Gridview rowupdating event handling

Posted by / 02-Sep-2015 04:15

Gridview rowupdating event handling

However, the downloads for this series also come with the T-SQL scripts to recreate the database in SQL Server 2000 or SQL Server 2005. The code for the handler looks like this: protected void btn Save_Click(object sender, Event Args e) { Page. You can see that with the Business Objects, Business Logic and Data Access Layers built, it's quite easy to create web pages that allow users to manage objects in your system. Active View Index = 0; break; case "emailaddresses": gv Contact Persons. In fact, from an ASPX page perspective, all you need are the controls and the code in the event.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.

- 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. 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.Therefore, this article (part three) deals with using the business objects in a web application. NET controls like the Grid View in conjunction with the business objects. The good thing about this is you never have to worry about this list anymore. But by retrieving the existing item from the database, and only overriding what has changed, you can leave the existing data in tact. Showing, say, the phone number list, or the that is being edited, so first the BLL and then finally the DAL knows what record to update.

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You'll see how you can build pages that allow you to list, create, edit and delete your contact persons and their contact data, like e-mail addresses and phone numbers. Whenever you remove or add items from the enum, this list is updated automatically. Is Valid) { Contact Person my Contact Person; if (contact Person Id 0) { // Update existing item my Contact Person = Contact Person Manager. If we're creating a new contact person, the code instantiates one using the object's default constructor : which eventually saves the object in the database and returns its new ID. However, there are a few events that are triggered in the code behind that contain some interesting code.

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