By Vincent Varallo
The ASP.NET firm software improvement ebook, that is a part of the Problem/Design/Solution sequence, is setup as a e-book that illustrates the matter first, then strikes to the layout (and appears at a number of layout possibilities), and finally ends up with the answer to enforce. The pattern undertaking for this publication is a time-tracking chance, an program to log employee's time.
Each bankruptcy of the e-book appears to be like to format the basics of a enterprise software, beginning with the information entry, enterprise, and presentation layers. the remainder of the booklet is spent some of the positive aspects that the applying wanted (exception dealing with, safeguard, workflow, etc.). lots of the eventualities 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 company Library.
The e-book has an enticing process in the way it implements the company good judgment; company purposes are a lot various than own sites and different software varieties simply because they rely on the luck in their company principles. that's one of many focuses of the ebook, constructing how one can constitution your code so you may well deal with many of the company wishes of the application.
The chapters that create particular positive factors for the appliance (reporting, workflow, etc.) use a code-specific method of developing those good points. The ebook lays out the alterations to the database and information version, illustrates the kept 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 types, grasp pages, and so on. each one ebook discusses the bankruptcy to the fullest element, from the proc to the completed solution.
The variety of the booklet more often than not follows the reason of the company challenge first and foremost. while the booklet illustrates code, the writer exhibits the code first, and follows up with a proof of the answer. within the layout part, the e-book does speak about some of the elements that it does use to accomplish the answer (such as Crystal studies for reporting and company Library for exception handling).
While i do not be aware of that i might use an analogous structure, I do like many of the beneficial properties he applied within the app and glance to determine how i could make the most of this for my very own improvement.
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Extra info for ASP.NET 3.5 Enterprise Application Development with Visual Studio 2008: Problem Design Solution (Wrox Programmer to Programmer)
Cs file contains all the classes that are automatically created for you. com/ Chapter 2: The Data Access Layer Figure 2-3 The ORM Designer should appear and be the active window. 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.
You get this error because you need to set the Version field’s value to the original value of the record when it was first retrieved. This means you need to come up with a caching mechanism or find some place to persist the version information while the user is viewing the record. You would need to do this for the InsertDate and InserENTUserAccountId fields too because you wouldn’t want them to ever change. An easy place to store this information is in the ViewState. ChangeTracker+StandardChangeTracker’ in Assemble .
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.