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ValidationOptionAttribute Class

.NET Framework 4

Custom attribute that contains ValidationOption information. This class cannot be inherited.

System.Object
  System.Attribute
    System.Workflow.ComponentModel.Compiler.ValidationOptionAttribute

Namespace:  System.Workflow.ComponentModel.Compiler
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)
C#
C++
F#
VB
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[AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Event, AllowMultiple = false, 
	Inherited = true)]
public sealed class ValidationOptionAttribute : Attribute

The ValidationOptionAttribute type exposes the following members.

  Name Description
Public method ValidationOptionAttribute Initializes a new instance of the ValidationOptionAttribute class, with a value for ValidationOption.
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  Name Description
Public property TypeId When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Public property ValidationOption Gets the value of the System.Workflow.ComponentModel.Compiler.ValidationOption associated with this instance.
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  Name Description
Public method Equals Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Returns the hash code for this instance. (Inherited from Attribute.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttribute When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method Match When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
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  Name Description
Explicit interface implemetation Private method _Attribute.GetIDsOfNames Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _Attribute.GetTypeInfo Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _Attribute.GetTypeInfoCount Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _Attribute.Invoke Provides access to properties and methods exposed by an object. (Inherited from Attribute.)
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This attribute should only be used as dependency property option. Attributes are ignored if declared on a .NET property.

The ValidationOptionAttribute is intended to be used on Meta-properties only. It will be ignored for instance properties. For more information, see Using Activity Properties for more details.

If the ValidationOptionAttribute is not specified, the behavior defaults to ValidationOption.Optional.

C#
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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);
        }
    }
}

.NET Framework

Supported in: 4, 3.5, 3.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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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