DevForce Community Forum : Drop Down, ComboBox bindings and interdependencies

Drop Down, ComboBox bindings and interdependencies : you can use silverlight element...

Thu, 26 Nov 2009 06:53:58 -700

Author: jeffk
Subject: 1566
Posted: 26-Nov-2009 at 6:53am

you can use silverlight element binding to link the selection of one combobox to another. for example, here would be the "parent" combobox.

<telerikInput:RadComboBox

x:Name="rcbPartyEmployer"

ItemsSource="{Binding Companies}"

SelectedItem="{Binding SelectedContact.TheContactEmployer, Mode=TwoWay}"

DisplayMemberPath="PartyName" />

and here would be the "child" combobox where it's ItemsSource property is bound to the SelectedItem property of the parent.

<telerikInput:RadComboBox

x:Name="rcbPartyManager"

ItemsSource="{Binding SelectedItem.TheOrganizationContacts, ElementName=rcbPartyEmployer}"

SelectedItem="{Binding SelectedContact.ThePartyManager, Mode=TwoWay}"

DisplayMemberPath="PartyName" />

you will have to decide on how you are going to do the data retrieval to make this work. i found it easier to include the child properties in the query for the parent ItemsSource so you don't have to deal with asyncronous data loading but YMMV.

hope this helps,

jeff

Drop Down, ComboBox bindings and interdependencies : Just affirming that this is a...

Wed, 25 Nov 2009 15:14:13 -700

Author: GregD
Subject: 1566
Posted: 25-Nov-2009 at 3:14pm

Just affirming that this is a Silverlight and UI-databinding and/or UI-architecture question, not specific to DevForce. Perhaps someone else will jump in with assistance.

Drop Down, ComboBox bindings and interdependencies : Most of the tutorials I see on...

Tue, 24 Nov 2009 06:27:12 -700

Author: manishaudio
Subject: 1566
Posted: 24-Nov-2009 at 6:27am

Most of the tutorials I see on Silverlight data binding are very simplistic in nature. I have an application where I have Locations, Buildings, Rooms and Assets. What I am working on now and having some issues with is an Asset Editor screen whereby the choice of a location will drive the building choices, which in turn will drive Room choices. If you good folks could give me some pointers on how to do that, I'd appreciate it. I know that the plumbing is all there in that collections were already nicely generated by the Ideablade entity manager. This may be more of a SL question.