Asp.Net（C＃）内联编码再一个eval Merge

Question

如何再进行一次eval合并？

<asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Eval("Name"),Eval("Surname"),Eval("Mail")%>'/>

Answer 1

尝试

<asp:HiddenField ID="HiddenField1" runat="server" Value='<%# Eval("Name") + "," + Eval("Surname") + "," + Eval("Mail")%>'/>