How to Use Number Sequence Engine Efficiently with Dynamics AX Forms

yourTableBuffer.Field = NumberSeq::newGetNum(NumberSequenceReference::find(TypeID2ExtendedTypeId(TypeId(YourExtendedDataType)))).num();

yourTableBuffer.Field = NumberSeq::newGetNum(NumberSequenceReference::find(TypeID2ExtendedTypeId(TypeId(YourExtendedDataType))), true).num();

//Form level method
NumberSeqFormHandler numberSeqFormHandler()
{;
    //you should have been declared numberSeqFormHandler variable in the ClassDeclaration of your form
    if (!numberSeqFormHandler)
    {
        numberSeqFormHandler = NumberSeqFormHandler::newForm(NumberSequenceReference::find(TypeID2ExtendedTypeId(TypeId(YourExtendedDataType))).NumberSequence,
                                                             element,
                                                             YourDataSourceName,
                                                             fieldnum(YourTableName, Field));
    }
 
    return numberSeqFormHandler;
}

//Form methods
public void close()
{
    if (numberSeqFormHandler)
    {
        numberSeqFormHandler.formMethodClose();
    }
    super();
}

//DataSource method
public void write()
{
    element.numberSeqFormHandler().formMethodDataSourceWrite();
    super();
}

//DataSource method
public boolean validateWrite()
{
    boolean ret;
 
    ret = super();
    ret = element.numberSeqFormHandler().formMethodDataSourceValidateWrite(ret) && ret;
 
    return ret;
}

//DataSource method
public void linkActive()
{
    element.numberSeqFormHandler().formMethodDataSourceLinkActive();
    super();
}

//DataSource method
public void delete()
{
    element.numberSeqFormHandler().formMethodDataSourceDelete();
    super();
}

//DataSource method
public void create(boolean _append = false)
{
    element.numberSeqFormHandler().formMethodDataSourceCreatePre();
 
    super(_append);
 
    element.numberSeqFormHandler().formMethodDataSourceCreate();
}