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DropDownList losing style in UpdatePanel after PostBack in Asp.Net c#

I am using select2 plugin for dropdownlist in asp.net c# which has autopostback true, but when placed in updatepanel its working fine on first page load but when postback happens its styling is gone and dropdownlist is showed in default asp.net format.
<div class="col-md-4 col-12">
<asp:UpdatePanel ID="type" runat="server">
<ContentTemplate>
<div class="form-group">
<div class="controls">
<label for="bktype">Type</label>
<asp:DropDownList ID="bktype" runat="server" CssClass="form-control select2 round" Style="width: 100%" required="" data-validation-required-message="Select a Type" data-placeholder="Select a Type" AppendDataBoundItems="true" AutoPostBack="true" DataSourceID="bk_type" DataTextField="typename" DataValueField="typeId" OnSelectedIndexChanged="bktype_SelectedIndexChanged">
<asp:ListItem Value="">Select a Type</asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="bk_type" runat="server" ConnectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\EReader.mdf;Integrated Security=True" ProviderName="System.Data.SqlClient" SelectCommand="SELECT * FROM [BTypes] ORDER BY [typename]"></asp:SqlDataSource>
</div>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
<div class="col-md-4 col-12">
<asp:UpdatePanel ID="genre" runat="server">
<ContentTemplate>
<div class="form-group">
<div class="controls">
<label for="bkgenres">Genres</label>
<asp:DropDownList ID="bkgenres" runat="server" ClientIDMode="Static" CssClass="form-control select2 round" multiple="multiple" Style="width: 100%" required="" data-validation-required-message="Select Genres" data-placeholder="Select Genres" AppendDataBoundItems="true">
<asp:ListItem Value="">Select Genres</asp:ListItem>
</asp:DropDownList>
</div>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
Before PostBack
After Postback
After PostBack happens select2 all styleing is gone search box of select2 is also gone. Please help me out.

UpdateProgress fire after first panel update

I have an UpdateProgress associated with an UpdatePanel. The problem is it's not firing until the second update.
Ì have a general UpdatePanel with ID="uppGeneric" and a child one with ID="uppAgrupar" which has a LinkButton inside. When I click on LinkButton it doesn't fire the UpdateProgress bar.
<asp:UpdatePanel ID="uppGeneric" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<div class="row">
<div class="col-md-12 mx-auto">
<br />
<asp:UpdateProgress ID="upCargando" DynamicLayout="true" runat="server" AssociatedUpdatePanelID="uppAgrupar">
<ProgressTemplate>
<div class="progress">
<div class="indeterminate" style="width: 100%"></div>
</div>
</ProgressTemplate>
</asp:UpdateProgress>
</div>
</div>
<div class="row">
<div class="col-md-6 mx-auto">
<asp:UpdatePanel ID="uppAgrupar" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:LinkButton ID="btnAgrupar" runat="server" CssClass="el_s btn btn-info btn-block" OnClick="btnAgrupar_Click"><i class="fa fa-search"></i> (S) BUSCAR</asp:LinkButton>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnAgrupar" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</div>
</div>
And in code behind I execute (to be sure):
uppAgrupar.Update();
but nothing happens.

I found a partial solution.
The UpdateProgress
<asp:UpdateProgress ID="upCargando" runat="server" AssociatedUpdatePanelID="uppAgrupar">
<ProgressTemplate>
<div class="progress">
<div class="indeterminate" style="width: 100%"></div>
</div>
</ProgressTemplate>
</asp:UpdateProgress>
generates the next HTML and CSS:
Which has "display: none;"
The problem is that display attribute was not set up to "display: block;" on first button click.
So, my solution was creating a javascript function that change the display attribute that is fired on the event "onClientClick".
<asp:LinkButton ID="btnAgrupar" runat="server" CssClass="el_s btn btn-info btn-block" OnClientClick="activar_barra()" OnClick="btnAgrupar_Click"><i class="fa fa-search"></i> (S) BUSCAR</asp:LinkButton>
and the javascript function is (it could access by ClientID but it's the same result)
function activar_barra()
{
document.getElementsByClassName('progress')[0].parentNode.style.display = "block";
}

asp dropdownlist inside bootstrap modal doesn't change value

I'm developing a web application using asp.net and bootstrap v3. On my page, there is a modal which contains two twxt boxes and an asp dropdownlist.
My problem is that the dropdownlist SelectedIndexChanged is not firing. When I put a dropdownlist outside the Modal, its SelectedIndexChanged fires without any problem.
I have set the EnableViewState="true" for the Page and the DDL. I have also set AutoPostBack = "True".
Note:
The page postback when i change the selected item in the DDL inside the modal but it don't go to the SelectedIndexChanged event as i have put a break point and it doesn't work.
I have notices also that the HTML of the DDL (Option, Select) is also that the (Selected="Selected") property is always set for the first element.
this is how I loadt the DDL
protected void Page_Load(object sender, EventArgs e)
{
if(!isPostBack)
{
DataSet ds2 = MainModule.GetTableSQLBySP(new Dictionary<string, string>(), "SP_Stand_GetSectorTypes");
ddlMdlAreaInvitedSecType.DataSource = ds2.Tables[0];
ddlMdlAreaInvitedSecType.DataValueField = "Set_ID";
ddlMdlAreaInvitedSecType.DataTextField = "Set_LongName";
ddlMdlAreaInvitedSecType.DataBind(); }
}
and this is the Modal code
<div class="modal fade" id="modalAreaInvitedSearch" style="margin-top: 155px" role="dialog" aria-labelledby="basicModal" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel2">Please enter product data </h4>
</div>
<div class="modal-body" style="height:auto">
<input type="text" class="form-control" placeholder="MM" style="display: none" runat="server" id="Text1" />
<div class="form-group">
<label for="inputEmail1" class="col-lg-3 control-label">Short Name</label>
<div class="col-lg-8">
<asp:TextBox enableviewstate="true" class="form-control " runat="server" id="txtMdlAreaInvitedShortName" />
</div>
</div>
<div class="form-group">
<label for="inputEmail1" class="col-lg-3 control-label">Long Name</label>
<div class="col-lg-8">
<asp:TextBox enableviewstate="true" class="form-control " runat="server" id="txtMdlAreaInvitedLongName" />
</div>
</div>
<div class="form-group">
<label for="inputEmail1" class="col-lg-3 control-label">Sector Type</label>
<div class="col-lg-8">
<asp:DropDownList EnableViewState="true" class="form-control" OnSelectedIndexChanged="ddlMdlAreaInvitedSecType_SelectedIndexChanged" AutoPostBack="true" runat="server" ID="ddlMdlAreaInvitedSecType" />
</div>
</div>
<asp:UpdatePanel runat="server" ID="updatePanel2" UpdateMode="Conditional">
<ContentTemplate>
<asp:GridView ID="grdMdlAreaInvitedResult" runat="server" HorizontalAlign="Center"
AutoGenerateColumns="false" AllowPaging="true"
DataKeyNames="Sec_Id" CssClass="table table-hover table-striped table-bordered centerGridHead">
<Columns>
<asp:TemplateField HeaderText="" ShowHeader="false" ItemStyle-Width="17%">
<ItemTemplate>
<%--<asp:LinkButton id="btnRemove" runat="server" CausesValidation="false" Text="<i aria-hidden='true' class='icon-plus'></i>" CssClass="btn btn-info btn-xs "/>--%>
<asp:CheckBox ID="chkGrdMdlAreaInvitedResult" runat="server" CssClass="btn btn-primary btn-xs " />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Sec_Id" HeaderText="Sec_Id" Visible="false" />
<asp:BoundField DataField="Sec_ShortName" HeaderText="Sector" />
<asp:BoundField DataField="Sec_LongName" HeaderText="Sector Long Name" />
<asp:BoundField DataField="Sec_Id_Master" HeaderText="Sec_Id_Master" Visible ="false" />
</Columns>
</asp:GridView>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnMdlAreaInvitedSearch" EventName="Click" />
<%-- <asp:AsyncPostBackTrigger ControlID="ddlMdlAreaInvitedSecType" EventName="SelectedIndexChanged" />--%>
</Triggers>
</asp:UpdatePanel>
</div>
<div class="modal-footer">
<div class="form-group">
<div class="col-lg-12">
<asp:Button ID="btnMdlAreaInvitedClear" OnClientClick="clickCodeBtn()" runat="server" class="btn btn-primary col-lg-2" Text="Clear"></asp:Button>
<asp:Button ID="btnMdlAreaInvitedGet" OnClientClick="clickCodeBtn()" runat="server" OnClick="btnMdlAreaInvitedGet_Click" class="btn btn-primary col-lg-2" Text="Get"></asp:Button>
<asp:Button ID="btnMdlAreaInvitedSearch" UseSubmitBehavior="false" runat="server" OnClick="btnMdlAreaInvitedSearch_Click" class="btn btn-primary col-lg-2" Text="Search"></asp:Button>
<asp:Button ID="btnMdlAreaInvitedClose" OnClientClick="clickCodeBtn()" runat="server" class="btn btn-primary col-lg-2" Text="Close"></asp:Button>
</div>
</div>
</div>
and this is how i open the Modal
function popAreaInvitedSearch() {
$('#modalAreaInvitedSearch').appendTo('body').modal({
show: true,
keyboard: false,
backdrop: 'static'
});
}
any help will be appreciated.

I had a similar problem to this with Fancybox, and it turned out that when the Modal loads, it extracts the HTML and injects it into a DIV outside of the main ASP.NET Form.
To correct this in Fancybox, I overrode the Fancybox source code to inject the Modal within the form.
I'd start by inspecting the page with Firebug, and identify where the Bootrap Modal is actually located. If it is outside of the form, you will need to figure out how to get it rendered within for the ASP.NET control events to properly fire, which you perhaps can configure with the Modal javascript configuration options.
Hope that sets you on the right path.

Have you tried putting the DDL in the UpdatePanel as well? The DDL will most likely always result in a Postback now. Which is probably not desirable.

Button event doesn't fire inside Update panel for FileUpload

I have a asp.net web form Page which uses master page also.
This is a simple page which displays some text and has a form, this page also allows user to upload resume in .doc, .docx & pdf format.
Problem with this code is that i am not able to trigger
for some reason <asp:Button ID="btnUploadCV" runat="server" Text="Upload" CssClass="btnUpload" onclick="btnUploadCV_Click"/>
<%# Page Title="" Language="C#" MasterPageFile="~/en/SiteMasterPage.master" AutoEventWireup="true" CodeFile="career.aspx.cs" Inherits="career" %>
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"></asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<!-- Content Page-->
<!-- page content wrapper -->
<div id="page-content-area" class="page-content-area">
<div id="pg-left-bar" class="pg-left-bar">
<div class="page-title">
<h5><asp:Label ID="lblPageTitle" CssClass="page-title-lbl" runat="server" Text="Introduction"></asp:Label></h5>
</div>
<div class="page-text">
<asp:Label ID="lblPageContents" runat="server" Text=""></asp:Label>
</div>
<div class="career-form-wrapper">
<!-- UpdatePanel -->
<asp:UpdatePanel ID="updPnlArticles" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Panel ID="pnlCareerForm" runat="server">
<div class="row-form">
<div class="row-lbl-wrapper"> <span class="row-req">*</span>
<asp:Label ID="lblFirstName" runat="server" CssClass="row-label" Text="First Name:"></asp:Label>
</div>
<asp:TextBox ID="txtFirstName" runat="server" CssClass="row-input"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfFN" runat="server" ValidationGroup="Careers" ErrorMessage="*" CssClass="row-validate" ControlToValidate="txtFirstName"></asp:RequiredFieldValidator>
</div>
<div class="row-form">
<div class="row-lbl-wrapper"> <span class="row-req">*</span>
<asp:Label ID="lblFamilyName" runat="server" CssClass="row-label" Text="Family Name:"></asp:Label>
</div>
<asp:TextBox ID="txtFamilyName" runat="server" CssClass="row-input"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfLN" runat="server" ValidationGroup="Careers" ErrorMessage="*" CssClass="row-validate" ControlToValidate="txtFamilyName"></asp:RequiredFieldValidator>
</div>
<div class="row-form">
<div class="row-lbl-wrapper"> <span class="row-req">*</span>
<asp:Label ID="lblEmail" runat="server" CssClass="row-label" Text="Email:"></asp:Label>
</div>
<asp:TextBox ID="txtEmail" runat="server" CssClass="row-input"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvEmail" runat="server" ValidationGroup="Careers" ErrorMessage="*" CssClass="row-validate" ControlToValidate="txtEmail"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="revEmail" runat="server" ErrorMessage="*" CssClass="row-validate" ControlToValidate="txtEmail" ValidationExpression="\w+([-+.']\w+)*#\w+([-.]\w+)*\.\w+([-.]\w+)*" ValidationGroup="Careers"></asp:RegularExpressionValidator>
</div>
<div class="row-form">
<div class="row-lbl-wrapper">
<asp:Label ID="lblPhone" runat="server" CssClass="row-label" Text="Phone Number:"></asp:Label>
</div>
<asp:TextBox ID="txtPhone" runat="server" CssClass="row-phone" Text=""></asp:TextBox>
<asp:RegularExpressionValidator ID="revPhone" runat="server" ErrorMessage="*" ValidationGroup="Careers" ControlToValidate="txtPhone" ValidationExpression="^([\+]?[0-9]{1,3}[\s.-][0-9]{1,12})([\s.-]?[0-9]{1,4}?)$"></asp:RegularExpressionValidator>
<div class="tooltip tooltip-override" title="Accepts local format (eg. 04 1234567, 050 1234567 or 04-1234567, 050-1234657)<br />and international format (eg. +971 41234567, +971-41234567 ).<br />Also accepts an optional extention of up to four digits (eg. 04 1234567 289 or +974 41234567 289)">
<asp:Image ID="imgtooltip" CssClass="tooltip-img" runat="server" ImageUrl="~/images/tooltipgreen.png" />
</div>
</div>
<div class="row-form">
<div class="row-lbl-wrapper">
<asp:Label ID="lblFax" runat="server" CssClass="row-label" Text="Fax Number:"></asp:Label>
</div>
<asp:TextBox ID="txtFax" runat="server" CssClass="row-input"></asp:TextBox>
<asp:RegularExpressionValidator ID="revFax" runat="server" ErrorMessage="*" ValidationGroup="Careers" ControlToValidate="txtFax" ValidationExpression="^([\+]?[0-9]{1,3}[\s.-][0-9]{1,12})$"></asp:RegularExpressionValidator>
<div class="tooltip tooltip-override" title="Accepts local format (eg. 04 1234567 or 040-1234567)<br />and international format (eg. +974 41234567 or +974-41234567)">
<asp:Image ID="Image1" CssClass="tooltip-img" runat="server" ImageUrl="~/images/tooltipgreen.png" />
</div>
</div>
<div class="row-form">
<div class="row-lbl-wrapper">
<asp:Label ID="lblAddress" runat="server" CssClass="row-label" Text="Address:"></asp:Label>
</div>
<asp:TextBox ID="txtAddress" runat="server" CssClass="row-input-multiline" TextMode="MultiLine"></asp:TextBox>
</div>
<div class="row-form">
<div class="row-lbl-wrapper"> <span class="row-req">*</span>
<asp:Label ID="lblCountry" runat="server" CssClass="row-label" Text="Country:"></asp:Label>
</div>
<asp:DropDownList ID="ddCountry" runat="server" CssClass="row-dd"></asp:DropDownList>
<asp:CascadingDropDown ID="csdCountry" runat="server" Category="Country" TargetControlID="ddCountry" PromptText="-- Select --" LoadingText="[Loading Countries...]" ServiceMethod="FetchCountries" ServicePath="~/wsCountryCity.asmx" PromptValue="0"></asp:CascadingDropDown>
<asp:RequiredFieldValidator ID="rfCountry" ValidationGroup="Careers" ControlToValidate="ddCountry" CssClass="row-validate" InitialValue="0" runat="server" ErrorMessage="*"></asp:RequiredFieldValidator>
</div>
<div class="row-form">
<div class="row-lbl-wrapper">
<asp:Label ID="lblCity" runat="server" CssClass="row-label" Text="City:"></asp:Label>
</div>
<asp:DropDownList ID="ddCity" runat="server" CssClass="row-dd"></asp:DropDownList>
<asp:CascadingDropDown ID="csdCity" runat="server" Category="City" TargetControlID="ddCity" ParentControlID="ddCountry" PromptText="-- Select --" LoadingText="[Loading Cities...]" ServiceMethod="FetchCities" ServicePath="~/wsCountryCity.asmx" PromptValue="0"></asp:CascadingDropDown>
</div>
<div class="row-form">
<div class="row-lbl-wrapper"> <span class="row-req">*</span>
<asp:Label ID="Label1" runat="server" CssClass="row-label" Text="CV:"></asp:Label>
</div>
<asp:FileUpload ID="FileUpload1" runat="server" CssClass="fileUpload" />
<div id="dFileUpload1" class="btnUploadHack">Browse</div>
<asp:Button ID="btnUploadCV" runat="server" Text="Upload" CssClass="btnUpload" onclick="btnUploadCV_Click" />
<asp:RequiredFieldValidator ID="rfvF1" runat="server" ValidationGroup="Careers" ErrorMessage="*" CssClass="row-validate" ControlToValidate="FileUpload1"></asp:RequiredFieldValidator>
<asp:Label ID="lblImageMSG" runat="server" Text=""></asp:Label>
</div>
<div class="contactus-row">
<asp:Button ID="btnSave" runat="server" CssClass="btnContactUsSave" Text="Send Message" onclick="btnSave_Click" ValidationGroup="Careers" />
</div>
</asp:Panel>
<asp:Panel ID="pnlCareerMSG" runat="server"></asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
<!-- UpdatePanel -->
</div>
</div>
<div class="pg-right-bar">
<asp:Image ID="imgSideBanner" runat="server" />
</div>
</div>
<!-- page content wrapper -->
<!-- Content Page-->
</asp:Content>
Code Behind
protected void btnUploadCV_Click(object sender, EventArgs e)
{
// code is here
}
So far i am not able to figure out what i s blocking the any button inside from firing. Yes i did even put a simple button to test even that didn't fire.
I am not sure if it is Validation or Update Panel which is creating problem.
I tried using Trigger that didnt work
I tried setting
<asp:Button ID="btnUploadCV" runat="server" Text="Upload" CssClass="btnUpload" onclick="btnUploadCV_Click" CausesValidation="false" />
protected void btnUploadCV_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid == true)
{
// your code here
}
}
My problem is it deosn't even enter code block of button for some reason.
Just to add further i am using cascading dropdown for country and cities i am not sure if that is causing any problem I am also using two panels one has the form control and after successful submission i hide this panel & show the other panel with success message all this code with UpdatePanel.
Only way out of this i see is to upload all files main form button Send Message rather than having individual button for all file upload control
UPDATE: I also tried this approach even this doesn't work

Please understand the concept
Update Panel is used for partial post back which is today we call AJAX
However AJAX cannot be used to upload file to the server
AJAX uses xmlHttpRequest which do not support file upload.
So, don't think that its a bug from Microsoft. Even today also, we don't have any javascript library which will support FileUpload using AJAX. All AJAX fileuploaders that you find on internet are using Flash :)
This is the limitation of protocol. Use any other jquery plugin to upload file. Update panel will not work for this.

FileUpload control doesn't work with asynchronous postbacks.To make this work in your application, follow below steps
1.) Place a <asp:ScriptManager /> on the page.
if you are using master page in your application and your web page uses the master page, place script manager in master page. If you don't want master page to have script manager,you can also place script manager on specific web pages anyways.
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
2.) After this, Add <Triggers> for the button btnUploadCV in your Update panel.
<Triggers>
<asp:PostBackTrigger ControlID="btnUploadCV" />
</Triggers>
And rest of your upload button OnClick handler looks like:
protected void btnUploadCV_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
fileName = FileUpload1.FileName;
FileUpload1.SaveAs("~/UploadedData/" + fileName);
...
}
}

Is the Login control buggy?

From the documentation here http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.login.layouttemplate.aspx i had customized the user interface of login control through layout template like below
<LayoutTemplate>
<h3 class="login-title page-header">
<asp:Literal runat="server" ID="loginHeading" Text="Sign-in"></asp:Literal>
</h3>
<div class="clearfix">
<asp:Label runat="server" ID="lblUserName" Text="Username" AssociatedControlID="UserName"></asp:Label>
<div class="input">
<asp:TextBox runat="server" ID="UserName"></asp:TextBox>
<asp:RequiredFieldValidator runat="server" ID="rfvTxtUserName" ErrorMessage="Username is required"
ControlToValidate="UserName" Text="Username is required"></asp:RequiredFieldValidator>
</div>
</div>
<div class="clearfix">
<asp:Label runat="server" Text="Password" AssociatedControlID="Password"></asp:Label>
<div class="input">
<asp:TextBox runat="server" ID="Password" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator runat="server" ID="rfvTxtPassword" ErrorMessage="Password is required"
ControlToValidate="Password" Text="Password is required"></asp:RequiredFieldValidator>
</div>
</div>
<div class="clearfix">
<asp:Label runat="server" Text="Remember Me" AssociatedControlID="RememberMe"></asp:Label>
<div class="input">
<input type="checkbox" runat="server" id="RememberMe" />
</div>
</div>
<div class="actions action-fix">
<asp:Button runat="server" ID="Login" Text="Login" CssClass="btn success small" />
<input type="reset" class="btn small" value="reset" />
</div>
</LayoutTemplate>
as you can see i did name the control ID as required by the control. Also i use CSS Friendly control adapter for rendering the Login control.
The Problem
It just happens after user types username and password and submits the details nothing happens the page just reloads causing a postback.
What am i doing wrong here
info:
more problem seems to be more prominent for users using LoginControlAdapter look here http://forums.asp.net/t/1043974.aspx/2/10

you must be missing CommandName paramter
<asp:button id="Login" CommandName="Login" runat="server" Text="Login"></asp:button>

Try adding command name to your login button;
<asp:Button runat="server" ID="Login" Text="Login" CssClass="btn success small" CommandName="Login" />