Hello, I have a datatable and oledbdataadapter on my class. I need to update datagridview contents when Form1 closes. I tried adding / removing dataset but got the same result.

Code:
dbOp.daProgramList.Update(dbOp.dtProgrmList)
Isn't this enough for updating a database?

The variables are declared my DatabaseOperations class like this:
Code:
Public Property dtProgramList As DataTable
Protected Friend Property Connection As New OleDbConnection
Public Property daProgramList As New OleDbDataAdapter
Public Function GetData(ByVal sqlCommand As String) As DataTable
	If Not (Connection.State = ConnectionState.Open) Then
		ConnectToDatabase()
	End If

	Dim command As New OleDbCommand(sqlCommand, Connection)
	daProgramList = New OleDbDataAdapter()
	daProgramList.SelectCommand = command

	dtProgramList = New DataTable
	dtProgramList.Locale = Globalization.CultureInfo.InvariantCulture
	daProgramList.Fill(dtProgramList)

	Return (dtProgramList)
End Function