Assembly: System (in system.dll)
[AttributeUsageAttribute(AttributeTargets::All)] public ref class AmbientValueAttribute sealed : public Attribute
/** @attribute AttributeUsageAttribute(AttributeTargets.All) */ public final class AmbientValueAttribute extends Attribute
AttributeUsageAttribute(AttributeTargets.All) public final class AmbientValueAttribute extends Attribute
If a property on a control has ambient behavior, this attribute must be present. Ambient properties query their parent for their value, for example, a Control.Font property or a Control.BackColor property.
Typically, a visual designer uses the AmbientValueAttribute attribute to decide which value to persist for a property. This is usually a value that causes the property to get its value from another source. An example of an ambient value is Color.Empty as the ambient value for the BackColor property. If you have a control on a form and the BackColor property of the control is set to a different color than the BackColor property of the form, you can reset the BackColor property of the control to that of the form by setting the BackColor of the control to Color.Empty.
The following code example demonstrates using AmbientValueAttribute to enforce ambient behavior for a property called AlertForeColor. For a full code listing, see How to: Apply Attributes in Windows Forms Controls.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.