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dropdownlist改变不已被选中的值

分类: IT文章 • 2024-05-24 22:41:54
dropdownlist改变不了被选中的值

            var date = new Date();
            var day = "";
            var month = "";
            if (date.getDate() < 10) {
                day = "0" + date.getDate().toString();
            }
            else {
                day = date.getDate().toString();
            }
            if (date.getMonth() < 9) {
                month = "0" + (date.getMonth() + 1).toString();
            }
            else {
                month = (date.getMonth() + 1).toString();
            }
            var result = date.getFullYear() + "年" + month + "月" + day + "日";
            $(document).ready(function () {
                $("#TextBox1").val(result);
            })
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <table width="100%" border="0" cellpadding="0" cellspacing="0">
  <tr>
    <td width="17" valign="top" background="images/mail_leftbg.gif"><img src="images/left-top-right.gif" width="17" height="29" /></td>
    <td valign="top" background="images/content-bg.gif"><table width="100%" height="31" border="0" cellpadding="0" cellspacing="0" class="left_topbg" id="table2">
      <tr>
        <td height="31"><div class="titlebt">车位设置</div></td>
      </tr>
    </table></td>
    <td width="16" valign="top" background="images/mail_rightbg.gif"><img src="images/nav-right-bg.gif" width="16" height="29" /></td>
  </tr>
  <tr>
    <td valign="middle" background="images/mail_leftbg.gif">&nbsp;</td>
    <td valign="top" bgcolor="#F7F8F9">
        <table cellpadding="0" cellspacing="0" width="800px">
            <tr>
                <td height="30px">
                &nbsp;时间：
                    <asp:TextBox ID="TextBox1" runat="server" onfocus="WdatePicker({minDate:'%y-%M-#{%d+1}', dateFmt:'yyyy年MM月dd日'})" 
            CssClass="Wdate" Height="25px" onclick="aa()" ></asp:TextBox>
                </td>
                </tr>
                <tr>
                <td height="30px"> &nbsp;全&nbsp;部：<asp:DropDownList ID="dropall" runat="server" Width="100px">
                        <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
                        <asp:ListItem>4</asp:ListItem>
                        <asp:ListItem>5</asp:ListItem>
                        <asp:ListItem>6</asp:ListItem>
                    </asp:DropDownList></td></tr>
                <tr>
                <td height="30px"> &nbsp;09:00：<asp:DropDownList ID="dropnine" runat="server" Width="100px">

                        <asp:ListItem>3</asp:ListItem>
                        <asp:ListItem>4</asp:ListItem>
                        <asp:ListItem>5</asp:ListItem>
                        <asp:ListItem>6</asp:ListItem>
                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;10:00：<asp:DropDownList ID="dropten" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
                        <asp:ListItem>4</asp:ListItem>
                        <asp:ListItem>5</asp:ListItem>
                        <asp:ListItem>6</asp:ListItem>
                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;11:00：<asp:DropDownList ID="dropele" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
                        <asp:ListItem>4</asp:ListItem>
                        <asp:ListItem>5</asp:ListItem>
                        <asp:ListItem>6</asp:ListItem>
                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;12:00：<asp:DropDownList ID="droptw" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>

                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;13:00：<asp:DropDownList ID="tropthir" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>

                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;14:00：<asp:DropDownList ID="dropfour" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
    
                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;15:00：<asp:DropDownList ID="dropfive" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
    
                    </asp:DropDownList></td></tr>
                <tr>
                    <td height="30px"> &nbsp;16:00：<asp:DropDownList ID="dropsix" runat="server" Width="100px">
                    <asp:ListItem>    </asp:ListItem>
                        <asp:ListItem>3</asp:ListItem>
                        <asp:ListItem>4</asp:ListItem>
                        <asp:ListItem>5</asp:ListItem>
                        <asp:ListItem>6</asp:ListItem>
                    </asp:DropDownList></td>
            </tr>
                <tr height="30px">
            <td>&nbsp;<asp:Button ID="btnset" runat="server" Text="设置" Width="60px" 
                        onclick="btnset_Click" /></td>
            </tr>





            if (!IsPostBack)
            {
                //Init();
                Show("");
            }
            if (Request.Form["rq"] != null)
            {
                string str = Request.Form["rq"].ToString();
                show2(Request.Form["rq"].ToString());
            }

        public void show2(string day)
        {
            string[] str = new string[] { "09:00", "11:00", "12:00", "13:00", "14:00", "15:00", "16:00" };
            for (int i = 0; i < str.Length; i++)
            {
                string sql1 = "select position from cwsz where day='" + day + "' and sjd='" + str[i] + "'";
                var dt1 = db.ExecuteQuery(sql1);
                if (dt1.Rows.Count > 0)
                {
                    if (dt1.Rows[0]["position"] != null)
                    {
                        if (str[i] == "09:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                dropnine.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                dropnine.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                dropnine.SelectedIndex = 3;
                            else
                                dropnine.SelectedIndex = 4;

                        }
                        if (str[i] == "10:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                dropten.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                dropten.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                dropten.SelectedIndex = 3;
                            else
                                dropten.SelectedIndex = 4;
                        }
                        if (str[i] == "11:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                dropele.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                dropele.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                dropele.SelectedIndex = 3;
                            else
                                dropele.SelectedIndex = 4;
                        }
                        if (str[i] == "12:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                droptw.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                droptw.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                droptw.SelectedIndex = 3;
                            else
                                droptw.SelectedIndex = 4;
                        }
                        if (str[i] == "13:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                tropthir.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                tropthir.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                tropthir.SelectedIndex = 3;
                            else
                                tropthir.SelectedIndex = 4;
                        }
                        if (str[i] == "14:00")
                        {
                            if (dt1.Rows[0]["position"].ToString() == "3")
                                dropfour.SelectedIndex = 1;
                            else if (dt1.Rows[0]["position"].ToString() == "4")
                                dropfour.SelectedIndex = 2;
                            else if (dt1.Rows[0]["position"].ToString() == "5")
                                dropfour.SelectedIndex = 3;
                            else
                                dropfour.SelectedIndex = 4;
                        }



求各位帮忙看看 我为什么点击textbox1之后，下拉框大的值不会改变？
------解决思路----------------------
你的代码帖得很多，又是直接帖为文本，别人很难看得清。
下面是教你怎样在论坛帖代码：
dropdownlist改变不已被选中的值

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