调用DataGrid的OnItemDataBound属性
<asp:DataGrid ID="grd".. onItemDataBound="grd_DataBound" >
..
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Sub grd_DataBound(ByVal sender As Object, ByVal e As DataGridItemEventArgs)
If e.Item.ItemIndex <> -1 Then
e.Item.Attributes("onMouseOver") = "javascript:this.bgColor='#E0E0E0';"
e.Item.Attributes("onMouseOut") = "javascript:this.bgColor='#FFFFFF';"