Protected, Shadow, etc.

[Marivic]

Hi all,

I found this snippet from syncfusion.com to programmatically scroll the datagrid to a particular row

Public Class MyDataGrid 
       Inherits DataGrid 
           Sub ScrollToRow(ByVal row As Integer) 
                If Not Me.DataSource Is Nothing Then 
                     Me.GridVScrolled(Me, New ScrollEventArgs(ScrollEventType.LargeIncrement, row)) 
                End If 
           End Sub 
      End Class

How can I incorporate this in my code. I have a form with a datagrid. If I remove public class to just retain the sub block:

Sub ScrollToRow(ByVal row As Integer) 
                If Not datagrid1.DataSource Is Nothing Then 
                     datagrid1.GridVScrolled(Me, New ScrollEventArgs(ScrollEventType.LargeIncrement, row)) 
                End If 
End Sub

i get an error:

D:\vendormst\vendor.vb(263): 'System.Windows.Forms.DataGrid.Protected Overridable Overloads Sub GridVScrolled(sender As Object, se As System.Windows.Forms.ScrollEventArgs)' is not accessible in this context because it is 'Protected'.

Could somebody help me to understand the concept protected, override, shadow, overloading. I've read a lot of topics about these but couldn't understand these fully.

Thanks a lot.