UndoEngine.UndoUnit Class
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UndoEngine.UndoUnit Class

 

Encapsulates a unit of work that a user can undo.

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

System.Object
  System.ComponentModel.Design.UndoEngine.UndoUnit

protected class UndoUnit

NameDescription
System_CAPS_pubmethodUndoEngine.UndoUnit(UndoEngine, String)

Initializes a new instance of the UndoEngine.UndoUnit class.

NameDescription
System_CAPS_pubpropertyIsEmpty

Gets a value indicating whether the UndoEngine.UndoUnit contains no events.

System_CAPS_pubpropertyName

Gets the name of the UndoEngine.UndoUnit.

System_CAPS_protpropertyUndoEngine

Gets the parent UndoEngine.

NameDescription
System_CAPS_pubmethodClose()

Receives a call from the undo engine to close this unit.

System_CAPS_pubmethodComponentAdded(ComponentEventArgs)

Receives a call from the UndoEngine in response to a ComponentAdded event.

System_CAPS_pubmethodComponentAdding(ComponentEventArgs)

Receives a call from the UndoEngine in response to a ComponentAdding event.

System_CAPS_pubmethodComponentChanged(ComponentChangedEventArgs)

Receives a call from the UndoEngine in response to a ComponentChanged event.

System_CAPS_pubmethodComponentChanging(ComponentChangingEventArgs)

Receives a call from the UndoEngine in response to a ComponentChanging event.

System_CAPS_pubmethodComponentRemoved(ComponentEventArgs)

Receives a call from the UndoEngine in response to a ComponentRemoved event.

System_CAPS_pubmethodComponentRemoving(ComponentEventArgs)

Receives a call from the UndoEngine in response to a ComponentRemoving event.

System_CAPS_pubmethodComponentRename(ComponentRenameEventArgs)

Receives a call from the UndoEngine in response to a ComponentRename event.

System_CAPS_pubmethodEquals(Object)

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

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_protmethodGetService(Type)

Gets an instance of the requested service.

System_CAPS_pubmethodGetType()

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

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a String that represents the current name of the unit.(Overrides Object.ToString().)

System_CAPS_pubmethodUndo()

Performs an undo or redo action.

System_CAPS_protmethodUndoCore()

Called by Undo to perform an undo action.

The UndoEngine.UndoUnit class is a nested class within UndoEngine that encapsulates an action that a user can undo. The default UndoEngine.UndoUnit implementation monitors change notifications and builds up a list of events for each change. It saves these events using IDesignerSerializationService. An UndoEngine.UndoUnit receives event notifications for changes directly from UndoEngine through several publicvirtual methods. You can derive from UndoEngine.UndoUnit and perform any additional logic. If desired, you can completely bypass the default UndoEngine.UndoUnit implementation.

.NET Framework
Available since 2.0

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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