ValidationOptionAttribute 类

定义

警告

此 API 现已过时。

包含 ValidationOption 信息的自定义属性。Custom attribute that contains ValidationOption information. 无法继承此类。This class cannot be inherited.

public ref class ValidationOptionAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Event | System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)]
public sealed class ValidationOptionAttribute : Attribute
[System.Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
[System.AttributeUsage(System.AttributeTargets.Event | System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)]
public sealed class ValidationOptionAttribute : Attribute
type ValidationOptionAttribute = class
    inherit Attribute
Public NotInheritable Class ValidationOptionAttribute
Inherits Attribute
继承
ValidationOptionAttribute
属性

注解

备注

本材料讨论的类型和命名空间已废弃不用。This material discusses types and namespaces that are obsolete. 有关详细信息,请参阅 Windows Workflow Foundation 4.5 中弃用的类型For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

此属性只应用作依赖项属性选项。This attribute should only be used as dependency property option. 如果在 .NET 属性上声明,则将忽略属性。Attributes are ignored if declared on a .NET property.

ValidationOptionAttribute 仅用于元属性。The ValidationOptionAttribute is intended to be used on Meta-properties only. 对于实例属性,它将被忽略。It will be ignored for instance properties. 有关详细信息,请参阅使用活动属性了解更多详细信息。For more information, see Using Activity Properties for more details.

如果未指定 ValidationOptionAttribute,则该行为将默认为 ValidationOption.OptionalIf the ValidationOptionAttribute is not specified, the behavior defaults to ValidationOption.Optional.

public sealed partial class Activity1: Activity  
{  
    public Activity1()  
    {  
    }  
  
    public static DependencyProperty MyPropertyProperty =   
        DependencyProperty.Register(  
            "MyProperty",   
            typeof(string),   
            typeof(Activity1),  
            new PropertyMetadata(  
                DependencyPropertyOptions.Metadata,  
                new ValidationOptionAttribute(ValidationOption.Required)));  
  
    [Browsable(true)]  
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]  
    public string MyProperty  
    {  
        get  
        {  
            return ((string)(base.GetValue(Activity1.MyPropertyProperty)));  
        }  
        set  
        {  
            base.SetValue(Activity1.MyPropertyProperty, value);  
        }  
    }  
}  

构造函数

ValidationOptionAttribute(ValidationOption)

使用 ValidationOptionAttribute 的值初始化 ValidationOption 类的新实例。Initializes a new instance of the ValidationOptionAttribute class, with a value for ValidationOption.

属性

TypeId

在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(继承自 Attribute)
ValidationOption

获取与此实例关联的 ValidationOption 值。Gets the value of the ValidationOption associated with this instance.

方法

Equals(Object)

返回一个值,该值指示此实例是否与指定的对象相等。Returns a value that indicates whether this instance is equal to a specified object.

(继承自 Attribute)
GetHashCode()

返回此实例的哈希代码。Returns the hash code for this instance.

(继承自 Attribute)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
IsDefaultAttribute()

在派生类中重写时,指示此实例的值是否是派生类的默认值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(继承自 Attribute)
Match(Object)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(继承自 Attribute)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(继承自 Object)

显式接口实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(继承自 Attribute)

适用于