ModelChangeInfo.OldValue 属性

定义

命名空间:

System.Activities.Presentation.Services

程序集:

System.Activities.Presentation.dll

如果其为属性更改或字典值更改，则获取旧值。

public:
 abstract property System::Activities::Presentation::Model::ModelItem ^ OldValue { System::Activities::Presentation::Model::ModelItem ^ get(); };

public abstract System.Activities.Presentation.Model.ModelItem OldValue { get; }

member this.OldValue : System.Activities.Presentation.Model.ModelItem

Public MustOverride ReadOnly Property OldValue As ModelItem

属性值

ModelItem

旧值（如果是属性更改或字典值更改）。