep icker con t ro l

The datepicker is a popular control for date elds in online submission forms. In this recipe,

let's see how to use the jQuery UI to attach a datepicker to an ASP.NET TextBox control.

Gett ing Ready


2. Add controls to create a simple search form that accepts an input date eld

as follows:< f o r m i d = " f o r m1 " r u n a t = " s e r v e r " >

< d i v a l i g n = " c e n t e r " >

< a s p : L a b e l I D= " l b l D a t e " r u n a t = " s e r v e r " > S e a r c h b y

r e g i s t r a t i o n d a t e : < / a s p : L a b e l >

< a s p : T e x t B o x I D= " t x t Da t e " r u n a t = " s e r v e r " > < / a s p : T e x t Bo x >

< a s p : Bu t t o n I D= " b t n S u b mi t " T e x t = " S e a r c h " r u n a t = " s e r v e r " / >

< / d i v >

< / f o r m>

Thus, on page load, the web form appears as shown in the following screenshot:

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We will now use jQuery UI to attach a datepicker to the TextBox control.

How to do i t ...

f In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the

d a t e p i c k e r ( ) method to the TextBox control:

$ ( " # t x t D a t e " ) . d a t e p i c k e r ( ) ;

Thus, the complete jQuery solution for the given problem is as follows:



$ ( " # t x t D a t e " ) . d a t e p i c k e r ( ) ;

} ) ;

< / s c r i p t >

How i t w orks . ..

Run the web form. On mouseclick on the TextBox control, the datepicker is displayed as shown

in the following screenshot:

The desired date can be picked from the displayed calendar as required.

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There 's more

For detailed documentation on the jQuery UI datepicker widget, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / d a t e p i c k e r / .

See also

Creating dialog boxes

Using the p rogress bar con t ro l

jQuery UI provides a Progressbar widget to show the processing status during a wait time in an

application. In this recipe, we will learn to create a Progressbar in ASP.NET.

Gett ing Ready

1. Include an animated gif le p b a r - a n i . g i f in the images folder in the project.

2. Add a new web form Re c i p e 6 . a s p x to the current project.

3. Add an ASP.NET panel control for the progressbar as follows:

< a s p : P a n e l i d = " p r o g r e s s b a r " r u n a t = " s e r v e r " > < / a s p : P a n e l >

4. Dene some basic css style for the above as follows:

# p r o g r e s s b a r

{

wi d t h : 3 0 0 p x ;h e i g h t : 2 2 p x ;

}

5. The jQuery UI progressbar uses the jQuery UI CSS Framework for styling. Hence, to

set the background of the progressbar to the animated g i f le, add the following css

style:

. u i - p r o g r e s s b a r - v a l u e { b a c k g r o u n d - i ma g e : u r l ( i ma g e s / p b a r - a n i .

g i f ) ; }

6. Create another content panel that is initially hidden and displayed only after the

progressbar loads completely.

< a s p : P a n e l i d = " c o n t e n t A r e a " r u n a t = " s e r v e r " > P a g e s u c c e s s f u l l y

l o a d e d < / a s p : P a n e l >

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20

7. We will use the following css class to hide this panel,

. h i d e

{

d i s p l a y : n o n e ;

}

Thus, the complete aspx markup of the form is as follows:


< d i v a l i g n = " c e n t e r " >

< a s p : P a n e l i d = " p r o g r e s s b a r " r u n a t = " s e r v e r " > < / a s p : P a n e l >

< a s p : P a n e l i d = " c o n t e n t A r e a " r u n a t = " s e r v e r " > P a g e s u c c e s s f u l l y

l o a d e d < / a s p : P a n e l >

< / d i v >

< / f o r m>

Now, we will look at the jQuery solution for applying the Progressbar widget to the

ASP.NET panel.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, hide the

display message:

$ ( " # c o n t e n t Ar e a " ) . a d d Cl a s s ( " h i d e " ) ;

2. Initialise a counter:

v a r c n t = 0 ;

3. Dene the maximum value of the counter:

v a r ma x C n t = 1 0 0 ;

4. Use the JavaScript timer function s e t I n t e r v a l ( ) to dene the timeout interval and

the callback function after each interval:

v a r i d = s e t I n t e r v a l ( s h o wp r o g r e s s , 1 0 ) ;

5. Now, dene the previous callback function:

f u n c t i o n s h o wp r o g r e s s ( ) {

6. Check if the current value of the counter is less than or equal to the maximum

allowable value:

i f ( c n t < = ma x Cn t ) {

7. If yes, then apply the p r o g r e s s b a r ( ) function with the current counter value:$ ( " # p r o g r e s s b a r " ) . p r o g r e s s b a r ( {

v a l u e : c n t

} ) ;

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8. Increment the counter:

c n t + + ;

}

9. If the current value of the counter is greater than the maximum value, clear the timer

using the respective ID:

e l s e {

c l e a r I n t e r v a l ( i d ) ;

10. Show the display message:

$ ( " # c o n t e n t Ar e a " ) . r e mo v e Cl a s s ( " h i d e " ) ;

11. Hide the progress bar:

$ ( " # p r o g r e s s b a r " ) . a d d Cl a s s ( " h i d e " ) ;

}

}

Thus, the complete jQuery solution is a follows:



$ ( " # c o n t e n t Ar e a " ) . a d d Cl a s s ( " h i d e " ) ;

v a r c n t = 0 ;

v a r ma x C n t = 1 0 0 ;

v a r i d = s e t I n t e r v a l ( s h o wp r o g r e s s , 1 0 ) ;

f u n c t i o n s h o wp r o g r e s s ( ) {

i f ( c n t < = ma x Cn t ) {$ ( " # p r o g r e s s b a r " ) . p r o g r e s s b a r ( {

v a l u e : c n t

} ) ;

c n t + + ;

}

e l s e {

c l e a r I n t e r v a l ( i d ) ;

$ ( " # c o n t e n t A r e a " ) . r e mo v e Cl a s s ( " h i d e " ) ;

$ ( " # p r o g r e s s b a r " ) . a d d Cl a s s ( " h i d e " ) ;

}

}

} ) ;

< / s c r i p t >


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22

In this solution, we have used the JavaScript timer s e t I n t e r v a l ( c u s t o mF u n c t i o n ,

t i me o u t ) to call a custom function after the timeout (in milliseconds). Important points to

note are:

f The setInterval method returns a numeric number, i d to track the timeout. This ID

can be later used to clear the timer.

f The timer calls the custom function s h o wp r o g r e s s ( ) repeatedly after every timeout

interval until the c l e a r I n t e r v a l ( i d ) is called.

f After every timeout, we will increment the variable c n t by 1 and apply it to the

progressbar.

f When c n t reaches ma x Cn t , the progressbar loads completely.

How i t w orks . ..

Run the web form. You will see that the progressbar loads in steps, as shown in thefollowing screenshot:



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After the load is complete, the progressbar is hidden and the content panel is displayed

instead, as follows:

There 's more

For detailed documentation on the jQuery UI progressbar widget, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / p r o g r e s s b a r / .

See also

Using the slider control

Using the s l ider con t ro l

The slider control is useful in various applications requiring user interaction such as volume

control, color pickers, etc. In this recipe, we will apply the jQuery UI slider widget to create ascrollable div.


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24

Gett ing Ready

1. Create a new web form Re c i p e 7 . a s p x in the current project.2. Create nested div areas on the page as follows:

< d i v i d = " o u t e r Co n t e n t " >

< d i v i d = " i n n e r Co n t e n t " >

< / d i v >

< / d i v >

3. Since we want to scroll the inner content area, we will set the width of the

i n n e r Co n t e n t to be longer than that of the o u t e r Co n t e n t . Hence, defne the

following styles on the respective div areas:

# o u t e r Co n t e n t

{

wi d t h : 3 0 0 p x ;

h e i g h t : 1 0 0 p x ;o v e r f l o w: h i d d e n ;


}

# i n n e r C o n t e n t

{

wi d t h : 5 0 0 p x ;

p o s i t i o n : r e l a t i v e ;

l e f t : 5 p x ;

o v e r f l o w: a u t o ;

}

4. Now create a div element to which we can apply the slider as follows:

< d i v i d = " s l i d e r " > < / d i v >

Thus, the complete aspx markup of the web form is as follows:


< d i v a l i g n = " c e n t e r " >

< d i v i d = " s l i d e r " > < / d i v >

< d i v i d = " o u t e r Co n t e n t " >

< d i v i d = " i n n e r C o n t e n t " >

L o r e m i p s u m d o l o r s i t a me t , c o n s e c t e t u r a d i p i s i c i n g e l i t ,

s e d d o e i u s mo d t e mp o r i n c i d i d u n t u t l a b o r e e t d o l o r e ma g n a a l i q u a .

Ut e n i m a d mi n i m v e n i a m, q u i s n o s t r u d e x e r c i t a t i o n u l l a mc o l a b o r i s

n i s i u t a l i q u i p e x e a c o mmo d o c o n s e q u a t . Du i s a u t e i r u r e d o l o r i n

r e p r e h e n d e r i t i n v o l u p t a t e v e l i t e s s e c i l l u m d o l o r e e u f u g i a t n u l l a

p a r i a t u r . E x c e p t e u r s i n t o c c a e c a t c u p i d a t a t n o n p r o i d e n t , s u n t i n

c u l p a q u i o f f i c i a d e s e r u n t mo l l i t a n i m i d e s t l a b o r u m< / d i v >

< / d i v >

< / d i v >

< / f o r m>


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Chapter 9

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Let's take a look at the adopted approach for scrolling the inner div based on the position of

the slider:

1. First determine the amount of scrollable area available:

S c r o l l a b l e Ar e a = ( Wi d t h o f I n n e r Di v ) ( Wi d t h o f O u t e r Di v )

2. Now, apply the Slider value to this Scrollable area to get the left scroll position:

L e f t S c r o l l P o s i t i o n = ( S l i d e r Va l u e * S c r o l l a b l e Ar e a ) / 1 0 0

Since, the slider value is a percentage, in the above formula we divide by 100.

3. Now, set the scrollLeft property of the outer div to the above value to scroll the inner

div as per the slider.

Next, let's use jQuery UI to implement the slider using the earlier mentioned approach.

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the s l i d e r ( )

function on the slider panel:

$ ( " # s l i d e r " ) . s l i d e r ( {

2. Dene the minimum value of the slider:

mi n : 0 ,

3. Dene the maximum value of the slider:

ma x : 1 0 0 ,

4. Set a n i ma t e to t r u e to slide smoothly on mouse click:

a n i ma t e : t r u e ,

5. Dene the callback function on the slide event. This event is triggered on every

mouse move during the slide:

s l i d e : f u n c t i o n ( e , u i ) {

6. As explained earlier, get the scrollable width as follows:

v a r i S c r o l l Wi d t h = $ ( " # i n n e r C o n t e n t " ) . wi d t h ( ) -

$ ( " # o u t e r C o n t e n t " ) . wi d t h ( ) ;

7. Set the scrollLeft property by computing the left scroll position:

$ ( " # o u t e r Co n t e n t " ) . a t t r ( { s c r o l l L e f t : ( u i . v a l u e * 0 . 0 1 *

i S c r o l l Wi d t h ) } ) ;

} ,


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26

8. Dene the callback function on the change event. This event is triggered on slide stop

or if the value is changed programmatically:

c h a n g e : f u n c t i o n ( e , u i ) {

9. Similar to the slide event, calculate the scrollable width:



10. Animate the scrollLeft property of the outer panel:

$ ( " # o u t e r C o n t e n t " ) . a n i ma t e ( { s c r o l l L e f t : ( u i . v a l u e * 0 . 0 1 *

i S c r o l l Wi d t h ) } , " s l o w" ) ;

}

} ) ;

Thus, the complete jQuery UI solution for the given problem is as follows:

< s c r i p t l a n g u a g e = " j a v a s c r i p t " t y p e = " t e x t / j a v a s c r i p t " >$ ( d o c u me n t ) . r e a d y ( f u n c t i o n ( ) {

$ ( " # s l i d e r " ) . s l i d e r ( {

mi n : 0 ,

ma x : 1 0 0 ,

a n i ma t e : t r u e ,

s l i d e : f u n c t i o n ( e , u i ) {



$ ( " # o u t e r C o n t e n t " ) . a t t r ( { s c r o l l L e f t : ( u i . v a l u e *

0 . 0 1 * i S c r o l l Wi d t h ) } ) ;

} ,

c h a n g e : f u n c t i o n ( e , u i ) {



$ ( " # o u t e r C o n t e n t " ) . a n i ma t e ( { s c r o l l L e f t : ( u i . v a l u e

* 0 . 0 1 * i S c r o l l Wi d t h ) } , " s l o w" ) ;

}

} ) ;

} ) ;

< / s c r i p t >


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How i t w orks . ..

Run the page. Drag the slider handle to display the scrolling content as shown next:

There 's more

For detailed documentation on the jQuery UI slider widget, please visit

h t t p : / / j q u e r y u i . c o m/ d e mo s / s l i d e r / .

See also

Using the progressbar control

Add ing too l t ips t o con t ro ls

jQuery UI version 1.8 does not have inbuilt support for tooltips. The widget will only be

released as part of jQuery UI version 1.9.

In this recipe, we will explore an alternative tooltip plugin for creating tooltips in

ASP.NET pages.


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28

Gett ing Ready

1. Create a new web form Re c i p e 8 . a s p x in the current project.2. Download the jQuery tooltip plugin from h t t p : / / b a s s i s t a n c e . d e / j q u e r y -

p l u g i n s / j q u e r y - p l u g i n - t o o l t i p / .

3. Save the above plugin le in the script folder j s in the project.

4. On the web form, include the stylesheet as well as the plugin as follows:

< l i n k h r e f = " c s s / j q u e r y . t o o l t i p . c s s " r e l = " s t y l e s h e e t " t y p e = " t e x t /

c s s " / >

< s c r i p t s r c = " j s / j q u e r y - 1 . 4 . 1 . j s " t y p e = " t e x t / j a v a s c r i p t " > < /

s c r i p t >

< s c r i p t s r c = " j s / j q u e r y . t o o l t i p . j s " t y p e = " t e x t / j a v a s c r i p t " > < /

s c r i p t >

5. Add a simple login form to the page.6. Add s p a n areas containing the tooltip text as follows:

< s p a n c l a s s = " t o o l t i p " t i t l e = " P l e a s e u s e y o u r r e g i s t e r e d e ma i l

a d d r e s s " > ? < / s p a n >

< s p a n c l a s s = " t o o l t i p " t i t l e = " P l e a s e e n t e r y o u r p i n n u mb e r

h e r e " > ? < / s p a n >

where, the t o o l t i p css class is dened as follows:

. t o o l t i p

{


b a c k g r o u n d - c o l o r : S i l v e r ;c u r s o r : p o i n t e r ;

wi d t h : 1 5 p x ;

}

Thus, the complete aspx markup of the page is as follows:


< d i v a l i g n = " c e n t e r " i d =" c o n t e n t Ar e a " >

< f i e l d s e t s t y l e = " wi d t h : 3 5 0 p x ; h e i g h t : 1 4 0 p x ; " >

< t a b l e b o r d e r = " 0 " c e l l p a d d i n g = " 3 " c e l l s p a c i n g = " 3 " >

< t r > < t d c o l s p a n = " 2 " c l a s s = " h e a d e r " > L OGI N US ERS < / t d > < / t r >

< t r >

< t d a l i g n = " r i g h t " >

< a s p : L a b e l I D= " l b l Us e r Na me " r u n a t = " s e r v e r "

T e x t = " Us e r Na me : " > < / a s p : L a b e l >

< / t d >

< t d a l i g n = " l e f t " >

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Chapter 9

29

< a s p : T e x t Bo x I D = " t x t Us e r Na me " r u n a t = " s e r v e r " > < /

a s p : T e x t Bo x >

< s p a n c l a s s = " t o o l t i p " t i t l e = " P l e a s e u s e y o u r

r e g i s t e r e d e ma i l a d d r e s s " > &n b s p ; ? &n b s p ; < / s p a n >< / t d >

< / t r >

< t r >

< t d a l i g n = " r i g h t " >

< a s p : L a b e l I D= " l b l P a s s wo r d " r u n a t = " s e r v e r "

T e x t = " P a s s wo r d : " > < / a s p : L a b e l >

< / t d >

< t d a l i g n = " l e f t " >

< a s p : T e x t Bo x I D = " t x t P a s s wo r d " r u n a t = " s e r v e r "

T e x t Mo d e = " P a s s wo r d " > < / a s p : T e x t Bo x >

< s p a n c l a s s = " t o o l t i p " t i t l e = " P l e a s e e n t e r y o u r p i n

n u mb e r h e r e " > &n b s p ; ? &n b s p ; < / s p a n >

< / t d >

< / t r >< t r >

< t d a l i g n = " c e n t e r " c o l s p a n = " 2 " >

< a s p : Bu t t o n I D= " b t n S u b mi t " r u n a t = " s e r v e r "

T e x t = " S u b mi t " / > &n b s p ;

< a s p : Bu t t o n I D= " b t n Re s e t " r u n a t = " s e r v e r "

T e x t = " R e s e t " / >

< / t d >

< / t r >

< / t a b l e >

< / f i e l d s e t >

< / d i v >

< / f o r m>

On page load, the web form appears as displayed in the following screenshot:

Let's see how to use the tooltip plugin for displaying the tooltip text on hover.

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30

How to do i t ...

1. In the d o c u me n t . r e a d y ( ) function of the jQuery script block, apply the t o o l t i p ( ) method to all the span elements:

$ ( " s p a n " ) . t o o l t i p ( ) ;

Thus, the complete jQuery solution is as follows:



$ ( " s p a n " ) . t o o l t i p ( ) ;

} ) ;

< / s c r i p t >

Note that be applying the . t o o l t i p ( ) method on the span areas, we can

create the required tooltips. The t i t l e text is displayed as the tooltip text.

How i t w orks . ..

Run the web page. Mouseover on the ? icon. You will notice that the tooltip is displayed as

shown in the following screenshot:


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There 's more

For detailed documentation on the jQuery Tooltip plugin, please visit

h t t p : / / d o c s . j q u e r y . c o m/ P l u g i n s / To o l t i p .

See also

Creating dialog boxes



37/37

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