DependencyProperty Class

 
Note: This API is now obsolete.

A special kind of property that can be defined or attached to a DependencyObject. There are three kinds of dependency properties: instance properties, meta properties, and attached properties. This class cannot be inherited.

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

System.Object
  System.Workflow.ComponentModel.DependencyProperty

[SerializableAttribute]
[ObsoleteAttribute("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public sealed class DependencyProperty : ISerializable

NameDescription
System_CAPS_pubpropertyDefaultMetadata

Gets the PropertyMetadata that represents user-defined data for this DependencyProperty.

System_CAPS_pubpropertyIsAttached

Gets the property that indicates whether this DependencyProperty is associated to a DependencyObject by registration.

System_CAPS_pubpropertyIsEvent

Gets the property that indicates whether the DependencyProperty is an event Delegate.

System_CAPS_pubpropertyName

Gets the Name of the DependencyProperty.

System_CAPS_pubpropertyOwnerType

Gets the Type of the DependencyProperty.

System_CAPS_pubpropertyPropertyType

Gets the Type of the value stored in the DependencyProperty.

System_CAPS_pubpropertyValidatorType

Gets the Type implementing validation logic specific to the DependencyProperty.

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodSystem_CAPS_staticFromName(String, Type)

Gets the registered DependencyProperty based on the Name and OwnerType.

System_CAPS_pubmethodSystem_CAPS_staticFromType(Type)

Creates an IList of type DependencyProperty that belong to a specific Type.

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Overrides Object.GetHashCode().)

System_CAPS_pubmethodGetType()

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

System_CAPS_pubmethodSystem_CAPS_staticRegister(String, Type, Type)

Initializes a new instance of the DependencyProperty class that has the properties parameterized according to the input parameters.

System_CAPS_pubmethodSystem_CAPS_staticRegister(String, Type, Type, PropertyMetadata)

Initializes a new instance of the DependencyProperty class that has the properties parameterized according to the input parameters.

System_CAPS_pubmethodSystem_CAPS_staticRegisterAttached(String, Type, Type)

Initializes a new instance of the DependencyProperty class that has the properties parameterized according to the input parameters. This instance is intended to declare properties that are used on objects other than the objects of owning type.

System_CAPS_pubmethodSystem_CAPS_staticRegisterAttached(String, Type, Type, PropertyMetadata)

Initializes a new instance of the DependencyProperty class that has the properties parameterized according to the input parameters.

System_CAPS_pubmethodSystem_CAPS_staticRegisterAttached(String, Type, Type, PropertyMetadata, Type)

Initializes a new instance of the DependencyProperty class that has the properties parameterized according to the input parameters.

System_CAPS_pubmethodToString()

Overrides the Object method to return the Name property value.(Overrides Object.ToString().)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethodISerializable.GetObjectData(SerializationInfo, StreamingContext)

Populates a SerializationInfo with the data required to serialize the target object.

System_CAPS_noteNote

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

Dependency properties support three use cases. First, if an instance property of an activity is implemented by using a dependency property, that property can be assigned an ActivityBind instead of an actual value. Second, activity properties that are metadata (that is, the value cannot change at run time) should be implemented by using dependency properties, specifying the Metadata option. Third, dependency properties support attached properties, which are properties that are applied to dependency objects dynamically.

The following example shows how to register a DependencyProperty for use by a DependencyObject. This code example is part of the Send E-mail SDK sample and is from the SendMailActivity.cs file. For more information, see Send Mail Activity.

// Define the DependencyProperty objects for all of the Properties 
// ...and Events exposed by this activity
public static DependencyProperty FromProperty = DependencyProperty.Register("From", typeof(string), typeof(SendEmailActivity), new PropertyMetadata("someone@example.com"));
public static DependencyProperty ToProperty = DependencyProperty.Register("To", typeof(string), typeof(SendEmailActivity), new PropertyMetadata("someone@example.com"));

.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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