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WPF x:static and brushes/colors

Posted on 2010-11-07
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Last Modified: 2013-11-12
I'm working with a training course and it is throwing an error about not completing the exercises propertly.

In a nut shell, I need to define brushes using the x:Static syntax, and while what I wrote works, it is telling me that I'm using the wrong classes.

I built the XAML using this:
<Rectangle Grid.Row="1" Fill="{x:Static SystemColors.GrayTextBrush}"></Rectangle>

And the error is this:
"The Rectangle is not filled with a color from the Colors class."

I've got another one for a border that says:
"The Border element in the SampleWindow.xaml file does not specify a background color using any brush in the Brushes class."


What do I need to change here?
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Question by:PixelMuse
  • 2
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4 Comments
 
LVL 27

Expert Comment

by:MikeToole
ID: 34083638
Does the course material insist on using the x:static syntax? I would code it as:
<Rectangle Grid.Row="1" Fill="Gray"></Rectangle>

Can you post the xaml for the border that's giving problems
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Author Comment

by:PixelMuse
ID: 34083653
Yes, it says to use the x:static syntax. Here is the whole little layout lesson, so you can see what it is asking for. The border code is there too.
<Window x:Class = "Task.SampleWindow"

		xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

		xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

		Title="SampleWindow" Height="302" Width="574">

	<Grid Name="windowGrid">

		<Grid.RowDefinitions>

			<RowDefinition Height="*" />

			<RowDefinition Height="*" />

		</Grid.RowDefinitions>

        <Border Background="{x:Static SystemColors.HighlightTextBrush }" Padding="5">

            <Button>

                <Button.Background>

                    <ImageBrush ImageSource="logo.gif"/>

                </Button.Background>

            </Button>

        </Border>

        

        <Rectangle Grid.Row="1" Fill="{x:Static SystemColors.GrayTextBrush}"></Rectangle>

            <!--

			Todo:

			The SampleWindow.xaml XAML file declares a single Border element within the

			 <Grid> tags that uses markup extension syntax to specify a background color

			 using any brush in the Brushes class. The Border element has padding of 5 units

			 on each side.

		-->

		<!--

			Hint:

			There are a variety of ways to set the Background property of a Border object, but 

			 you should look at the x:Static reference provided in the links section for an 

			 example of the syntax required.

		-->

		

		<!--

			Todo:

			The Border element declared in the SampleWindow.xaml XAML file contains a Button

		 	 control as a child element. The Button control uses property element syntax to

		 	 set the background property to an ImageBrush Brush with an ImageSource property

		 	 of logo.gif.

		-->



		<!-- 

			Hint 

			To create an ImageBrush brush with ImageSource property of logo.gif

			 you can use the following markup: <ImageBrush ImageSource="logo.gif" />

		-->





		<!--

			Todo:

			The SampleWindow.xaml XAML file declares a Rectangle element within the <Grid>

			 tags, which is filled with any color defined on the Colors class using attribute

			 syntax.

		-->



		<!--

			Todo:

			The Rectangle declared in the SampleWindow.xaml XAML file is assigned to the

			 second row of the containing grid, using attached property syntax.

		-->

		

		<!--

			Hint:

			The rows and columns of a Grid control are identified using a zero-based index. 

			 You should take this into account when assigning a control to a particular row 

			 or column.

		-->



	</Grid>

</Window>

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LVL 27

Accepted Solution

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MikeToole earned 500 total points
ID: 34083812
It asks to select a member of the Brushes class, not SysttemColors, try this:
Fill="{x:Static Brushes.Gray}"
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Author Closing Comment

by:PixelMuse
ID: 34132129
I don't know why I didn't try that. I start typing "Brushes", but intellisense didn't pick it up so I decided not to continue.

Thanks.
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