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Possible to Bind a ConverterParameter in RadComboBox?

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ComboBox

This is a migrated thread and some comments may be shown as answers.

Kelly asked on 02 Dec 2011, 09:37 PM

Hello,

I'm trying to bind the SelectedItem of the RadComboBox. I need to pass the ItemsSource of the combobox to the Converter used for Selected Item. Everyt time I try to bind anything to the ConverterParameter, I get the following when parsing the xaml in InitializeComponent:

{System.Windows.ApplicationUnhandledExceptionEventArgs}

base {System.EventArgs}: {System.Windows.ApplicationUnhandledExceptionEventArgs}

ExceptionObject: {System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Windows.Markup.XamlParseException: Provide value on 'System.Windows.Data.Binding' threw an exception. [Line: 101 Position: 98] ---> System.InvalidOperationException: Operation is not valid due to the current state of the object.

at MS.Internal.XamlManagedRuntimeRPInvokes.TryApplyMarkupExtensionValue(Object target, XamlPropertyToken propertyToken, Object value)

at MS.Internal.XamlManagedRuntimeRPInvokes.SetValue(XamlTypeToken inType, XamlQualifiedObject& inObj, XamlPropertyToken inProperty, XamlQualifiedObject& inValue)

--- End of inner exception stack trace ---

at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)

at AttnHistory.Views.HistoryView.InitializeComponent()

at AttnHistory.Views.HistoryView..ctor()

--- End of inner exception stack trace ---

at System.Windows.Navigation.PageResourceContentLoader.EndLoad(IAsyncResult asyncResult)

at System.Windows.Navigation.NavigationService.ContentLoader_BeginLoad_Callback(IAsyncResult result)

at System.Windows.Navigation.PageResourceContentLoader.BeginLoad_OnUIThread(AsyncCallback userCallback, PageResourceContentLoaderAsyncResult result)

at System.Windows.Navigation.PageResourceContentLoader.<>c__DisplayClass4.<BeginLoad>b__0(Object args)}

Handled: false

My latest attempt at binding is:

<telerik:RadComboBox ItemsSource="{Binding Periods}"

DisplayMemberPath="Header"

SelectedItem="{Binding CurrentView.Period, Mode=TwoWay,

Converter={StaticResource PeriodConverter}, ConverterParameter={Binding Periods}}">

No errors if I leave out the ConverterParameter, but then my Converter won't function correctly. The same binding works correctly for the ItemsSource.

Thank you,

KO

Possible to Bind a ConverterParameter in RadComboBox?

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