Object reference not set to an instance of an object

Hej E.

Jeg har denne kode.

Dim rowDelete As DataSet1.EmployeesRow
rowDelete = DataSet11.Employees.FindByEmployeeID(13)
rowDelete.Delete()

den skal bare slette post 13 fra mit dataset(dette er kun en test), men når jeg køre koden så siger den at jeg ikke har instanceret mit objekt.

men jeg kan ikke gøre således.
Dim rowDelete As DataSet1.EmployeesRow = new DataSet1.EmployeesRow

her er fejlen:
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Håber jeg har forklaret mig godt nok.