DetailsVew问题(菜鸟问)？

    <div style="margin-top:7px; width:98%; margin-left:0px; text-align:left; line-height:20px">
   <asp:DetailsView
                ID="DetailsView1" runat="server" AutoGenerateRows="False" DataSourceID="ObjectDataSource1" Width="125px" BorderWidth="0px" CellPadding="0">
                <Fields>
                    <asp:TemplateField>
                        <ItemTemplate>
                            <div><img src="../images/index-img/new_index.gif" style="border:0px" /><a href="Commun_info.aspx?commun_id=<%#Eval("Commun_title")%>"><%#Eval("Commun_title")%></a></div>
                        </ItemTemplate>
                    </asp:TemplateField>
                </Fields>
            </asp:DetailsView>
            <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="FileTop"
                TypeName="Train_Server_Sql.Commun_Server_Sql">
                <SelectParameters>
                    <asp:Parameter DefaultValue="5" Name="top" Type="Int32" />
                </SelectParameters>
            </asp:ObjectDataSource>
        </div>
明明我的数据有五条，界面却只显示一条，请问这是... ...?
在线等，我很菜！