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You also saw how to use the API to programmatically create contact persons and their contact data and save those in a database. When that you don't want to update when you're changing an existing item.However, writing explicit code to work with your business objects isn't always fun, and can be a cumbersome task. This way, the drop down gets filled with the values from the enum type automatically. If you'd create a brand new item using a default constructor and then set all the properties, this property might either default to or get today's date. To make it a bit easier to hide or show anything related to an e-mail address, an address or a phone number, I wrapped all the functionality in a number of different views. - I have written a new series on N-Layer design targeting ASP. How do these business objects interact with other parts of the system? As other alternatives, you could drop the entire Calendar and use three drop down instead for the year, month and day or use the new Calendar control from the Ajax Toolkit that features some cool ways to browse through the calendar.
Part two showed you how to code the classes that were designed in part one. However, for the purpose of demonstrating n-layer design, the Calendar control is fine.You saw how to implement the data access methods and database code and how the various classes were able to work together. Once the date has been checked, the code determines whether we're editing an existing item, or creating a new one. This is part three of the article series "Building Layered Web Applications" that shows you how to build N-Layer applications with Microsoft ASP. These articles teach you how to design, build and use custom business objects in your web application. For more information about the translation, check out this blog post.
- I have written a new series on N-Layer design as a major follow up to this one. Part one dealt with the design of the application: what business objects do you need to fulfill the requirements of the application. Note that the current implementation for the calendar isn't very user-friendly for a birth date. This means you'll need to click around 420 times (35 * 12) to get at the right month back in 1971. The target audience for this series are developers that are ready to make the switch from using controls with custom business objects. NET 2 and C# is necessary while some knowledge about object oriented design certainly helps. Save(my Contact Person); End Editing(); } } when no date has been selected.