Tableadapter not updating

13-Dec-2020 07:42

The following tip was excerpted from Chapter 1, 'Migrating from ADO to ADO.NET,' of the book Expert One-on-one Visual Basic 2005 Database Programming by Roger Jennings, courtesy of Wiley Publishers.Accept Northwind Data Set as the Data Set Name, as shown in Figure 1-7.Figure 1-7 Selecting a table automatically generates the Select Command that retrieves all table rows, and an Update Command, Insert Command, and Delete Command for base table updates. Click Finish to generate the Northwind Data Set typed Data Set and display it in the Data Sources window.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.Figure 1-5 compares the objects required by updatable ADODB Recordsets and ADO. Table Adapters and Data Sets also appear in the Toolbox's Project Name Components section; the Data section has Data Set, Binding Source, and Binding Navigator controls.During the early part of VS 2005's long gestation period, these design-time objects collectively were called Data Components, Binding Source was called a Data Connector, and Binding Navigator was Data Navigator.

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.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.Unlike the Data Environment Designer, multi-table Data Sets don't have the hierarchical structure that the OLE DB Shape provider creates for display in VB6's Hierarchical Flex Grid control.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.

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.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.Unlike the Data Environment Designer, multi-table Data Sets don't have the hierarchical structure that the OLE DB Shape provider creates for display in VB6's Hierarchical Flex Grid control.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.A common requirement is to calculate the total of a currency field and display it in a textbox.