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Questions tagged [livebindings]

LiveBindings is a data-binding feature supported by both the VCL and FireMonkey in RAD Studio XE2 and later versions.

LiveBindings in RAD Studio

139 questions
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How do I get the SelectedValue of a ComboBox from code?

I am trying to build something like a TLookupComboBox using LiveBindings. I have placed a normal TComboBox on a VCL form. I also have a data set with some rows that have the two fields id and text. Then I used the LiveBindings editor to create a…
Jens Mühlenhoff
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How to add scope to binding expressions in Delphi Live Bindings?

I know how to use live bindings on a form to bind one property to another property using an expression. For instance, binding a TLabel's Caption to a TEdit's text property. I know how to create new expressions using IScope, TNestedScope,…
Nick Hodges
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How to stop Delphi IDE to generate .vlb file

.vlb files store visual Live Bindings data. Previously, my Delphi project never touched visual live bindings. Whenever I saved a form, the IDE didn't generate a .vlb file. Recently, I clicked on the 'Bind Visually...' option on one of my forms in…
Chau Chee Yang
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Bidirectional Livebinding of TRadioGroup in VCL

New to livebindings and so far it hasn't been a smooth journey. I'm trying to link a TRadioGroup.ItemIndex to a TObject property that's an Integer. So I know the bindinglist/adapter is ok as other properties in the Object is bound correctly and…
AntonE
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DB Lookup field with Firemonkey and Delphi XE2

I can't find a way to bind a TCombobox with a lookup field in Firemonkey. In VCL you have a TDBLookupComboBox that just needs a TDatasource component and the lookup field name to populate the combobox list. In this way you can edit the FK field…
Xenon
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Listbox does not show the changes made to the Dataset

I have a FMX ComboBox connected through LiveBindings to a ClientDataset. Everything works fine, until I needed to filter the data from the ClientDataset. After applying the filter, ComboBox.Items and ComboBox.ListItems are ok, i.e., it is the data…
Ricardo
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How to extract Object of a BindSource in Delphis LiveBindings?

In Delphi 10.1 I have an ObjectList named DogCollection and each entry is of the type TDog, a custom class. thanks to tutorials from malcolm groves I was able to populate a Stringgrid with my…
Viktor Pagels
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How do I make programmatic changes to a TComboBox play well with LiveBindings?

I have a form that has two combo boxes, both of which contain the same list of items, and need to remain perfectly in sync with one another. (They represent the same list of options on two different tabs of a TPageControl.) To make this work, I set…
Mason Wheeler
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Delphi: Making a component visible to live binding

I have been trying to make a test object that has a string property visible to the visual binding form. The component is registered with the appropriate properties. Using XE8 and Firemonkey. I can get it to show on the visual binder by selecting it…
Yandros
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Delphi XE LiveBindings - Bits to Byte

I just discovered livebindings with Delphi. And created my first components for handling a control-word for a frequency converter. The component it self seems to work well testing it in the form designer. However, compiling and running the…
wittrup
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TBindScope missing in XE6 IDE

TBindScope component exist in XE4 and XE5 IDE but is missing in my XE6's tool palette. Is this component deprecated?
Chau Chee Yang
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ListBox Item limit on Delphi XE5 FireMonkey

I´m using listbox component and LiveBindings to list the content of a field, but the table has 14443 records and the lisbox displays only 200 records. The version of delphi XE5 is a try license. What the limit lines of a listbox? The mobile is…
user2880780
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how to (correctly) use an enumerated type with livebindings (TObjectBindSourceAdapter)

I'm using TObjectBindSourceAdapter to use livebindings with an object. One of the properties of the object i'm using with TObjectBindSourceAdapter has an enumerated type, but the field in the adapter is never generated when i use an enumerated type…
Willems Davy
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Can I connect a Delphi TEdit (or similar) simply to a published property of a class?

I've had this problem for years but maybe it is now possible to easilty solve it. I need to lay out a panel with several TEdit controls, each should show, and allow editing of, a published property of a class. Traditionally I would use TEdit (or a…
Brian Frost
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XE3 Visual LiveBindings: bidirectional connection between TSpinBox and TTrackBar (FireMonkey)

I am using Delphi XE3 with SP1. I have created a FireMonkey Desktop Application and dropped a TSpinBox and a TTrackBar on the main form. I have now connected the "Value" property of the TSpinBox and the TTrackBar using Visual Livebindings. The IDE…
Olaf Hess
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