Useful Codes

Index : 

1. To get new and old values in modified method of any table
2.
To get new and old values in Modified method of any table :

public void modifiedField(FieldId _fieldId)
{
if (fieldNum(SalesTable, ShippingDateRequested) == _fieldId)
    {
        str oldValue, newvalue;
        oldValue = this.orig().(_fieldId);
       newvalue = this.(_fieldId);
     info(strfmt("Field number %1 changed from %2 to %3",_fieldId,this.orig().(_fieldId),this.            (_fieldId)));
}