Home > Articles > Web Development > ASP.NET

This chapter is from the book

This chapter is from the book

Trying Silverlight Demos

The cool thing with Silverlight is that it’s so easy to deploy: Simply put the files on a web server, and anyone in the world with a Silverlight-capable browser can see the applications.

The applications developed by Microsoft for demo purposes are also available online. Additionally, third-party developers can also publish their own sample applications to the Silverlight.net website. As mentioned previously Microsoft used two demo applications when they first introduced Silverlight to the public: the Chess application and the Silverlight Airline sample.

Playing Chess Against Silverlight

At the time of writing, the Chess demo (see Figure 1.4) is not available yet for Silverlight 2. You can, however, see a video illustrating this application at http://on10.net/blog/tina/Microsoft-Silverlight-Chess. Also, keep checking the Silverlight.net gallery where the demo and its source code should be posted soon.

Figure 1.4

Figure 1.4 Chess application

In this application, you get a chance to play against the machine: The Human button is selected on the bottom. On the top, you can choose to play against another human (booooring), against JavaScript (remember, JScript is Microsoft’s name for its implementation of the technology) or against .NET.

The implementation for the chess engine is exactly the same in JavaScript and in .NET. So the most interesting thing to do in that application is to let JavaScript play against .NET:

  1. On top, make sure that the .NET button is selected.
  2. On the bottom, select the JScript button.
  3. Observe how both engines are playing against each other. The most interesting data is the number of nodes per second calculated by each engine. This is an indication of how fast each engine can process data. Typically, .NET calculates approximately 1,000 times faster than JavaScript!

Running this application always leads to the same result: .NET wins over JavaScript, because it is just so much faster. This is a good proof (if it was needed) of some of the advantages we will encounter when we use .NET for advanced calculations instead of the JavaScript engine.

Planning Your Trips with the Airline Application

The airline application shown in Figure 1.5 was also shown on stage at MIX07 and presents what could be an airline reservation system in the (near) future. Here too, the demo is not yet available for Silverlight 2 at the time of writing but should be updated soon in the Silverlight.net gallery. A video showing this application is available at http://on10.net/blogs/tina/Microsoft-Silverlight-Airlines.

Figure 1.5

Figure 1.5 Airline application

  1. Click and hold the departure city. Then, still holding down the button, move the cursor to the target city. You can release the mouse now.
  2. Select a date for your trip in the Calendar on the right.
  3. The system calculates a number of possible itineraries for your trip. They are shown under the map. Pass your mouse cursor over one itinerary to see it drawn on the screen, and to see a small plane fly from city to city.

This example is interesting, because strictly speaking, Silverlight doesn’t offer new functionality here. Online reservation systems are already available today. However, the user interface is better with Silverlight and makes the user experience better and more attractive.

DeepZooming into the Hard Rock Café

At MIX08, probably the most exciting demo was given by the Hard Rock Café and its memorabilia collection of rock souvenirs: How would you like to be able to see high resolution pictures of all the souvenirs normally exposed in various Hard Rock Cafés around the globe (see Figure 1.6)? Even better, how would you like to be able to select them by artist, year, type, and so on? And the most awesome feature of all: Zoom smoothly into the pictures until you are able to see every detail, like small scratches or a handwritten dedication on a guitar! Navigate to http://memorabilia.hardrock.com to try it yourself.

Figure 1.6

Figure 1.6 Hard Rock Memorabilia

This application is enabled by a feature introduced in Silverlight 2, named DeepZoom. A very high resolution picture is prepared by a tool and divided in multiple, lower-resolution pictures. A Silverlight control is loading these images dynamically (according to the level of zoom chosen) and displays them. Additionally, you can pan the image simply by clicking and dragging the mouse, with a lifelike movement. All these seemingly very complex features are made rather easy thanks to Silverlight 2 (though one should not underestimate the value of the developers and designers having created this application!).

Finding More Demos

Many more samples and demos are available online. Make sure to browse through the Silverlight.net gallery and play with demos to see what Silverlight can do at http://silverlight.net/community/communitygallery.aspx.

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020