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Hi All ,
What is the difference between Form Methods , Form Data source Methods , Table Level Methods ?
At what situation we are using these methods ?
Thanks ,
Priya New to Ax .
*This post is locked for comments
Hi Priya,
1. Form methods can be overridden so as to change the behavior of the form in response to user interface events, and customize the appearance of a form.
2. Form datasource methods can be overriden so as to change the behavior for validation, caching etc eg initvalue() can be used to fill in default values when creating a new record
3. Table methods is where most of processing codes should be placed instead of on form datasource methods. This can be overridden eg validateField() to validate a value in a field
See the below links for details:
msdn.microsoft.com/.../aa625830.aspx
msdn.microsoft.com/.../aa674599.aspx
msdn.microsoft.com/.../aa893931.aspx
For understanding the concepts please refer to below MSDN links.
Form Methods --> https://msdn.microsoft.com/en-us/library/aa674599.aspx
Form data source methods -->https://msdn.microsoft.com/en-us/library/aa893931.aspx
Table methods --> https://msdn.microsoft.com/en-us/library/aa625830.aspx
Please note that Code written on forms cannot be re-used or inherited. If possible, write your code on the underlying table or in a class.
When it comes to situations, there can be many different situations. Some common examples :
Form methods --> Set form controls access, controlling unbounded control behaviour, identifying caller of the form.
Form data source methods --> Assigning default query ranges, enabling disabling columns of form buttons based on selected record.
Table methods --> Validating record values while creating or deleting a record, initializing default values when creating a record, validating the column values.
Hope this helps.
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