jQuery are not working in full page update panel in asp.net webforms

Jquery is not working while full-page Update Panels are used in ASP .Net webforms. The issue I am facing is that when I apply update panel on the full page then Jquery function is not working. (For example: when I click on bootstrap dropdown so dropdown are showing for 1 second and automatically  disappear)

The problem with is that I want Jquery to fully work (no need to reload it again) while any partial postback request from UpdatePanels in ASP .Net occurs.

<asp:Content ID="content4" runat="server" ContentPlaceHolderID="ContentPlaceHolder1"><asp:ScriptManager ID="ScriptManager2" runat="server"></asp:ScriptManager><script>
         //import dropdown-menu script$("document").ready(function () {$('.dropdown-menu').on('click', function (e) {
                 if ($(this).hasClass('dropdown-menu-form')) {
                     e.stopPropagation();
                 }
             });$('.dropdown-menu').on('click', function (e) {
                 if ($(this).hasClass('dropdown-menu-showhide')) {
                     e.stopPropagation();
                 }
             });
         });</script><style>
         /*import dropdown-menu css*/
.dropdown-menu-form {
   min-width:192px;
}     
.dropdown-menu-form > li > a{
    padding:8px 18px;
}
.dropdown-header-imp{
    font-weight: 600;
    background-color: #f1f3f6;
    padding-bottom: 6px;
    color: #6a6c6f;
    font-size: 14px;
    padding-top: 6px;
    padding-left: 17px;
}
.dropdown-menu-form li a:hover{
    background-color:#6a6c6f;
    color:#fff;
    transition: all 0.4s ease 0s;   
}
         /*Show Hide col dropdown-menu css*/
.dropdown-menu-showhide{
   min-width:250px;
   height:300px;
   overflow-y:scroll;
}     
.dropdown-menu-showhide > li {
    padding:6px 8px;
}
.dropdown-header-showhide{
    font-weight: 600;
    background-color: #f1f3f6;
    padding-bottom: 6px;
    color: #6a6c6f;
    font-size: 14px;
    text-align:center;
    padding-top: 6px;
    padding-left: 17px;
}

.dropdown-menu-showhide li:hover{
    background-color:#f1f3f6;
    color:#6a6c6f;
    transition: all 0.4s ease 0s;   
}
    </style>    <asp:PlaceHolder runat="server" ID="PlaceHolder2" /><asp:UpdatePanel ID="UpdatePanel2" runat="server" ChildrenAsTriggers="true"><ContentTemplate><div class="row"><div class="col-md-9"><div class="form-group pull-right"><div><asp:LinkButton ID="LinkButton1" CssClass="btn btn-primary" runat="server" ToolTip="Insert New Vendor" data-toggle="tooltip" data-placement="top" OnClick="InsertVendorImageButton_Click"><i class="fa fa-plus" aria-hidden="true"></i> Add</asp:LinkButton><asp:LinkButton ID="LinkButton2" CssClass="btn btn-info" runat="server" data-toggle="tooltip" data-placement="top" ToolTip="Update Selected Vendor(s) Record" OnClick="UpdateVendorImageButton_Click"><i class="fa fa-pencil-square-o" aria-hidden="true"></i> Edit</asp:LinkButton><asp:LinkButton ID="LinkButton3" CssClass="btn btn-danger" runat="server" data-toggle="tooltip" data-placement="top" ToolTip="Delete Selected Vendor(s) Record" OnClientClick="return DeleteRecord();" OnClick="DeleteVendorImageButton_Click"><i class="fa fa-trash" aria-hidden="true"></i> Delete</asp:LinkButton></div></div></div></div><asp:UpdatePanel ID="UpdatePanel3" runat="server" UpdateMode="Always"><Triggers><asp:AsyncPostBackTrigger ControlID="CheckBoxEmail" EventName="CheckedChanged" /></Triggers><ContentTemplate><asp:MultiView ID="MultiView1" runat="server" ActiveViewIndex="0"><asp:View ID="View1" runat="server"><div class="row"><div class="col-lg-12"><div class="hpanel hblue"><div class="panel-heading hbuilt"><div class="panel-tools"><div class="small text-bold left">
                                                    Show&nbsp;<asp:DropDownList ID="DropDownList2" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"><asp:ListItem Value="1">5</asp:ListItem><asp:ListItem Value="2" Selected="True">10</asp:ListItem><asp:ListItem Value="3">20</asp:ListItem><asp:ListItem Value="4">50</asp:ListItem><asp:ListItem Value="5">100</asp:ListItem><asp:ListItem Value="6">500</asp:ListItem></asp:DropDownList>&nbsp;entries</div><a class="dropdown-toggle" href="#" data-toggle="dropdown"><i class="fa  fa-cog"></i></a><ul class="dropdown-menu dropdown-menu-showhide pull-right" style="font-size: 14px;"><li class="dropdown-header-showhide">Show Hide Column</li><li><div class="checkbox checkbox-primary"><asp:CheckBox ID="CheckBox1" Checked="true" runat="server" Text="Email" AutoPostBack="true" /></div></li><li><div class="checkbox checkbox-primary"><asp:CheckBox ID="CheckBox3" Checked="true" runat="server" Text="Skype ID" /></div></li><li><div class="checkbox checkbox-primary"><asp:CheckBox ID="CheckBox4" Checked="false" runat="server" Text="Tax" /></div></li></ul></div><h3 class="panel-heading-primary-h3">Vendor(s)</h3></div><div class="panel-body"><div class="row"><div class="col-lg-4 pull-right"><div class="form-group"><input type="text" id="txt_search" class="form-control" placeholder="Search Vendor(s)..." data-toggle="tooltip" data-placement="top" title="Search Vendor(s)" /><%--<asp:TextBox ID="VendorTextBox" runat="server" CssClass="form-control" placeholder="Search Vendor(s)..." data-toggle="tooltip" data-placement="top" ToolTip="Search Vendor(s) "></asp:TextBox> --%></div></div></div><asp:HiddenField ID="HiddenField1" runat="server" /><div class="row"><div class="col-lg-12"><div class="table-responsive"><asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AllowPaging="true" PageSize="10" PagerSettings-Position="Bottom" OnPageIndexChanging="VendorGridView_PageIndexChanging"
                                                            EnableModelValidation="True" OnRowCommand="CustomerGridView_RowCommand" CssClass="webposgridview-primary" AlternatingRowStyle-CssClass="alt" PagerStyle-CssClass="pgr" AllowSorting="true" OnSorting="VendorGridView_Sorting" ShowFooter="true" OnRowCreated="VendorGridView_RowCreated"><Columns><asp:TemplateField HeaderText="Select" HeaderStyle-Width="10px" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Bottom" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Bottom"><HeaderTemplate><div class="checkbox checkbox-primary" data-toggle="tooltip" data-placement="top" title="Select All Records"><input id="Checkbox2" type="checkbox" onclick="CheckAll(this)" runat="server" aria-label="Single checkbox One" /><label></label></div></HeaderTemplate><ItemTemplate><div class="checkbox checkbox-primary"><asp:CheckBox ID="SelectCheckBox_item" runat="server" /><label></label></div></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Vendor ID" Visible="false"><ItemTemplate><asp:Label ID="VendorLabel_item" runat="server" Text='<%# Eval("VendorID") %>'></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Vendor(s) Name<span class='fa fa-sort-alpha-asc gridview-desc-ion'></span>" SortExpression="VendorName"><ItemTemplate><asp:Label ID="VendorNameLabel" runat="server" Text='<%# Eval("VendorName") %>'></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="E-Mail"><ItemTemplate><asp:Label ID="ZIPLabel" runat="server" Text='<%# Eval("Email") %>'></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="View Detail" HeaderStyle-Width="110px"><ItemTemplate><%--<asp:ImageButton ID="detailImageButton_item" runat="server" 
                        CommandName="Detail" CommandArgument='<%#Eval("CustomerID") %>' 
                        Height="18px" ImageUrl="~/Images/customerdetail1.png" Width="70px" />--%><asp:LinkButton ID="detailImageButton_item" runat="server" CommandName="Detail" CssClass="btn btn-default btn-sm" CommandArgument='<%#Eval("VendorID") %>' data-toggle="tooltip" data-placement="left" ToolTip="View Detail"><i class="ion-eye"></i> View</asp:LinkButton></ItemTemplate><ItemStyle HorizontalAlign="Center" VerticalAlign="Top" /></asp:TemplateField></Columns><PagerSettings Mode="NumericFirstLast" PageButtonCount="20" /></asp:GridView></div></div></div></div></div></div></div></asp:View><asp:View ID="View2" runat="server"><div class="row"><div class="col-lg-12"><div class="hpanel hblue"><div class="panel-heading hbuilt text-center"><label id="Label3" runat="server" class="panel-inner-heading-primary-h3"></label></div><div class="panel-body"><div class="row"><div class="col-lg-4"><div class="form-group"><asp:HiddenField ID="HiddenField2" runat="server" /><label>Company Name:</label><asp:TextBox ID="TextBox3" CssClass="form-control" runat="server"></asp:TextBox></div></div><div class="col-lg-4"><div class="form-group"><label>Email Address:</label><asp:TextBox ID="TextBox4" runat="server" CssClass="form-control" /></div></div><div class="col-lg-4"><div class="form-group"><label>Tax Number:</label><asp:TextBox ID="TextBox5" runat="server" CssClass="form-control" /></div></div></div><script>
                                                Sys.Application.add_load(initdropdownInsertCategoryDDL);</script><div class="row"><div class="col-lg-4"><div class="form-group"><label>Classes</label><asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="InsertCategoryDDL" Display="Dynamic" ErrorMessage="Please Select Category and then Press Save" InitialValue="0" Text="<i class='ion-ios-medical'> </i>" ToolTip="Please Select Category and then Press Save" ValidationGroup="InsertCategoryGrp" /><asp:Panel ID="Panel1" runat="server"><asp:DropDownList ID="DropDownList4" runat="server" AutoPostBack="True" OnSelectedIndexChanged="InsertCategoryDDL_SelectedIndexChanged" CssClass="form-control js-source-states"></asp:DropDownList></asp:Panel></div></div><div class="col-lg-8"><div class="form-group"><label>Details:</label><asp:TextBox ID="TextBox9" runat="server" CssClass="form-control" Style="resize: none" /></div></div></div><div class="row"><div class="col-lg-12"><div class="form-group"><asp:PlaceHolder ID="PlaceHolder3" runat="server"></asp:PlaceHolder><asp:LinkButton ID="LinkButton8" runat="server" OnClick="ClearClassLinkButton_Click">Clear Classes</asp:LinkButton></div></div></div><div class="row"><div class="col-lg-12 col-md-6"><div class="page-header"><h4 style="text-align: center;">Contact Information</h4></div></div></div></div><div class="panel-footer" id="test1"><asp:LinkButton ID="LinkButton9" CssClass="btn btn-primary" runat="server" CausesValidation="false" ValidationGroup="InsertGrp" OnClientClick="return SaveOrUpdate();" OnClick="InsertLinkButton_Click"> Save</asp:LinkButton><asp:LinkButton ID="LinkButton10" CssClass="btn btn-danger" runat="server" ValidationGroup="ClearGrp" OnClick="ClearLinkButton_Click"> Clear</asp:LinkButton></div></div></div></div></asp:View></asp:MultiView></ContentTemplate></asp:UpdatePanel></ContentTemplate><Triggers><asp:PostBackTrigger ControlID="btnExportSelected" /><asp:PostBackTrigger ControlID="btnExportAll" /><asp:AsyncPostBackTrigger ControlID="ConvertionExportDDL" /><asp:AsyncPostBackTrigger ControlID="IDButtonSettings" /><asp:AsyncPostBackTrigger ControlID="IDCheckBoxListMain" /><asp:PostBackTrigger ControlID="CheckBoxTax" /><asp:PostBackTrigger ControlID="CheckBoxBankName" /><asp:PostBackTrigger ControlID="CheckBoxBankAccountNo" /><asp:PostBackTrigger ControlID="CheckBoxClasses" /><asp:PostBackTrigger ControlID="CheckBoxAddress" /><asp:PostBackTrigger ControlID="CheckBoxVendorName" /><asp:PostBackTrigger ControlID="CheckBoxDetails" /></Triggers></asp:UpdatePanel></asp:Content>