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C# WPF - how to add border property to a WPF button programatically in C#

Posted on 2013-06-17
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Last Modified: 2013-06-18
I am trying to create a round WPF button programmatically.  I am not sure how to attach the border property. I understand the border property is the one give round corners.

Any sample how to do that will be appreciated.
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Question by:tommym121
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Expert Comment

by:jonnidip
ID: 39255575
The border property should be set at the template level.
Here is a XAML sample of how to style your control to a button:
<Button Width="100" Height="30">
    <Button.Style>
        <Style>
            <Style.Setters>
                <Setter Property="Button.Template">
                    <Setter.Value>
                        <ControlTemplate>
                            <Border CornerRadius="10,10,10,10" BorderThickness="1,1,1,1" BorderBrush="Black"/>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style.Setters>
        </Style>
    </Button.Style>
</Button>

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If you need to create a button from code, you may want to separate the style from the control (just add a key and put it in your Window.Resources) and then apply the style to the control:
<Style x:Key="RoundButton_Style" TargetType="Button">
    <Style.Setters>
        <Setter Property="Button.Template">
            <Setter.Value>
                <ControlTemplate>
                    <Border CornerRadius="10,10,10,10" BorderThickness="1,1,1,1" BorderBrush="Black"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style.Setters>
</Style>

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Style roundButton_Style = FindResource("RoundButton_Style") as Style;
Button myButton = new Button() { Style = roundButton_Style };

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Regards.
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Author Comment

by:tommym121
ID: 39255759
I got this error

when I put the <Style> inside the <Window>

C:\Users\Eugene\documents\visual studio 2010\Projects\TempoAssist2\TestWPF\MainWindow.xaml(5,12): error MC3023: The Key attribute can only be used on a tag contained in a Dictionary (such as a ResourceDictionary). Line 5 Position 12.
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Accepted Solution

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jonnidip earned 500 total points
ID: 39255764
As I suggested, you should create a Windows.Resources section and put your style inside that section:
<Window.Resources>
    <ResourceDictionary x:Name="resourceDictionary">
        (your style here)
    </ResourceDictionary>
</Window.Resources>

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Author Closing Comment

by:tommym121
ID: 39258303
Thanks.
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LVL 13

Expert Comment

by:jonnidip
ID: 39258394
You're welcome.
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