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 number of layout possibilities), and winds 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 publication appears to structure the basics of a enterprise software, beginning with the information entry, enterprise, and presentation layers. the remainder of the ebook is spent a number of the positive aspects that the applying wanted (exception dealing with, safety, workflow, etc.). many of the situations within the chapters use a code-specific implementation to fixing the matter, instead of utilizing different instruments to be had to builders (for example, the workflow bankruptcy does not leverage home windows Workflow Foundation). although there are a couple of instruments used, like Crystal reviews and firm Library.
The ebook has an enticing process in the way it implements the company common sense; company functions are a lot diversified than own sites and different program forms simply because they rely on the luck in their company principles. that's one of many focuses of the ebook, establishing find out how to constitution your code so you may perhaps deal with a few of the company wishes of the application.
The chapters that create particular gains for the appliance (reporting, workflow, etc.) use a code-specific method of developing those beneficial properties. The booklet lays out the adjustments to the database and knowledge version, illustrates the kept approaches for the switch, after which strikes into the layout resolution. every one new function has a brand new ASP.NET web page that he demonstrates totally in addition to any alterations to kinds, grasp pages, and so forth. each one booklet discusses the bankruptcy to the fullest aspect, from the proc to the completed solution.
The form of the booklet ordinarily follows the reason of the enterprise challenge in the beginning. whilst the e-book 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 a few of the parts that it does use to accomplish the answer (such as Crystal reviews for reporting and company Library for exception handling).
While i do not understand that i'd use a similar structure, I do like many of the positive factors he applied within the app and glance to work out how i could make the most of this for my very own improvement.
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Additional resources for ASP.NET 3.5 Enterprise Application Development with Visual Studio 2008: Problem Design Solution (Wrox Programmer to Programmer)
Again, you can implement these as either dynamic SQL or stored procedures. You also have the option to return the records either in a disconnected object, which is a DataSet, or in a connected object, which is a DataReader. The decision is solely based on what you plan to do with the data. CommandText = “SELECT Name FROM UserAccount”; Before executing this query, you can choose whether to return a DataReader or a DataSet. com/ Chapter 2: The Data Access Layer A DataReader is the fastest type of object to return multiple records and is a forward-only, connected cursor to the database.
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. Tools are available that will do this or you can roll your own tool to create entity classes, but it still adds another level of complexity to your project. You are also responsible for maintaining these objects when a change is made to the underlying table. In addition, you still have to cast the fields to properties, just as you do for DataReaders and DataSets; and these types of exceptions are only caught at runtime, not design time.
In addition, you’ll never have to write another custom entity class again to pass data back to the business logic layer. It’s all built into LINQ to SQL. Happy coding, my friend! com/ 2 The Data Access Layer Before starting to develop the functionality of the application that is specific to Mary’s requirements, the focus will be on building the overall architecture for the three layers in the application. The architecture is independent of the requirements and provides all developers working on the project with a standard way of presenting data to the user, validating data, and saving data to the database.