By Vincent Varallo
The ASP.NET company software improvement publication, that's a part of the Problem/Design/Solution sequence, is setup as a booklet that illustrates the matter first, then strikes to the layout (and appears at a variety of layout possibilities), and winds up with the answer to enforce. The pattern venture for this booklet is a time-tracking chance, an program to log employee's time.
Each bankruptcy of the e-book seems to format the basics of a enterprise software, beginning with the information entry, company, and presentation layers. the remainder of the booklet is spent taking a look at a number of the good points that the applying wanted (exception dealing with, defense, workflow, etc.). lots of the situations within the chapters use a code-specific implementation to fixing the matter, instead of utilizing different instruments on hand to builders (for example, the workflow bankruptcy does not leverage home windows Workflow Foundation). notwithstanding there are a number of instruments used, like Crystal studies and firm Library.
The booklet has an enticing strategy in the way it implements the company good judgment; enterprise functions are a lot diversified than own websites and different software varieties simply because they rely on the luck in their company ideas. that's one of many focuses of the ebook, establishing the way to constitution your code so you may possibly deal with many of the company wishes of the application.
The chapters that create particular positive aspects for the applying (reporting, workflow, etc.) use a code-specific method of developing those good points. The booklet lays out the alterations to the database and information version, illustrates the saved systems for the swap, after which strikes into the layout answer. each one new characteristic has a brand new ASP.NET web page that he demonstrates absolutely besides any alterations to kinds, grasp pages, and so on. every one ebook discusses the bankruptcy to the fullest element, from the proc to the completed solution.
The type of the publication mostly follows the reason of the company challenge at the start. whilst the e-book illustrates code, the writer indicates the code first, and follows up with an evidence of the answer. within the layout part, the ebook does speak about a number of the elements that it does use to accomplish the answer (such as Crystal studies for reporting and firm Library for exception handling).
While i do not comprehend that i'd use an identical structure, I do like a number of the positive aspects he applied within the app and glance to determine how i'll make the most of this for my very own improvement.
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Additional info for ASP.NET 3.5 Enterprise Application Development with Visual Studio 2008: Problem Design Solution (Wrox Programmer to Programmer)
DataContext object. Think of a DataContext object as a connection object on steroids. You’ll use the DataContext object every time you want to interact with the database. It has one member variable called MappingSource and numerous constructors. The constructor optionally takes a connection string or a connection object that supports the IDBConnection interface. config file and pass it into the DataContext. All the constructors call a method called OnCreated. ” If you expand the region you will see the following.
An entity object can be populated in the DAL by using a DataReader and then the entity object can be passed back to the BLL. This enables the DAL to remain in control of the connection, which is a good thing. You could also use structs, rather than classes, to represent the data, as structs are lighter than classes because they are value types, whereas classes are reference types. Entity objects are also easier to read, and they support IntelliSense because the properties are strongly typed. A disadvantage of entity objects is that you have to create them manually.
The rest are self-explanatory. Notice that each property has its specific attributes defined for you automatically, and some have more than others. OnFIELDNAMEChanged(); where FIELDNAME is the property being changed. The OnFIELDNAMEChanging and OnFIELDNAMEChanged methods were defined earlier as partial methods. You could validate the data as it is passed into the property and throw an exception if someone tried to enter bad data. com/ Chapter 2: The Data Access Layer The SendPropertyChanging and SendPropertyChanged methods are called as part of the implemented interfaces for this class.