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We are going to do everything from the server side. This control has one very important event that we are going to heavily manipulate - Item Data Bound. Code explanation We are going to have Label controls in Item Template and Text Box controls in Edit Item Template.

In "edit mode" every Label is going to be switched with Text Box.

The Update button has the Command Name attribute set to "Update". Now that we are in "edit mode" we are looking for Text Box controls from the Edit Item property.

Using values from Text Box controls we are updating data to the database and closing Edit Item Template.

NET that allow you to easily create websites for working with the create, read, update, and delete (CRUD) operations of an entire data model that exists as either a Data Context (such as LINQ to SQL) or an Object Context (such as LINQ to Entities).

To complete the lessons in this chapter, you should be familiar with developing applications with Microsoft Visual Studio 2010 by using Microsoft Visual Basic or Microsoft Visual C#.

Using these controls can provide development efficiency when you are building business applications that rely heavily on data. A data source can be a relational database, data stored inside of in-memory objects (such as a Data Set or an Entity Data Model), XML-based data, or data you retrieve via Microsoft Language-Integrated Query (LINQ).

The second lesson in this chapter demonstrates how you can bind to data to allow users to interact with it.

Note that you can’t delete genres that have one or more reviews attached to them. Chapter 15 digs much deeper into changing the user interface (UI) to disable the Delete links so users can no longer accidentally click them.

(visible in Figure 13-5), to sort the data in the grid on that column.

If you click the same header again, the data is sorted in reverse order.

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