ASP.NET 2.0高级数据处理之处理控件事件

＜script runat="server"＞

protected sub gridview1_rowediting(byval sender as object, byval e as system.web.ui.webcontrols.gridviewediteventargs)
　' 用户在只读模式中点击"编辑"按钮的时候引发
　response.write("row editing...")

　' 如果gridview已经处于编辑模式，就终止编辑操作
　if not gridview1.editindex = -1 then
　　e.cancel = true
　end if
end sub

protected sub gridview1_rowupdating(byval sender as object, byval e as system.web.ui.webcontrols.gridviewupdateeventargs)
' 当用户在编辑模式中点击"更新"按钮的时候引发
　response.write("gridview: row updating...＜br/＞")
　
　'此处可以选择终止事件，例如不允许用户更新数据
　if user.isinrole("restricted") then
　　e.cancel = true
　end if
end sub

protected sub gridview1_rowupdated(byval sender as object, byval e as system.web.ui.webcontrols.gridviewupdatedeventargs)
　' 当更新操作完成所时候引发
　response.write("gridview: row updated＜br/＞")

　if not e.exception is nothing then
　　' 此处可以执行自定义的错误处理，完成之后设置exceptionhandled = true
　　e.exceptionhandled = true
　end if
　' 可以检测更新操作所影响的行数
　response.write("＜br /＞affected rows: " & server.htmlencode(e.affectedrows))
end sub

protected sub gridview1_rowcancelingedit(byval sender as object, byval e as system.web.ui.webcontrols.gridviewcancelediteventargs)
　' 当用户在编辑模式中点击"取消"按钮的时候引发
　response.write("edit canceled")
end sub

protected sub sqldatasource1_updated(byval sender as object, byval e as system.web.ui.webcontrols.sqldatasourcestatuseventargs)
　' 当更新操作完成之后引发
　response.write("sqldatasource: update complete＜br /＞")
end sub

protected sub sqldatasource1_updating(byval sender as object, byval e as system.web.ui.webcontrols.sqldatasourcecommandeventargs)
　' 调用更新操作的时候引发
　response.write("sqldatasource: updating...")
end sub
＜/script＞

protected sub detailsview1_iteminserting(byval sender as object, byval e as system.web.ui.webcontrols.detailsviewinserteventargs)
　dim f as fileupload = detailsview1.findcontrol("fileupload1")
　if f.hasfile then
　　' 保存文件
　end if
end sub

protected sub formview1_itemdeleted(byval sender as object, byval e as system.web.ui.webcontrols.formviewdeletedeventargs)
　if (e.exception is nothing) then
　　' 删除文件
　　response.redirect(e.values("albumid"))
　end if
end sub