CS0103: 当前上下文中不存在名称“GetPicPath”

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="findjobs._Default"  %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:DataList ID="DataList1" runat="server" RepeatDirection="Horizontal" 
            RepeatColumns="4" Width="384px">
                                                <ItemTemplate>
                                                    <font face="宋体">
                                                        <table id="Table8" cellspacing="0" cellpadding="1" width="150" border="0" runat="server">
                                                            <tr>
                                                                <td style="height: 28px" align="center">
                                                                    <font face="宋体">
                                                                        <asp:Image ID="Image1" runat="server" Cursor="Hand" Height="120px" Width="120px" ImageUrl='<%# GetPicPath(DataBinder.Eval(Container, "DataItem.sptpwjm").ToString()) %>' alt='<%# DataBinder.Eval(Container, "DataItem.spmc").ToString() %>'>
                                                                        </asp:Image></font></td>
                                                            </tr>
                                                           
                                                        </table>
                                                    </font>
                                                </ItemTemplate>
                                            </asp:DataList>
    </div>
    </form>
</body>
</html>