c#.nET 2008 Transfer variable from one FORM to another FORM

Question

Hi Friend, MQ
Need your help. Please help me sort out this puzzling problem.

The intOrderID  whose data ORDERID which I retrieve it from DataGridView1 in FRMSALESVIEW and transfer it to FORM FrmSalesMaint. but it's not working.
In VB.NET I used PROPERTY SET, GET but in C#, not sure how to code it.

FORM FrnSalesView
private int intOrderID;   
  private void btnOrderMaint_Click(object sender, EventArgs e)
        {
            FrmSalesMaint FM = new FrmSalesMaint();
            FM.PropOrderId = (intOrderID)  ;    
            FM.ShowDialog();
        } 
------------------------------------------
FORM FrmSalesMaint
private int intPOrderID;   
 public Int32  PropOrderId
            {
                get {return intPOrderID;}
                set { intPOrderID = value; }
            } 

Appreciate your help very much. Thank you for spending your precious time to help me.
 
Have a Good Day,
Cheers,
Lennie