Bindingsource endedit not updating dataset
Click here for the complete collection of book excerpts.Trends come and go, but your DB strategy shouldn’t be a flavor of the month.For more information, see Personalize the Visual Studio IDE.This step creates a data source from the Northwind database using the Data Source Configuration Wizard.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.This option requires attaching a copy of to your SQL Server or SQLX instance, so click the Change button to open the Change Data Source dialog, select Microsoft SQL Server in the Data Source list, and click Continue to open the full version of the Add Connection dialog. Alternatively, select a local or networked SQL Server or MSDE instance that has a Northwind or Northwind CS database. Accept the default Use Windows NT Integrated Security option, and open the Select or Enter a Database Name list and select Northwind. Sql Client as the Provider, and Data Source=localhost; Integrated Security=True; Database=Northwind as the Connection String. Click Next to display the Save the Connection String to the Application Configuration File page.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.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.
This walkthrough shows how to add code to save updates from more than one table.
A transaction is a process that assures that all related changes to a database are successful before any changes are committed.
For more information, see Transactions and Concurrency.
Note For clarity, this walkthrough does not use a transaction.
However, if you're updating two or more related tables, include all the update logic within a transaction.You must have access to the Northwind sample database to create the connection.