By Dan Maharry
It is a e-book for starting and intermediate VB.NET scholars who are looking to study the middle of VB.NET: database programming, and so they are looking to examine through happening a trip with Peter Wright on the top of his powers. utilizing a similar iconoclastic force that introduced Peter Wright to a most sensible promoting writer along with his ‘Beginning VB6’ e-book from Wrox, Peter is again in company with a go back to his most sensible shape. There are an array of VB.NET database books out there, yet Peter deals greater than only a technical walkthrough: he's taking the reader via a private trip to services in VB.NET database programming. Following the classical formulation of a fast moving instructional, and the classical formulation of mythological legend, this can be a programming publication that would stand proud of the group during this busy area. VB.NET is a strong programming .NET programming language that's usually thought of the ‘workhorse’ of programming – and database programming in VB.NET money owed for an incredible volume of the full programming attempt occurring at the present time. to appreciate VB.NET, and VB.NET database programming, is as a way to meet the every-day demanding situations confronted in such a lot programming initiatives this day. Peter Wright enlivens this ‘workhorse’ subject along with his personal exact type to deliver learner and pupil programmers the place they should be on their technique to services in today’s VB.NET programming jobs.
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Additional resources for Beginning VB .NET 1.1 Databases: From Novice to Professional
The second statement then adds a new data binding, this time with data for the currently selected row. The first parameter of the Add method is the name of the property you want to bind data to, namely, the Text property. The second parameter is the actual data the control should use. You know that the index of the selected item in the ListBox is the same as the row you’re interested in, so you use this index to retrieve a row from the Employees table. The third and final parameter is the name of the column the control should use.
You need to add an event handler to the ListBox control. At the top edge of the code window are two drop-down lists. From the General one on the left, select ListBoxNames, and from the Declarations one on the right, scroll down and click SelectedValueChanged. 2. The outline for the event handler will be generated and shown in the code window. Add the bold code shown in Listing 2-1 to the event handler. Listing 2-1. SelectedIndex), "Notes") End If End Sub _ _ _ _ Run the application again. When you select an item in the list box, the values in the text boxes change, as shown in Figure 2-13.
Link. CHAPTER 2 ■ CREATING A SIMPLE DATABASE APPLICATION 9. In the dialog box, change the name from DataSet1 to DataSetEmployees (see Figure 2-7) and click OK. The dataset will be added to the tray. Figure 2-7. NET has actually been busy writing code for you with each step. You now have the ability to connect to a database, select specific data, and work with that data using a dataset. You’ll look more at data adapters and datasets in Chapter 8, where you’ll learn how to code and use them. Note that although you named the dataset DataSetEmployees, the designer named it DataSetEmployees1, so when you refer to this dataset later, you’ll use DataSetEmployees1.
Beginning VB .NET 1.1 Databases: From Novice to Professional by Dan Maharry