Vb net code for updating access database

While these values can be provided manually, when using ad-hoc SQL statements any customizations will be overwritten when the Table Adapter Configuration wizard is completed.Fortunately, Table Adapters created using stored procedures do not suffer from the same brittleness as those created using ad-hoc SQL statements.On the Assembly Information window, check Make assembly COM-Visible. This allows COM-based applications to call the class library's member variables and methods. There are a few ways to do it based on your circumstances.

With relational databases the data we are interested in working with is often spread across multiple tables. Supplier ID s and correlated subqueries can both be used to retrieve related data from other tables, many developers are left scratching their heads and wondering which approach to use.After the stored procedure has been updated, we will need to update the Data Table so that it includes these additional columns. Start by going to the Server Explorer, drilling down into the Northwind database s Stored Procedures folder, and opening the SELECT Employees. Delete(employee ID) ' Return true if precisely one row was deleted, otherwise false Return rows Affected = 1 End Function End Class properties for the last four Bound Fields to Last Name, First Name, Manager s First Name, and Manager s Last Name, respectively.To allow users to delete employees from this page we need to do two things.Figure 15: Deleting an Employee That has Corresponding Orders Results in a Foreign Key Constraint Violation (Click to view full-size image) To allow an employee to be deleted you could: s provide two different techniques for accessing data from related tables in a query.In previous tutorials we most commonly made use of correlated subqueries because the Table Adapter cannot auto-generate s.

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Right-click on the Designer, select the Add option from the context menu, and pick the Table Adapter menu item. This will run the stored procedure and show its results in the Output window (see Figure 9).

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