SPActionSequence.PreUpgrade method
實作IUpgrader.Upgrade方法之前，請執行由 SharePoint 升級基礎結構。
Namespace: Microsoft.SharePoint.Upgrade
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Syntax
'宣告
Public Overrides Sub PreUpgrade
'用途
Dim instance As SPActionSequence
instance.PreUpgrade()
public override void PreUpgrade()
Implements
備註
物件要升級時呼叫此方法，SharePoint 升級基礎結構會呼叫PreUpgrade()方法SPSequence類別其TargetUpgradableObjectAttribute找出要升級的物件類型。每個序列類別呼叫PreUpgrade()方法的順序是任意的。