Articolo
11/18/2011

CornerRadius Structure

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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

Namespace: System.Windows
Assembly: System.Windows (in System.Windows.dll)

Syntax

'Declaration
Public Structure CornerRadius

public struct CornerRadius

<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 properties (BottomLeft, TopLeft, TopRight, BottomRight).
topLeft
Sets the initial TopLeft.
topRight
Sets the initial TopRight.
bottomRight
Sets the initial BottomRight.
bottomLeft
Sets the initial BottomLeft.

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.

The CornerRadius type exposes the following members.

Constructors

	Name	Description
	CornerRadius(Double)	Initializes a new CornerRadius structure, applying the same uniform radius to all its corners.
	CornerRadius(Double, Double, Double, Double)	Initializes a new instance of the CornerRadius structure, applying specific radius values to its corners.

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Properties

	Name	Description
	BottomLeft	Gets or sets the radius of rounding, in pixels, of the bottom left corner of the object where a CornerRadius is applied.
	BottomRight	Gets or sets the radius of rounding, in pixels, of the bottom right corner of the object where a CornerRadius is applied.
	TopLeft	Gets or sets the radius of rounding, in pixels, of the top left corner of the object where a CornerRadius is applied.
	TopRight	Gets or sets the radius of rounding, in pixels, of the top right corner of the object where a CornerRadius is applied.

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Methods

	Name	Description
	Equals(CornerRadius)	Compares this CornerRadius structure to another CornerRadius structure for equality.
	Equals(Object)	Compares this CornerRadius structure to another object for equality. (Overrides ValueType.Equals(Object).)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns the hash code of the structure. (Overrides ValueType.GetHashCode().)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns the string representation of the CornerRadius structure. (Overrides ValueType.ToString().)

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Operators

	Name	Description
	Equality	Compares the value of two CornerRadius structures for equality.
	Inequality	Compares two CornerRadius structures for inequality.

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Remarks

Properties of CornerRadius do not support an attribute syntax in XAML for Silverlight. In XAML you should always specify CornerRadius-type properties through one of the following usages:

The XAML attribute usage, which infers properties that use the CornerRadius type and uses a type converter to process the attribute string into the specific values for the CornerRadius.
A property element usage, containing a CornerRadius object element. For that object element, set the CornerRadius properties using initialization text, as shown in the XAML Object Element Usage.

If you specify a CornerRadius for use as a resource, use the object element usage and set the CornerRadius properties using initialization text.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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