sqltransaction for multiple methods

public void insertintoRegistration()
{
   //insert here
   //cmd.executenonquery()
}
public void insertintoCorr()
{
   //insert here
   //cmd2.executenonquery()
}

btninsert_click
{
   sqltransaction txn=con.begintransaction()
   cmd.transaction=txn;
   cmd2.transaction=txn;
   try
   {
      cmd.executenonquery();
      cmd2.executenonquery();
      txn.commit();
   }
   catch
   {
      txn.rollback();
   }
}