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ComponentChangedEventArgs Class

 

Provides data for the ComponentChanged event. This class cannot be inherited.

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

System.Object
  System.EventArgs
    System.ComponentModel.Design.ComponentChangedEventArgs

[<Sealed>]
[<ComVisibleAttribute(true)>]
[<HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)>]
[<PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")>]
type ComponentChangedEventArgs = 
    class
        inherit EventArgs
    end

NameDescription
System_CAPS_pubmethodComponentChangedEventArgs(Object, MemberDescriptor, Object, Object)

Initializes a new instance of the ComponentChangedEventArgs class.

NameDescription
System_CAPS_pubpropertyComponent

Gets the component that was modified.

System_CAPS_pubpropertyMember

Gets the member that has been changed.

System_CAPS_pubpropertyNewValue

Gets the new value of the changed member.

System_CAPS_pubpropertyOldValue

Gets the old value of the changed member.

NameDescription
System_CAPS_pubmethodEquals(Object)

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

System_CAPS_pubmethodGetHashCode()

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

System_CAPS_pubmethodGetType()

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

System_CAPS_pubmethodToString()

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

ComponentChangedEventArgs provides data for a ComponentChanged event. The ComponentChanged event notifies the IComponentChangeService and registered event handlers that a particular component in the currently active document has been changed.

A ComponentChangedEventArgs provides the following information:

  • A Component property that indicates the component that was modified.

  • A Member property that indicates the member that was changed.

  • A NewValue property that indicates the new value of the member.

  • An OldValue property that indicates the old value of the member.

Component designers typically raise the ComponentChanged event automatically when components are added, removed, or modified. A ComponentChanged event is not raised during form load and unload because changes at this time are expected. A component designer might raise the ComponentChanged event after it changes a property of the component; this ensures that the Properties window will display the updated property.

Notes to Inheritors:

A compiler error occurs if this class is specified as the base class of another class.

The following example demonstrates creating a ComponentChangedEventArgs.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1

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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