NumberSeqFormHandler Class's Methods

(AX 2009) What is the Purpose of the following

  1. formMethodDataSourceCreatePre();

  2. formMethodDataSourceCreate();

  3. formMethodDataSourceWrite();

  4. formMethodDataSourceDelete();

  5. formMethodDataSourceLinkActive()

We have used these method in Data-source methods in Form for Number Sequence…Can anyone explain the uses of the above…?

They merely notify the number sequence handler about form events, such as that a record was created. The handler allocates (and releases) number sequence numbers. If you want details about a particular method, simply open it and read the code.