Axapta Display method for select row in Grid

I facing an issue when I assign display value to Grid. It's will only give me the current select grid record instead of particular row record as below :- 

 since I need the exactly related record, not the currently select grid record. therefore I need to set parameter on the Display method to allow the system know which row of record I refer.


Step by Step


1. Create a Display method on the child table which will display records in detail grid :-

2. Write the code below to the method:-

3. Create a new Control to the detail grid. 

4. Right click the Control and select properties. Set AllowEdit = No, DataSource = Child Table (which contain the display method) and DataMethod = Display Method that created just now 

5. Done. =)