Me.ContactNameNamedRange.DataBindings( _ "Value"). Private Sub ContactNameNamedRange_Change(ByVal Target As _ .Range) Handles _ ContactNameNamedRange.Change If the user changes the information and then selects the update, using the updateall method, then record is successfully updated. Updating a data source using the WriteValue method You can add this code in the Change event handler of the NamedRange control, as shown in Listing 7.21. Updating a database using a table adapter Me.CustomersTableAdapter.Update(NorthwindDataSet)įor controls that have simple data binding, such as the NamedRange control, you must first write code that updates the data source before calling the Update method of the TableAdapter. To do this, you must call the Update method of the TableAdapter, as shown in Listing 7.20. You can also use the table adapter to update the database with changes made to data in the data source. If Me.NeedsFill("NorthwindDataSet") Then Me.CustomersTableAdapter.Fill( _ Me.NorthwindDataSet.Customers) End If End Sub 'TODO: Delete this line of code to remove the 'default AutoFill for 'NorthwindDataSet.Customers'. Private Sub Sheet1_Startup(ByVal sender As Object, ByVal e As _ System.EventArgs) Handles Me.Startup When the TableAdapter is created, code to fill the dataset with data is automatically added to the Startup event handler of the worksheet that contains the data-bound control, as shown in Listing 7.19. The TableAdapter's Fill method reads the data from the database and populates (fills) the dataset with the data. The table adapter lets you read to and write from a database. The TableAdapter is an ADO.NET object that enables your application to communicate with a database.
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December 2022
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