public static void LoadAction1Step1( IEditOpportunityContact form,  EventArgs args)
 {
     Sage.Entity.Interfaces.IOpportunityContact oppContact = form.CurrentEntity as Sage.Entity.Interfaces.IOpportunityContact;
     foreach(Sage.Entity.Interfaces.IOpportunityContact contact in oppContact.Opportunity.Contacts)
     {
         if(!oppContact.InstanceId.Equals(contact.InstanceId))
         {
             if (oppContact.IsPrimary.HasValue && oppContact.IsPrimary.Value)
             {
                 contact.IsPrimary = false;
             }
         }
     }
 }
 /// <summary>
 /// Iterates through the opportunity contacts collection and sets the primary flag of the opportunity
 /// contact to false if this instance of the opportunity contact is set to be the primary.
 /// </summary>
 /// <param name="form">The form.</param>
 /// <param name="args">The <see cref="System.EventArgs"/> instance containing the event data.</param>
 public static void cmdOK_OnClick(IEditOpportunityContact form,  EventArgs args)
 {
     IOpportunityContact newOppContact = form.CurrentEntity as IOpportunityContact;
     foreach(IOpportunityContact oppContact in newOppContact.Opportunity.Contacts)
     {
         if(!newOppContact.Equals(oppContact))
         {
             if (newOppContact.IsPrimary.HasValue && newOppContact.IsPrimary.Value)
             {
                 oppContact.IsPrimary = false;
             }
         }
     }
     if (newOppContact.Opportunity.Id != null)
         newOppContact.Save();
 }
        /// <summary>
        /// Iterates through the opportunity contacts collection and sets the primary flag of the opportunity
        /// contact to false if this instance of the opportunity contact is set to be the primary.
        /// </summary>
        /// <param name="form">The form.</param>
        /// <param name="args">The <see cref="System.EventArgs"/> instance containing the event data.</param>
        public static void cmdOK_OnClick(IEditOpportunityContact form, EventArgs args)
        {
            IOpportunityContact newOppContact = form.CurrentEntity as IOpportunityContact;

            foreach (IOpportunityContact oppContact in newOppContact.Opportunity.Contacts)
            {
                if (!newOppContact.Equals(oppContact))
                {
                    if (newOppContact.IsPrimary.HasValue && newOppContact.IsPrimary.Value)
                    {
                        oppContact.IsPrimary = false;
                    }
                }
            }
            if (newOppContact.Opportunity.Id != null)
            {
                newOppContact.Save();
            }
        }