SPActionSequence.UpdatingProgress 事件
在升级过程中发生。
命名空间： Microsoft.SharePoint.Upgrade
程序集： Microsoft.SharePoint（位于 Microsoft.SharePoint.dll 中）
语法
声明
Public Event UpdatingProgress As EventHandler(Of SPProgressUpdateEventArgs)
用法
Dim instance As SPActionSequence
Dim handler As EventHandler(Of SPProgressUpdateEventArgs)
AddHandler instance.UpdatingProgress, handler
public event EventHandler<SPProgressUpdateEventArgs> UpdatingProgress