显示15个字,多于15个字, 用...表示
<asp:TemplateField HeaderText="**介绍">
<ItemStyle HorizontalAlign="Left" />
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" DataTextField="Introduce" HeaderText="** 介绍" Text= <%# Convert.ToString(Eval("Introduce")).Length> 15?Convert.ToString(Eval("Introduce")).Substring(0,15)+"...":Eval("Introduce") %>/>
</ItemTemplate>
</asp:TemplateField>