ValidationOptionAttribute Class

 
Note: This API is now obsolete.

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

Namespace:   System.Workflow.ComponentModel.Compiler
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

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

<AttributeUsageAttribute(AttributeTargets.Property Or AttributeTargets.Event,
	AllowMultiple := False, Inherited := True)>
<ObsoleteAttribute("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")>
Public NotInheritable Class ValidationOptionAttribute
	Inherits Attribute

NameDescription
System_CAPS_pubmethodValidationOptionAttribute(ValidationOption)

Initializes a new instance of the ValidationOptionAttribute class, with a value for ValidationOption.

NameDescription
System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

System_CAPS_pubpropertyValidationOption

Gets the value of the System.Workflow.ComponentModel.Compiler.ValidationOption associated with this instance.

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

System_CAPS_noteNote

This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

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.

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
Available since 3.0

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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