Please help i have added a photo upload control on my webpage but when i open the modal popup it does not show please help
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="StudentSearch.aspx.vb" Inherits="SMIS2022WEB.StudentSearch" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
    <script src="ASPSnippets_Pager.min.js"></script>
    <script type="text/javascript">
    function Showalert() {
        alert('Call JavaScript function from codebehind');
    }
</script>
    <script type="text/javascript">
        $(function () {
            GetCustomers(1);
            $("body").on("keyup", "[id*=txtSearch]", function () {
                GetCustomers(parseInt(1));
            });
            $("body").on("click", ".Pager .page", function () {
                GetCustomers(parseInt($(this).attr('page')));
            });
        });
 
        function SearchTerm() {
            return jQuery.trim($("[id*=txtSearch]").val());
        };
        function GetCustomers(pageIndex) {
            $.ajax({
                type: "POST",
                url: "StudentSearch.aspx/GetCustomers",
                data: '{searchTerm: "' + SearchTerm() + '", pageIndex: ' + pageIndex + '}',
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: OnSuccess,
                failure: function (response) {
                    alert(response.d);
                },
                error: function (response) {
                    alert(response.d);
                }
            });
        }
        var row;
        function OnSuccess(response) {
            var xmlDoc = $.parseXML(response.d);
            var xml = $(xmlDoc);
            var customers = xml.find("Customers");
            if (row == null) {
                row = $("[id*=SearchGrid] tr:last-child").clone(true);
            }
            var footer = $("[id*=SearchGrid] tr:last-child").clone(true);
            $("[id*=SearchGrid] tr").not($("[id*=SearchGrid] tr:first-child")).remove();
            if (customers.length > 0) {
                $.each(customers, function () {
                    var customer = $(this);
                    $("td", row).eq(0).html($(this).find("ADMNO").text());
                    $("td", row).eq(1).html($(this).find("Name").text());
                    $("td", row).eq(2).html($(this).find("Class").text());
                    $("td", row).eq(3).html($(this).find("Stream").text());
                    $("td", row).eq(4).html($(this).find("SEX").text());
                    $("td", row).eq(5).html($(this).find("STATUS").text());
                    $("td", row).eq(6).html($(this).find("studenttype").text());
                    $("td", row).eq(7).html($(this).find("House").text());
                    $("td", row).eq(8).html("<a href='javascript:;' onclick='GetData(this)'>Select</a>");
                    $("[id*=SearchGrid]").append(row);
                    row = $("[id*=SearchGrid] tr:last-child").clone(true);
                });
                $("[id*=SearchGrid]").append(footer);
                var pager = xml.find("Pager");
                $(".Pager").ASPSnippets_Pager({
                    ActiveCssClass: "current",
                    PagerCssClass: "pager",
                    PageIndex: parseInt(pager.find("PageIndex").text()),
                    PageSize: parseInt(pager.find("PageSize").text()),
                    RecordCount: parseInt(pager.find("RecordCount").text())
                });
 
                $(".Name").each(function () {
                    var searchPattern = new RegExp('(' + SearchTerm() + ')', 'ig');
                    $(this).html($(this).text().replace(searchPattern, "<span class = 'highlight'>" + SearchTerm() + "</span>"));
                });
            } else {
                var empty_row = row.clone(true);
                $("td:first-child", empty_row).attr("colspan", $("td", row).length);
                $("td:first-child", empty_row).attr("align", "center");
                $("td:first-child", empty_row).html("No records found for the search criteria.");
                $("td", empty_row).not($("td:first-child", empty_row)).remove();
                $("[id*=SearchGrid]").append(empty_row);
            }
        };
 
        function GetData(ele) {
            var row = $(ele).closest('tr');
            var id = $("td", row).eq(0).html();
            var name = $("td", row).eq(1).html();
            var city = $("td", row).eq(2).html();
            var country = $("td", row).eq(3).html();
            var Sex = $("td", row).eq(4).html();
            var Stats = $("td", row).eq(5).html();
            var stdtype = $("td", row).eq(6).html();
            var House = $("td", row).eq(7).html();
            $('[id*=hfId]').val(id);
            $('[id*=lblId]').html(id);
            $('[id*=txtName]').val(name);
            $('[id*=ddlClass]').val(city);
            $('[id*=txtCountry]').val(country);
            $('[id*=txtCity]').val(Stats);
            $('[id*=txtHouse]').val(House);
            $('[id*=admno]').val(id);
            $('[id*=ddlsex]').val(Sex);
            $('[id*=ddlStudentType]').val(stdtype);
            $('[id*=myModal]').modal('show');
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <asp:Panel ID="Panel1" runat="server" Style="background-color: #FFFFFF" Height="600px" BorderColor="#6699FF" BorderStyle="Double" Font-Size="Medium">
                   
            
              <table class="auto-style1">              
                </tr>
                    <tr>
                        <td class="auto-style32" style="background-color: #FFFFFF">
                            <table class="auto-style1">
                                <tr>
                                    <td>
                                        Student Search
                                        <asp:TextBox ID="txtSearch" runat="server"></asp:TextBox>
                                        <br />
                                    </td>
                                    <td> </td>
                                    <td> </td>
                                </tr>
                                <tr>
                                    <td colspan="2">
                                        <asp:GridView ID="SearchGrid" runat="server" AutoGenerateColumns="False" Height="274px" ItemStyle-Width="Auto" PageSize="25" ShowFooter="True" ShowHeaderWhenEmpty="True" Width="1121px">
                                            <Columns>
                                                <asp:TemplateField HeaderText="Admno">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="txtadmno" runat="server" Text='<%# Bind("ADMNO") %>'></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="lbladmno" runat="server" Text='<%# Bind("ADMNO") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Student Name">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="txtName0" runat="server"></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:TextBox ID="txtContactName" runat="server" Text='<%# Eval("Name") %>' Width="335px"></asp:TextBox>
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="lblContactName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Class">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="txtCity0" runat="server" Text='<%# Bind("Class") %>'></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:DropDownList ID="ClassDropListsF" runat="server">
                                                            <asp:ListItem>PRE</asp:ListItem>
                                                            <asp:ListItem>P1</asp:ListItem>
                                                            <asp:ListItem>P2</asp:ListItem>
                                                            <asp:ListItem>P3</asp:ListItem>
                                                            <asp:ListItem>P4</asp:ListItem>
                                                            <asp:ListItem>P5</asp:ListItem>
                                                            <asp:ListItem>P6</asp:ListItem>
                                                            <asp:ListItem>P7</asp:ListItem>
                                                        </asp:DropDownList>
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="lblCity" runat="server" Text='<%# Bind("Class") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Stream">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="txtCountry0" runat="server" Text='<%# Bind("Strean") %>'></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:DropDownList ID="StreamDropListsF" runat="server" DataSourceID="Sqlstream" DataTextField="Stream" DataValueField="Stream">
                                                        </asp:DropDownList>
                                                        <asp:SqlDataSource ID="Sqlstream" runat="server" ConnectionString="<%$ ConnectionStrings:SMIS2022ConnectionString %>" SelectCommand="SELECT [Stream] FROM [Streamdata]"></asp:SqlDataSource>
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="lblCountry" runat="server" Text='<%# Bind("Stream") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Sex">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="Sex" runat="server"></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:DropDownList ID="SexDropListsF" runat="server">
                                                            <asp:ListItem>NONE</asp:ListItem>
                                                            <asp:ListItem>MALE</asp:ListItem>
                                                            <asp:ListItem>FEMALE</asp:ListItem>
                                                        </asp:DropDownList>
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="Label1" runat="server" Text='<%# Eval("Sex") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Status">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="TextBox2" runat="server" Height="21px" Width="196px"></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="Label3" runat="server" Text='<%# Eval("Status") %>' Width="135px" ></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="Student Type">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:DropDownList ID="STDDropListsF" runat="server">
                                                            <asp:ListItem>NONE</asp:ListItem>
                                                            <asp:ListItem>DAY</asp:ListItem>
                                                            <asp:ListItem>BOARDER</asp:ListItem>
                                                        </asp:DropDownList>
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="Label2" runat="server" Text='<%# Eval("studenttype") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField HeaderText="House">
                                                    <EditItemTemplate>
                                                        <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("House") %>'></asp:TextBox>
                                                    </EditItemTemplate>
                                                    <FooterTemplate>
                                                        <asp:Button ID="Button1" runat="server" Text="Add New" OnClick="Button1_Click1" />
                                                    </FooterTemplate>
                                                    <ItemTemplate>
                                                        <asp:Label ID="Label4" runat="server" Text='<%# Eval("House") %>'></asp:Label>
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:ButtonField CommandName="Staff" HeaderText="Select" Text="Select" />
                                            </Columns>
                                        </asp:GridView>
                                    </td>
                                    <td> </td>
                                </tr>
                            </table>
                        </td>
                </tr>
            </table>
            <div class="Pager"></div>
            <div id="myModal" class="modal fade" style="width: auto;">
                <div class="modal-dialog">
                    <div class="modal-content">
                        <div class="modal-header">
                            <button style="padding: 0px" type="button" data-dismiss="modal">×</button>
                            <h4>Modify Students Details</h4>
                        </div>
                        <div class="modal-body">
                            <div>
                                <div class="form-group">
                                </div>
                                  <div class="form-group">
                                      <div class="form-group">
                                     <asp:HiddenField ID="hfId" runat="server" />
                                    <asp:Label ID="Label5" runat="server"></asp:Label>
                                </div>
                                          <tr>
                                              <td>
                                                  <table>
                                                      <tr>
                                                          <td class="auto-style3">
                                                              <table class="auto-style2">
                                                                  <tr>
                                                                      <td class="auto-style4">Admno</td>
                                                                      <td>
                                                                          <div class="auto-style6">
                                                                              <asp:Label ID="lblId" runat="server"></asp:Label>
                                                                              <asp:TextBox ID="admno" runat="server" Visible="False"></asp:TextBox>
                                                                          </div>
                                                                      </td>
                                                                        <td rowspan="7">
                                                                           Student Photo                    <asp:Panel ID="Panel2" runat="server" Height="162px">
                                                                              <asp:Image ID="Image1" runat="server" Height="158px" Width="176px" />
                                                                          </asp:Panel>
                                                                      </td>
                                                                  </tr>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Student Name</td>
                                                                      <td>
                                                                          <asp:TextBox ID="txtName" runat="server" Width="329px"></asp:TextBox>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Class</td>
                                                                      <td>
                                                                          <asp:DropDownList ID="ddlClass" runat="server" DataTextField="Class" DataValueField="Class">
                                                                              <asp:ListItem Text="Please select"></asp:ListItem>
                                                                              <asp:ListItem Text="PRE"></asp:ListItem>
                                                                              <asp:ListItem Text="P1"></asp:ListItem>
                                                                              <asp:ListItem Text="P2"></asp:ListItem>
                                                                              <asp:ListItem Text="P3"></asp:ListItem>
                                                                              <asp:ListItem Text="P4"></asp:ListItem>
                                                                              <asp:ListItem Text="P5"></asp:ListItem>
                                                                              <asp:ListItem Text="P6"></asp:ListItem>
                                                                              <asp:ListItem Text="P7"></asp:ListItem>
                                                                          </asp:DropDownList>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Stream</td>
                                                                      <td>
                                                                          <asp:TextBox ID="txtCountry" runat="server"></asp:TextBox>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Status</td>
                                                                      <td>
                                                                          <asp:TextBox ID="txtCity" runat="server"></asp:TextBox>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">House</td>
                                                                      <td>
                                                                          <asp:TextBox ID="txtHouse" runat="server"></asp:TextBox>
                                                                      </td>
                                                                        <td class="auto-style4">House</td>
                                                                      <td>
                                                                          <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Sex</td>
                                                                      <td>
                                                                          <asp:DropDownList ID="ddlsex" runat="server" DataTextField="SEX" DataValueField="SEX">
                                                                              <asp:ListItem Text="Please select"></asp:ListItem>
                                                                              <asp:ListItem Text="MALE"></asp:ListItem>
                                                                              <asp:ListItem Text="FEMALE"></asp:ListItem>
                                                                          </asp:DropDownList>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4">Student Type</td>
                                                                      <td>
                                                                          <asp:DropDownList ID="ddlStudentType" runat="server" DataTextField="studenttype" DataValueField="studenttype">
                                                                              <asp:ListItem Text="Please select"></asp:ListItem>
                                                                              <asp:ListItem Text="DAY"></asp:ListItem>
                                                                              <asp:ListItem Text="BOARDER"></asp:ListItem>
                                                                          </asp:DropDownList>
                                                                      </td>
                                                                  </tr>
                                                                  <tr>
                                                                      <td class="auto-style4"> </td>
                                                                      <td> </td>
                                                                  </tr>
                                                         </table>
                                                                  <tr>
                                                                      <td class="auto-style4"> </td>
                                                                      <td> </td>
                                                                  </tr>
                                                              </table>
                                                          </td>
                                                      </tr>
                                                  </table>
                                              </td>
                                          </tr>
                                      </div>
                                </div>
                        </div>
                        <div class="modal-footer">
                            <button type="button" class="btn btn-info" data-dismiss="modal">
                                Close</button>
                            <asp:Button ID="btnSubmit" runat="server" Text="Submit" CssClass="btn btn-success" OnClick="Submit" />
                        </div>
                    </div>
                </div>
            </div>            
        </asp:Panel>
    </form>
</body>
</html>