Updating database from dataset vb net


27-Aug-2017 19:54

This book uses the term data component to refer to named design-time data objects that reside in the form design tray.Add a Typed Data Set from an SQL Server Data Source ADO.Web services and object instances also can act as ADO. Figure 1-5 Here's how to add a new SQL Server Northwind data source for a new Windows form project and automatically generate a typed Data Set and its components from the Customers table: 1.Choose Data➪Show Data Sources to open the Data Sources window, if necessary, and click Add New Data Source to start the Data Source Configuration Wizard. On the Choose a Data Source Type page, accept the default Database type, and click Next to open the Choose Your Database Connection page, which displays existing data connections, if any, in a dropdown list. Click the New Connection button to open a simplified Add Connection dialog, which usually defaults to Microsoft SQL Server Database File. SQLEXPRESS in the Select or Enter a Server Name combo box.

Click here for the complete collection of book excerpts.Data Sets have no corresponding ADODB object, but both classes of Data Sets behave similarly to disconnected Recordsets in the following ways: Use the following table of contents to navigate to the most important differences between Data Sets and disconnected Recordsets, then get methods for generating ADO. Parameters are optional for ADODB commands, but not for updatable Table Adapters, which have four standard commands— Select Command, Insert Command, Update Command, and Delete Command. NET objects with VS 2005 and SQL Server 2000 or 2005.NET objects with VS 2005 and SQL Server 2000 or 2005. VS 2005 materializes Table Adapters, Data Sets, Binding Sources, and Binding Navigators as named objects in the form design tray.You create typed Data Sets, which are defined by an XML schema and implemented by a very large amount of auto-generated VB 2005 code, with VS 2005 designers.

Untyped Data Sets are runtime objects that you create with code. The section "Add a Data Grid View and Data Navigator Controls," later in this chapter, describes how the Binding Source fits into ADO. The following sections show you alternative methods for generating Figure 1-5's ADO.Dragging the Customers table node from the Data Sources window to your project's default Form1 autogenerates four components in the tray below the form designer and adds Data Grid View and Data Navigator controls to a dramatically expanded form, as shown in Figure 1-11. Private Sub frm Data Grid View_Load(By Val sender As System. Add a Related Data Bound Control You can add a related table to the Data Sources window and then add a control, such as a Data Grid View, that you bind to the related Binding Adapter. Correct any object name errors that the debugger reports. Open the Data Source window, and click the Configure Data Set with Wizard button to open the Choose Your Database Objects page. Expand the Tables node, mark the Orders table checkbox, and click Finish, which adds in the Data Sources window a related Orders node to the Customers table and a standalone Orders node (see Figure 1-15). With Data Grid View selected in the dropdown list, drag the related Orders node below the bound text boxes of the form to autogenerate an Orders Data Grid View control. Adjust the size and location of the controls, and set the Orders Data Grid View . Figure 1-16 Dragging the related Orders table node to the form adds an Orders Table Adapter and Orders Binding Source to the tray and the Orders Data Grid View control to the form.