SourceChangedEventArgs.OldSource 属性

定义

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取此源更改中涉及的旧源。

public:
 property System::Windows::PresentationSource ^ OldSource { System::Windows::PresentationSource ^ get(); };

public System.Windows.PresentationSource OldSource { [System.Security.SecurityCritical] get; }

public System.Windows.PresentationSource OldSource { get; }

[<get: System.Security.SecurityCritical>]
member this.OldSource : System.Windows.PresentationSource

member this.OldSource : System.Windows.PresentationSource

Public ReadOnly Property OldSource As PresentationSource