How to filter workspace list grid / form Part in D365

In workspace filtering form part is quite complex task on which Microsoft has given very least documentation. In workspaces form parts are bound togther with a common datasource so we cannot add ranges for filteration. However by using SysIFilterProvider Interface it is possible to implement a method on each form part that is used on the workspace that would get a filter value from its parent workspace form and trigger those methods each time a modified() method is triggered on a workspace itself.

Step: 1

Make sure your form class implements SysIFilterProvider interface. as shown in image.

Step: 2

On Init method initialize your filter control change event from which you will get the value for filter your records as shown in image.

Step: 3

Write parmFilter method on which you passes the value to your form part as shown in image.

Note: 

In SysFilterValueFactory class there are six types of filters that you can use. In my case I am using RecId filter.

1- createFilterValueForBuffer

2- createFilterValueForRecId

3- createFilterValueForDateTime

4- createFilterValueForDate

5- createFilterValueForInteger

6- createFilterValueForString

Step: 4

Write parmChangeEvent as shown in image.

Step: 5

Implement SysIFilterConsumerForm, SysIFilterEventHandler Interfaces to your form part classes as shown in image.

Step: 6

Write register & fiter events and provide implementation of your datasource as shown in image.