the following is a simple way, although it looks ugly, you should be doing it in ItemDataBound event handlerchange<b>出版商 ID:</b><%# DataBinder.Eval(Container.DataItem, "pub_id") %><br>
===>
<%# DataBinder.Eval(Container.DataItem, "pub_id").ToString() != "" ? "<b>出版商 ID:</b>" + DataBinder.Eval(Container.DataItem, "pub_id").ToString() + "<br>" : "" %>
===>
<%# DataBinder.Eval(Container.DataItem, "pub_id").ToString() != "" ? "<b>出版商 ID:</b>" + DataBinder.Eval(Container.DataItem, "pub_id").ToString() + "<br>" : "" %>
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