Private Sub btnSelect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSelect.Click
        'As a precautional step, to avoid errors, i am reloading the DataTable..
        'Using a Data adapter to load data into the DataTable..
        'You can refer these urls: 
        'http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=4790&lngWId=10 or 
        'http://www.a1vbcode.com/app-3771.asp for information to use DataAdapters..
        DA = New OleDb.OleDbDataAdapter("Select * from Employees", CN)
        DT = New DataTable
        DA.Fill(DT)

        'initializing command builder, this will be used later..
        CMB = New OleDb.OleDbCommandBuilder(DA)
    End Sub