CornerRadius structure

Describes the characteristics of a rounded corner, such as can be applied to a Border.

Syntax

public struct CornerRadius

<CornerRadius>uniformRadius</CornerRadius>
-or-
<CornerRadius>topLeft,topRight,bottomRight,bottomLeft</CornerRadius>

<object property="uniformRadius"/>
- or -
<object property="topLeft,topRight,bottomRight,bottomLeft"/>

XAML Values

uniformRadius

A value that specifies a uniform radius. The uniformRadius value is applied to all four CornerRadius values (BottomLeft, TopLeft, TopRight, BottomRight).

topLeft

Sets the initial TopLeft.

topRight

Sets the initial TopRight.

bottomRight

Sets the initial BottomRight.

bottomLeft

Sets the initial BottomLeft.

Attributes

VersionAttribute(NTDDI_WIN8)

WebHostHiddenAttribute()

Members

The CornerRadius structure has these types of members:

• Constructors
• Fields
• Methods
• Operators
• Properties

Constructors

The CornerRadius structure has these constructors.

Fields

The CornerRadius structure has these fields.

Methods

The CornerRadius structure has these methods. It also inherits methods from the Object class.

Operators

The CornerRadius structure has these operators.

Properties

The CornerRadius structure has these properties.

Remarks

Notes on XAML syntax

Although you can specify a CornerRadius as an object element, you cannot specify the individual values such as BottomLeft as attributes of that object element. The XAML parser does not support setting XAML attribute values for this structure. Instead, you must specify the values as initialization text within the CornerRadius. Using the object element syntax for a CornerRadius is useful if you want to declare a keyed resource that can be used by multiple Border instances for their Border.CornerRadius. For more info on XAML initialization text, see Basic XAML syntax guide.

If you specify an attribute string or initialization text with two or three values, only the first value is respected and is treated as the uniformRadius (the other values are ignored). You must specify all four values to use a different behavior than uniformRadius.

You can use a space rather than a comma as the delimiter between values.

Projection and members of CornerRadius

If you are using a Microsoft .NET language (C# or Microsoft Visual Basic), or in Visual C++ component extensions (C++/CX), then CornerRadius has non-data members available, and its data members are exposed as read-write properties, not fields.

If you are programming with C++ using the Windows Runtime Template Library (WRL), then only the data member fields exist as members of CornerRadius, and you cannot use the utility methods or properties listed in the members table. WRL code can access similar utility methods that exist on the CornerRadiusHelper class.

Examples

This XAML example shows several styles of Border using different CornerRadius values:

    <StackPanel>
        <Border Height="30" Width="200" CornerRadius="0" 
         BorderThickness="2" BorderBrush="Red" Margin="5">
            <TextBlock>CornerRadius: 0</TextBlock>
        </Border>
        <Border Height="30" Width="200" CornerRadius="5" 
         BorderThickness="2" BorderBrush="Red" Margin="5">
            <TextBlock>CornerRadius: 5</TextBlock>
        </Border>
        <Border Height="30" Width="200" CornerRadius="5,0,5,0" 
         BorderThickness="2" BorderBrush="Red" Margin="5">
            <TextBlock>CornerRadius: 5,0,5,0</TextBlock>
        </Border>
        <Border Height="30" Width="200" CornerRadius="5,5,0,0" 
         BorderThickness="2" BorderBrush="Red" Margin="5">
            <TextBlock>CornerRadius: 5,5,0,0</TextBlock>
        </Border>
    </StackPanel>

The XAML produces this rendered output:

Requirements

Build date: 1/31/2013