How can I define a variable in XAML?

Question

I have the following two buttons in XAML:

<Button Content="Previous"         Margin="10,0,0,10"/> <Button Content="Next"         Margin="0,0,10,10"/> 

How can I define "10" to be a variable so I can change it in one place, something like this:

PSEUDO CODE:

<variable x:key="theMargin"/> <Button Content="Previous"         Margin="{Variable theMargin},0,0,{Variable theMargin}"/> <Button Content="Next"         Margin="0,0,{Variable theMargin},{Variable theMargin}"/> 

Answer 1

Try this:

add to the head of the xamlfile

xmlns:System="clr-namespace:System;assembly=mscorlib" 

Then Add this to the resource section:

<System:Double x:Key="theMargin">2.35</System:Double> 

Lastly, use a thickness on the margin:

<Button Content="Next">    <Button.Margin>       <Thickness Top="{StaticResource theMargin}" Left="0" Right="0"                   Bottom ="{StaticResource theMargin}" />    </Button.Margin> </Button> 

A lot of system types can be defined this way: int, char, string, DateTime, etc

Note: You're right... Had to do some better testing.. changed to code so that it should work