DataBinding in VS2003

In the .Net Framework, any object that implements the IList interface can be data provider.
This not onlyt inludes ADO.Net object, such as DataSet,DataView,DataTable, but also more mundane objects such as array or collection.
In previous Data Access technologies, a cursor was used to manage data currency. As the cursor moved,the current record changed and bound control were updates.Because Data access in Ado.Net is fundamentally disconnected, there is no concept of a database cursor Rather, each data source has an associated CurrencyManager that keeps track of the current record.CurrencyManager objects are managed through a form's BindingContext object.
The CurrencyManager objects keeps track of the current record for a particular data source. There can be multiple datasource in an application at one time,and each datasource maintain its own CurrencyManager.
You can use PositionChanged event of the CurrencyManager to disable back and forward buttons when the end of the record list is reached.

For e.g

public void onPositionChanged(object sender, EventArgs e)
{
if(this.BindingContext[DataSet1.Customers].Position == 0)
BackButton.Enabled = false;
if(this.BindingContext[DataSet1.Customers].Position == DataSet1.Tables["Customers"].Rows.Count -1)
ForwardButton.Enabled = false;
}