CODEWITHSUNDEEP
delphilivebindings
Ricardo Alvares Pereira Junior
Ricardo Alvares Pereira Junior

Reputation: 151

Bidirectional TLinkPropertyToField Bindings

I have a TLinkPropertyToField Binding a TRadioGroup (Custom) to a Field using the ItemIndex property but I don't know why it doesnt pass the changes to the DataSet

Code:

auxLink := TLinkPropertyToField.Create(aOwner);
auxLink.Component := aOwner.FindComponent(aField.FieldName);
auxLink.ComponentProperty := 'ItemIndex';
auxLink.DataSource := BindSource;
auxLink.FieldName := aField.FieldName;
auxLink.Active := true;

Upvotes: 1

Views: 361

Answers (1)

asd-tm
asd-tm

Reputation: 5263

Unfortunately, TLinkPropertyToField does not naturally provide the requested functionality. See documentation:

Tip: The user input to this component is not monitored using an observer.

In other words the link is one way only.

You need pass the changes to ItemIndex manually or subclass the TLinkPropertyToField adding observer functionality. I doubt it is worth doing.

Upvotes: 1

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