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Notice the code marked in bold. After declaring the instance of the XmlSerializer class, it wires up three event handlers UnknownAttribute, UnknownElement, and UnknownNode that simply display a message box showing the name of the attribute, element, or node and the line number at which the attribute, element, or node is encountered. Notice how the event argument parameter is used to extract information about the unexpected content. To test these events, modify the serialized XML file manually as shown in Listing 8-5. Listing 8-5. Modifying the Serialized XML Manually < xml version="1.0" > <Employee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" EmpCode="E001"> <EmployeeID>1</EmployeeID> <FirstName>Nancy</FirstName> <LastName>Davolio</LastName> <HomePhone>(206) 555-9857</HomePhone> <Notes>includes a BA in psychology from Colorado State University in 1970. She also completed "The Art of the Cold Call." Nancy is a member of Toastmasters International.</Notes> <OfficePhone>(206) 555-1234</OfficePhone> </Employee> Notice the markup in bold. We have added an EmpCode attribute and an <OfficePhone> element manually to the XML file. Save the file and run the application. This time when you click the Deserialize button, you will see message boxes informing you of the discrepancies. Figure 8-3 shows one such message box.





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Although it is not required to have a custom domain used with your Blogger blog, many users want to set one up at some point after the blog is created. There are many domain registrar companies in which you can purchase a domain name, however one of the most convenient is purchasing one from within Blogger through Google Apps. The steps for buying and setting up a custom domain within Blogger are detailed in the first exercise. When the set up is complete, your blog readers can visit your blog using the original BlogSpot address, or by using the new domain name with or without the leading www in the Internet address. In the 6, you will learn about Blogger s image storage and management, and how and where Blogger stores your blog s images. These concepts need to be addressed and understood before advancing through the remainder of this book.

Declines the transaction Authorizes with a random authorization code Declines the transaction Authorizes with a random authorization code Authorizes with a random authorization code

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In the preceding example, we serialized a simple type; the members of the Employee class were simple types such as an integer and a string. However, real-world classes are often complex ones. They may contain members that are class types, enumerated types, or even arrays. The XmlSerializer class provides support for such complex types, and that is what you are going to see in the next example.

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The user interface of the application now changes as shown in Figure 8-4.

If you use one of the cards whose transactions get authorized, you ll be able to finish test transactions successfully, and the audit trail will look like Figure 20-2.

Moving from the test account to the live one is now simply a matter of replacing the DataCash information in web.config. After you have set up a merchant bank account, you can use these details to set up a new DataCash account, obtaining new client and password data along the way. You also need to change the URL that you send data to it needs to be the live server. Other than removing the test user accounts from the database, this is all you need to do before exposing your newly completed e-commerce application to customers.

I m sure you have created a few of your own posts and inserted a few images either as part of your posts or in your blog s sidebar. Where are they being stored What happens when you delete an image How many images can you post, or is there a storage size limitation These questions and more will be addressed in this chapter. You will be using Google s Picasa Web Albums and Google Sites to store and use images for your blog, both of which are free services. In this chapter, you will view where they are stored and how to manage them, and also create additional photo albums. In addition, you may want to use images on your blog that you do not want stored in an album or taking up your Blogger image storage space. In this case, you will learn how to upload images to Google Sites and how to use and reference those online images.

Figure 8-4. Application for illustrating XML serialization of complex types The first five text boxes remain the same as in the previous example. However, six text boxes and one combo box are new. The newly added text boxes capture the email, street, city, state, country, and postal code information of the employee. The combo box captures the employee type (permanent or contract). To store the address information of employees, you need to add a property called Address to the Employee class. The Address property itself is a class called Address, as shown in Listing 8-6. Listing 8-6. The Address Class public class Address { private string private string private string private string private string

Summary

strStreet; strCity; strState; strCountry; strPostalCode;

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