runat="server" Width="102px"></asp:TextBox>
                                起始日期:<asp:DropDownList ID="nian" runat="server"
                                    onselectedindexchanged="nian_SelectedIndexChanged">
                                </asp:DropDownList>
                                <asp:DropDownList ID="yue" runat="server">
                                </asp:DropDownList>
                                <asp:DropDownList ID="ri" runat="server">
                                </asp:DropDownList>终止日期:<asp:DropDownList ID="nian2" runat="server">
                                </asp:DropDownList>
                                <asp:DropDownList ID="yue2" runat="server">
                                </asp:DropDownList>
                                <asp:DropDownList ID="ri2" runat="server">
                                </asp:DropDownList>
                                <asp:CheckBox ID="CheckBox1" runat="server" />
                                <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="搜索" />
                                <asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False" 企业ERP管理软件采购管理采购合同子模块的设计与开发(21):http://www.youerw.com/jisuanji/lunwen_2109.html