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08-Sep-2017 17:51

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.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.aspdotnet-suresh offers C#articles and tutorials,csharp dot net,articles and tutorials, VB.The following tip was excerpted from Chapter 1, 'Migrating from ADO to 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.

updating database from dataset vb net-57

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You can't open the saved schema in the project's Schema Designer. To make editing easier, you can automate increasing the column widths to match the content by setting the Data Grid View's Auto Size Columns Mode property value to All Cells or Displayed Cells, which adds a horizontal scrollbar to the control. Figure 1-13 Drag the Data Table icon to the form to automatically add a column of labels with associated data-bound Controls -- text boxes for this example -- to the form.

The code also provides direct access to named classes, methods, and events for the Data Set and its Table Adapter(s) -- Customers Table Adapter for this example -- in the Northwind Data Set. Figure 1-10 shows Internet Explorer displaying the first few lines of the 352-line schema . Customers) End Sub Figure 1-12 shows the final form after reducing the form's size, expanding the Data Grid View control to fill the available space, and pressing F5 to build, debug, and run the project. However, a Data Navigator is much more useful for a details form that displays column values in text boxes or other bound controls, such as date pickers for Date Time and checkboxes for Boolean values.



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