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Dynamic VisibleDays
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Gurpreet
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Gurpreet asked on 17 Oct 2012, 03:24 PM
Hi,

I have a ComboBox which contains a list of numbers which reflects the days we would like to see in the RadScheduleView. So I bound the SelectedItem of the ComboBox to the VisibleDays in the TimeLineViewDefinition. The Design view changed straight away and threw the following error 

    '0' is not a valid value for property 'System.Windows.CustomDependencyProperty'

When I set the value in the xaml it works fine.

Any idea how this would be done?

Kind regards,
Gurpreet


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Ventzi
Telerik team
answered on 22 Oct 2012, 09:07 AM
Hi Gurpreet,

The VisiblaDays property of the TimeLineViewDefinition accepts only integer numbers bigger than 0. That is why the built-in validation throws the exception.

If you bind the VisibleDays property of the RadScheduleView to the SelectedItem property of the RadComboBox, you need a ValueConverter to convert the ComboBoxItem to System.Int. This throws an internal binding error and that is why the value is not being validated.

Hope this helps.

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Ventzi
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Gurpreet
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answered on 22 Oct 2012, 09:12 AM
Thanks. I've implemented that and it works great!
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Gurpreet
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answered on 24 Oct 2012, 10:38 AM
I've got another problem with binding.

When I bind the MinorTickLength and MajorTickLength of my TimeLineView definition and step through the code, the properties are populated correctly. However this is not reflected in the TimeLineView.

<MinorTickLength="{Binding SelectedMinorTickLength}" MajorTickLength="{Binding SelectedMajorTickLength}">

The TimeLineView appears the same as when I don't set the MinorTickLength and MajorTickLength in the xaml.

I saw another post where it was suggested that the bindings be assigned like so:

<MinorTickLength="{Binding DataContext.SelectedMinorTickLength, ElementName=scheduleViewDetails}">
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Vladi
Telerik team
answered on 26 Oct 2012, 08:26 AM
Hello Gurpreet,

The MinorTickLength/MajorTickLength properties should be bounded to values of type FixedTickProvider.

The next code snippets show how the binding should look like:
In the xaml:
<telerik:RadScheduleView>
    <telerik:RadScheduleView.ViewDefinitions>
        <telerik:TimelineViewDefinition MinorTickLength="{Binding MinorTickLenght}" MajorTickLength="{Binding MajorTickLenght}" />
    </telerik:RadScheduleView.ViewDefinitions>
</telerik:RadScheduleView>

and in the ViewModel:
public class ViewModel
{
    public FixedTickProvider MinorTickLenght { get; set; }
    public FixedTickProvider MajorTickLenght { get; set; }
 
    public ViewModel()
    {
        this.MinorTickLenght = new FixedTickProvider(new DateTimeInterval(1, 0, 0, 0));
        this.MajorTickLenght = new FixedTickProvider(new DateTimeInterval(0, 2, 0, 0));
    }
}

Hope this helps.

Greetings,
Vladi
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Gurpreet
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answered on 26 Oct 2012, 08:52 AM
Thanks Vladi,

That works great!
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Gurpreet
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Ventzi
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Gurpreet
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Vladi
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