FeatureAttribute 类

更新：2007 年 11 月

存储一个表示 FeatureProvider 类型的 Type 对象。

命名空间：  Microsoft.Windows.Design.Features
程序集：  Microsoft.Windows.Design.Extensibility（在 Microsoft.Windows.Design.Extensibility.dll 中）

语法

声明
<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Interface, AllowMultiple := True)> _
Public NotInheritable Class FeatureAttribute _
    Inherits Attribute
用法
Dim instance As FeatureAttribute

[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Interface, AllowMultiple = true)]
public sealed class FeatureAttribute : Attribute

[AttributeUsageAttribute(AttributeTargets::Class|AttributeTargets::Interface, AllowMultiple = true)]
public ref class FeatureAttribute sealed : public Attribute

public final class FeatureAttribute extends Attribute

备注

使用 FeatureAttribute 将设计时功能附加至类型。

设计器按照需要实例化在此属性中定义的功能提供程序。有关更多信息，请参见功能提供程序和功能连接器。

示例

下面的代码示例演示如何创建 FeatureAttribute 以将装饰器提供程序与控件类相关联。有关更多信息，请参见演练：创建设计时装饰器。

' Container for any general design-time metadata to initialize.
' Designers look for a type in the design-time assembly that 
' implements IRegisterMetadata. If found, designers instantiate 
' this class and call its Register() method automatically.
Friend Class Metadata
    Implements IRegisterMetadata

    ' Called by the designer to register any design-time metadata.
    Public Sub Register() Implements IRegisterMetadata.Register
        Dim builder As New AttributeTableBuilder()

        ' Add the adorner provider to the design-time metadata.
        builder.AddCustomAttributes(GetType(ButtonWithDesignTime), _
                                    New FeatureAttribute(GetType(OpacitySliderAdornerProvider)))

        MetadataStore.AddAttributeTable(builder.CreateTable())
    End Sub

End Class

// Container for any general design-time metadata to initialize.
// Designers look for a type in the design-time assembly that 
// implements IRegisterMetadata. If found, designers instantiate 
// this class and call its Register() method automatically.
internal class Metadata : IRegisterMetadata
{
    // Called by the designer to register any design-time metadata.
    public void Register()
    {
        AttributeTableBuilder builder = new AttributeTableBuilder();

        // Add the adorner provider to the design-time metadata.
        builder.AddCustomAttributes(
            typeof(ButtonWithDesignTime), 
            new FeatureAttribute(typeof(OpacitySliderAdornerProvider)));

        MetadataStore.AddAttributeTable(builder.CreateTable());
    }
}

继承层次结构

System.Object
  System.Attribute
    Microsoft.Windows.Design.Features.FeatureAttribute

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。但不保证所有实例成员都是线程安全的。

另请参见

参考

FeatureAttribute 成员

Microsoft.Windows.Design.Features 命名空间

FeatureProvider

其他资源

功能提供程序和功能连接器