Detailviews中关于更新日期的问题

[hdllzhi]

Protected Sub DetailsViewNewsManagement_ItemCreated(ByVal sender As Object, ByVal e As System.EventArgs) Handles DetailsViewNewsManagement.ItemCreated

Dim NewsLastUpdated As HiddenField = CType(DetailsViewNewsManagement.FindControl("HiddenFieldDateAdded"), HiddenField)

NewsLastUpdated.Value = DateTime.Now()

End Sub
我实行到NewsLastUpdated.Value = DateTime.Now()这句时，总出“未将对象引用设置到对象的实例”错误 。请问是什么原因呢？谢谢了！

[whoami333]

放到ItemDataBound事件里试一下。

[hdllzhi]

试过了，还是一样的
[Quote=引用 1 楼 whoami333 的回复:]
放到ItemDataBound事件里试一下。
[/Quote]

[hdllzhi]

搞定了，把<asp:HiddenField ID="HiddenFieldDateAdded" runat="server" Value='<%# Bind("NewsDate") %>' />放到ItemTemplate里就行了