Color element in XAML results in NullReferenceException

06-21-2009 1:06 PM |

I've was working on a color picker control when I came across this problem.  Here is the simplest example.  The following causes an exception:

     <Rectangle>
        <Rectangle.Fill>
            <SolidColorBrush>
                <SolidColorBrush.Color>
                    <Color A="255" R="255" G="255" B="255" />
                </SolidColorBrush.Color>
            </SolidColorBrush>
        </Rectangle.Fill>
    </Rectangle>

     <Rectangle>
        <Rectangle.Fill>
            <SolidColorBrush Color="#FFFFFFFF">
            </SolidColorBrush>
        </Rectangle.Fill>
    </Rectangle>

I'd hoped to use template binding for the red / green / blue values in my control, which is why the second markup would be unsuitable.

Re: Color element in XAML results in NullReferenceException

06-21-2009 2:53 PM |

Hi,

if you set the Color properties in code behind it works.

Re: Color element in XAML results in NullReferenceException

06-21-2009 3:25 PM |

 Hi Davide,

 Thanks for answering.  I realize it works in code, and will work around this some other way.  However it still is a bug that should be addressed as it prevents you from using it in a control template like I'm doing.

Re: Re: Color element in XAML results in NullReferenceException

06-21-2009 3:42 PM |

Yes, I agree with you.

Re: Color element in XAML results in NullReferenceException

06-25-2009 11:32 AM |

Thanks Mog.  It's nice to know this is resolved in SL3 (unfortunately I'm stuck with SL2 for now!).

Cheers.