ContextItem.OnItemChanged Method

Called on a context item before it is stored in the context item manager.

Namespace:  Microsoft.Windows.Design
Assembly:  Microsoft.Windows.Design.Extensibility (in Microsoft.Windows.Design.Extensibility.dll)

Syntax

'Declaration
Protected Overridable Sub OnItemChanged ( _
    context As EditingContext, _
    previousItem As ContextItem _
)

protected virtual void OnItemChanged(
    EditingContext context,
    ContextItem previousItem
)

protected:
virtual void OnItemChanged(
    EditingContext^ context, 
    ContextItem^ previousItem
)

abstract OnItemChanged : 
        context:EditingContext * 
        previousItem:ContextItem -> unit 
override OnItemChanged : 
        context:EditingContext * 
        previousItem:ContextItem -> unit 

protected function OnItemChanged(
    context : EditingContext, 
    previousItem : ContextItem
)

Parameters

• context
  Type: Microsoft.Windows.Design.EditingContext
  The editing context that is making this change.

• previousItem
  Type: Microsoft.Windows.Design.ContextItem
  The previously active item in the context.

Remarks

The previous item in the context item manager is passed in as a parameter. Because items must have default constructors, a default item is fabricated if an item is first passed in to the context.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

ContextItem Class

Microsoft.Windows.Design Namespace

ContextItemManager

ServiceManager

FeatureManager

Other Resources

Editing Context Architecture

Understanding WPF Designer Extensibility