<asp:label id=label1 runat=server visible='<%#disp(container.dataitem,"image")%>'><img src='<%#databinder.eval(container.dataitem,"image")'></asp:label>--------------- public function disp(filename as object) as boolean if filename isdbnull.value then return false else return true end if end function
DataBinder.Eval(Container, "DataItem.FaceID").ToString()!=""
public function disp(filename as object) as boolean
if filename isdbnull.value then
return false
else
return true
end if
end function
--------------
sorry,更正一下!
reader.GetValue(0) == DBNull.Value来判断和邦定了!如果协在前台的<%#里面可能要麻烦一些!这样你可以在DataTable(榜定的数据源)将那些DBNull的都变成""可能会好一些!
<img src='<%#databinder.eval(container.dataitem,"image")%>'>
select isnull(图片路径字段,'kong') from tableisnull(字段名,'1')=1如果字段为空,则为1,否则就是字段本身的值