ASP.NET PDF Viewer using C#, VB/NET

The variables used in the automatically generated project file from Listing 15-1 are not the only ones available. Actually, there are more than 100 variables used by QMake far too many to cover in this text. Instead of covering them all, the most useful ones are listed here: DEFINES: This variable contains the preprocessor defines that will be used to configure the project. There are many defines that can be used to fine-tune the resulting Qt application. For instance, QT_NO_DEBUG_OUTPUT is used to turn off qDebug messages, and QT_DEBUG_PLUGINS turns on debugging information concerning the loading of plugins. These defines are passed to the compiler, so you can use them in your code. LIBS: Use this variable to link against libraries. Use the -Lpath command to add a path to the list of directories to search for libraries. Then use -llibrary (dash, lower case L, library name) to add a reference to the actual library. To link against the library /home/e8johan/mylib/libthelibrary.a, the project file line should read LIBS += -L/home/e8johan/mylib lthelibrary. QMake takes care of converting these flags (-L and -l) to the currently used compiler.

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}

Output: Customer in XML: < xml version="1.0" encoding="utf-16" > <Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <FirstName>Orlando</FirstName> <LastName>Gee</LastName> <EmailAddress>orlando0@hotmail.com</EmailAddress> </Customer> Customer in Object: Orlando Gee Email: orlando0@hotmail.com

To serialize an object using .NET XML serialization, you need to create an XmlSerializer object:

to the web service using Visual Studio NET or the wsdlexe tool, and implement this proxy within your application With Atlas, you can now have a pure client-side implementation of a web service consumer When you build your Atlas client, you can use the <Services> tag within the ScriptManager and embed an <atlas:ServiceReference> element in this to point to your web service You ll see this in action in a demonstration shortly Web services are ideally suited for business logic that has to be shared amongst a number of applications For example, in this case, I will show how to write a web service that calculates the value of a car based on its make and model and how much it has depreciated in value because of its age.

XmlSerializer serializer = new XmlSerializer(typeof(Customer));

DESTDIR: If you need to control where the resulting file ends up, you can use this variable. For example, by setting it to ../bin, the resulting file will be placed in the bin directory on the same directory level as the directory containing the project file. When you build a Qt application, you end up with lots of intermediate files. Designer user interfaces are compiled into header files by the user interface compile, header files are compiled into C++ source files by the meta-object compiler, and all C++ source files are compiled into object files. Putting these files in the same directory as your source and header files can lead to a rather messy situation. Sure, running make clean will clear it up, but you can do better using the following variables: OBJECTS_DIR: Controls where the intermediate object files are placed. UI_DIR: Controls where the intermediate files generated by the user interface compiler are placed. MOC_DIR: Controls where the intermediate files produced by the meta-object compiler are placed. A good policy is to place the object files in ./obj, the uic files in ./ui, and the moc files in the ./moc directory by adding the following lines to your project file: OBJECTS_DIR = obj UI_DIR = ui MOC_DIR = moc

You must pass in the type of the object to be serialized to the XmlSerializer constructor. If you don t know the object type at design time, you can discover it by calling its GetType() method:

XmlSerializer serializer = new XmlSerializer(c1.GetType());

You also need to decide where the serialized XML document should be stored. In this example, you simply send it to a StringWriter:

Note After these lines are added, QMake will attempt to create the directories automatically. On Unix

StringWriter writer = new StringWriter(); serializer.Serialize(writer, c1); string xml = writer.ToString(); Console.WriteLine("Customer in XML:\n{0}\n", xml);

The resultant XML string is then displayed on the console:

< xml version="1.0" encoding="utf-16" > <Customer xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <FirstName>Orlando</FirstName> <LastName>Gee</LastName> <EmailAddress>orlando0@hotmail.com</EmailAddress> </Customer>

platforms it is common to use the directories .obj, .ui, and .moc instead because they are hidden by default.

Depreciation is interesting here, because it is date-specific, and hence it is ideal for a hosted business analytic and therefore a web service This simple algorithm deducts $2,000 in value for each year the car has aged (a real service would have a far more complex formula) Now you may think you can do the same thing from a client-side application, but the problem with this approach is that everybody has a different clock on their computer, and the time-based calculation of the value should come from a master clock; hence, having a master process to manage the calculation makes sense, and web services are the ideal technology on which to do it, because they are designed for remote accessibility So, to see this in action, you should first implement a web service Add a new web service to your project, and call it CarServiceasmx.