How do I set the FallbackValue for a Binding on UIElement.Margin?

Question

Consider the following bit of code:

<UserControl x:Name=root>
....
    <TextBlock Text="Hello World" Margin="{Binding ElementName=root, Path=LeftButtonMargin}"/>
....
</UserControl>

Now, what is the syntax for setting the FallBackvalue on the Binding?
I've tried some different options already, but I cannot seem to find the correct syntax:

Margin="{Binding ElementName=root, Path=LeftButtonMargin, FallBackValue={}10,10,0,0}"
Margin="{Binding ElementName=root, Path=LeftButtonMargin, FallBackValue={}{10,10,0,0}}"
Margin="{Binding ElementName=root, Path=LeftButtonMargin, FallBackValue={}"10,10,0,0"}"

Or is this not possible at all? Basically, I need these values at design time...

score 9 · Answer 1 · answered Aug 26 '16 at 06:06

9

More simple: use single quotes

Margin="{Binding ElementName=root, Path=LeftButtonMargin, FallBackValue='10,10,0,0'}"

answered Aug 26 '16 at 06:06

serges_newj

795
1
13
23

The accepted answer for multiple and different margins – DelusionX Nov 30 '20 at 11:57

score 7 · Accepted Answer · answered Nov 12 '12 at 15:59

7

Hopefully works,

<UserControl.Resources>
 <Thickness x:Key="MyMargin" Bottom="5" Top="10">

 </Thickness>
<UserControl.Resources>


<TextBlock Text="Hello World" 
Margin="{Binding ...,FallBackValue={StaticResource MyMargin}}"/>

answered Nov 12 '12 at 15:59

Davut Gürbüz

5,526
4
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83

score 2 · Answer 3 · answered Nov 12 '12 at 16:02

2

This is works for me:

    <TextBlock Text="Hello World">
        <TextBlock.Margin>
            <Binding ElementName="root" Path="LeftButtonMargin" FallbackValue="10, 10, 0, 0" />
        </TextBlock.Margin>
    </TextBlock>

but its rather big...

answered Nov 12 '12 at 16:02

stukselbax

5,855
3
32
54

How do I set the FallbackValue for a Binding on UIElement.Margin?

3 Answers3

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