调试易

有一个项目， 查询中要求精确到  分   我找了个脚本时间控件   只能精确到天，   于是我打算写下拉  把时、分  写进下拉 里面去 让用户选择。
以下是后台代码：        //为时、分 ,WebChart的颜色 赋值
        private void GetDropDown()
        {
            for (int i = 0; i < 24; i++)
            {
                string addTime = i.ToString();
                this.DropStartHours.Items.Add(new ListItem(addTime + "时", addTime));
                this.DropEndHours.Items.Add(new ListItem(addTime + "时", addTime));
                this.DropWebChartStartTime_Hours.Items.Add(new ListItem(addTime + "时", addTime));
                this.DropWebChartEndTime_Hours.Items.Add(new ListItem(addTime + "时", addTime));
            }
            for (int i = 0; i < 60; i++)
            {
                string addTime = i.ToString();
                this.DropStartMinutes.Items.Add(new ListItem(addTime + "分", addTime));
                this.DropEndMinutes.Items.Add(new ListItem(addTime + "分", addTime));
                this.DropWebChartStartTime_Minutes.Items.Add(new ListItem(addTime + "分", addTime));
                this.DropWebChartEndTime_Minutes.Items.Add(new ListItem(addTime + "分", addTime));
            }
        }我也有想过 把这些添加时分在HTML中添加进去  如下：<asp:DropDownList ID="DropWebChartStartTime_Hours" runat="server" 
                                        ToolTip="将数据查询的时候精确到小时" >
                                        <asp:ListItem Value="1">1时</asp:ListItem>
                                        <asp:ListItem Value="2">2时</asp:ListItem>
                                        <asp:ListItem Value="3">3时</asp:ListItem>
                                        <asp:ListItem Value="4">4时</asp:ListItem>
                                        <asp:ListItem Value="5">5时</asp:ListItem>
                                        <asp:ListItem Value="6">6时</asp:ListItem>
                                        <asp:ListItem Value="7">7时</asp:ListItem>
                                        <asp:ListItem Value="8">8时</asp:ListItem>
                                        <asp:ListItem Value="9">9时</asp:ListItem>
                                        <asp:ListItem Value="10">10时</asp:ListItem>
                                        <asp:ListItem Value="11">11时</asp:ListItem>
                                        <asp:ListItem Value="12">12时</asp:ListItem>
                                        <asp:ListItem Value="13">13时</asp:ListItem>
                                        <asp:ListItem Value="14">14时</asp:ListItem>
                                        <asp:ListItem Value="15">15时</asp:ListItem>
                                        <asp:ListItem Value="16">16时</asp:ListItem>
                                        <asp:ListItem Value="17">17时</asp:ListItem>
                                        <asp:ListItem Value="18">18时</asp:ListItem>
                                        <asp:ListItem Value="19">19时</asp:ListItem>
                                        <asp:ListItem Value="20">20时</asp:ListItem>
                                        <asp:ListItem Value="21">21时</asp:ListItem>
                                        <asp:ListItem Value="22">22时</asp:ListItem>
                                        <asp:ListItem Value="23">23时</asp:ListItem>
                                        <asp:ListItem Value="24">24时</asp:ListItem>
                                    </asp:DropDownList>HTML代码 如果把分也写下去的话  看起来很繁琐 我想请教路过的各位大侠     这两种方法哪种效果比较好呢？   用HTML代码是否会更快一些？    如果各位知道的话  麻烦说明下原因   在此先谢谢啦  
  如果有条件的话，贴一些代码优化的链接 什么的给我最好啦