DetailsView Item Inserted Error

'System.Web.UI.WebControls.DetailsViewInsertEventArgs' does not contain a definition for 'AffectedRows' and no extension metho开发者_运维知识库d 'AffectedRows' accepting a first argument of type 'System.Web.UI.WebControls.DetailsViewInsertEventArgs' could be found (are you missing a using directive or an assembly reference?)...

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There are two different Events:

1: ItemInserting - has DetailsView*Insert*EventArgs which does not contain AffectedRows

2: ItemInserted - has DetailsView*Inserted*EventArgs which contains AffectedRows