I am completely new to DevExpress, and amount of properties and objects just creeps me out.
I have created cxGrid with master detail views. I just cant figure out how to control selecting record within details view. I would like to select specific sub-record programatically.
In case of master view, I can use DataController, but DataController of the details view gives me either -1 or 0 records.
How to access those filtered subrecords of a specific master record?
The detail DataController directly accessible from your detail view is sort of a pattern for the real detail DataControllers. What you really need is to get a detail DataController that holds the detail records corresponding to your master record.
In order to do this you have to use the GetDetailDataController method to get a clone of the detail view pattern, which will contain only the detail records of the master record you are interested in.
MyDetailDataController := MasterView.DataController.GetDetailDataController(AMasterRecordIndex, ARelationIndex);
The parameters for this call are following:
AMasterRecordIndex specifies the record index of the master.ARelationIndex specifies the detail view index. This is used mostly for cases where a master view has more than one detail view. If you have only one set it to 0. 