Silverlight Controls and Silverlight Toolkit

Re: how do you use TemplateBinding with a Width(double) property with a "*" or "Auto" on a new DependencyProperty?

xsirxx — Thu, 09 Oct 2008 02:51:59 GMT

PERFECT Yi-Lun Luo! That should work great! You always know the answers!

Thanks very much,

Brad

Re: how do you use TemplateBinding with a Width(double) property with a "*" or "Auto" on a new DependencyProperty?

sanjay_sk16 — Wed, 08 Oct 2008 12:48:24 GMT

Hi xsirxx,

there is optiong to set width to auto you can use

double PanelWidth = double.NAN;

Re: how do you use TemplateBinding with a Width(double) property with a "*" or "Auto" on a new DependencyProperty?

Yi-Lun Luo - MSFT — Wed, 08 Oct 2008 09:57:31 GMT

Hello, the problem is, Canvas does not respect to Auto size. Try to use a Grid instead of Canvas. If you need percentage size, you can't use double. You need to use the GridLength type.

Re: how do you use TemplateBinding with a Width(double) property with a "*" or "Auto" on a new DependencyProperty?

xsirxx — Tue, 07 Oct 2008 16:06:53 GMT

*shameless bump*

To go into more depth incase I worded the quesstion badly(which I normally do), Say I were to add this line in the xaml:

<!-- in generic.xaml -->

<Style TargetType="cyc:SomeControl">

<Setter Property="PanelWidth" Value="Auto"/>

        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="cyc:SomeControl">
                    <Grid x:Name="RootElement">
                        <Canvas x:Name="PanelElement" Width="{TemplateBinding PanelWidth}">
                        </Canvas>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

The line "<Setter Property="PanelWidth" Value="Auto"/>" will not work because of PanelWidth being a double.... is there a way to create a custom property and set it as Auto?

Thanks again,

Brad

how do you use TemplateBinding with a Width(double) property with a "*" or "Auto" on a new DependencyProperty?

xsirxx — Mon, 06 Oct 2008 20:48:25 GMT

I have a control that has a DependencyProperty that sets a width. It is a double so setting actual values works just fine. But my problem is I want to be able to set percentages and Auto but I am bombing out on it.... here is the code, the property is PanelWidth...

// other control code

public static readonly DependencyProperty PanelWidthProperty = DependencyProperty.Register("PanelWidth", typeof(double), typeof(SomeControl), null);
public double PanelWidth
{
    get { return (double)GetValue(PanelWidthProperty); }
    set { SetValue(PanelWidthProperty, value); }
}

// other control code

<!-- in generic.xaml -->

<Style TargetType="cyc:SomeControl">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="cyc:SomeControl">
                    <Grid x:Name="RootElement">
                        <Canvas x:Name="PanelElement" Width="{TemplateBinding PanelWidth}">
                        </Canvas>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

I set 'PanelElement's Width == PanelWidth. This is fine if the PanelWidth is an actual number but not Auto(NaN) or %s.... So my question is, how do I properly create the DependencyProperty or PanelWidth property to allow for NaNs or %s?

Thanks much!

--Brad