Develop Reference

Simple Razor C# .Net form: Checkboxes and Session Variable settings

First, I want to explain I do not know any Razor or C#. I have a client that I build out high-fidelity prototyping for. Some of the elements are getting kind of advanced where JavaScript is not working for me anymore.
The Ask:
I have a modal that I trigger (using bootstrap), this modal has some checkboxes in a form. Each checkbox will trigger to turn on or turn off a session that will turn certain elements on or off on a series of 5-6 pages. Here I am just working with one of those sessions. I can duplicate once I figure this out. Any help will be greatly appreciated.
Code:
#{
if (Request.Form["fitscorechecked"] != null && Request.Form["fitscorechecked"] == "on") {
Session["fitscore"] = "on";
} else {
Session["fitscore"] = "off";
}
}
My Form:
<form method="post">
<div class="row">
<div class="col-sm-12 bottom5"><input type="checkbox" id="fitscorechecked" name="fitscorechecked" value="true"/> Show fit score during adjustment</div>
<div class="col-sm-12 bottom5"><input type="checkbox" id="Anonymous" name="Anonymous" value="true" /> Make contributors anonymous</div>
<div class="col-sm-12 bottom5" data-toggle="tooltip" data-html="true" title="<h5>Advanced Options</h5><h6>Will allow you to view related tasks, manually adjust patterns (power users only), and the ability to download responses.</h6>">
<input type="checkbox" id="Advanced" name="Advanced" value="true" /> Show advanced options</div>
</div>
<div class="prototype-btngroup-center">
<a class="btn btn-default prototype-btn-spacersm" data-dismiss="modal">Cancel</a>
<a class="btn btn-primary" type="submit" value="submit" href="#stepAlign6" data-toggle="tab" data-step="5" data-dismiss="modal">Begin Alignment</a>
</div>
</form>
<form>
I have never built a form in .net so I am really lost. I just need something very simple that does not use controllers. Much of this code is show and then redone based on the updates from the product team, so something that is simple and easy to adjust.

How to add icon to semantic ui dropdown?

On https://jsfiddle.net/u40uz1c4/4/, how can I add those icons to the dropdown?
I have ASP.NET dropdowns each with a list of items that I want to skin with the semantic dropdown. I want however svg images as icons for each item.
Reference: http://semantic-ui.com/modules/dropdown.html#/usage
<select name="gender" class="ui dropdown" id="select">
<option value="">Gender</option>
<option value="male">Male</option>
<option value="female">Female</option>
</select>
<br />
<br />
<img src='http://icons.iconarchive.com/icons/icons8/ios7/512/Users-User-Male-icon.png' style='width:20px;'>
<img src='http://icons.iconarchive.com/icons/icons8/ios7/512/Users-User-Female-icon.png' style='width:20px;'>

You cant do that by ASP.NET controller. You have to ctrate simple html markup, and than use the script for convert it to drop down list

I ended up embarking on an exercise to programatically create HTML server-side based on inspecting existing asp:DropDownList controls, similar to the output shown at https://jsfiddle.net/hodtfkys/3/.
<div class='ui icon selection dropdown'>
<input name='DropDownListCategoryClone' type='hidden'> <i class='dropdown icon'></i>
<div class='default text'>
Male
</div>
<div class='menu'>
<div class='item' data-text='Male' data-value='male'>
<img class='ui image' src='http://icons.iconarchive.com/icons/icons8/ios7/512/Users-User-Male-icon.png' style='width:20px;'> Male
</div>
<div class='item' data-text='Female' data-value='female'>
<img class='ui image' src='http://icons.iconarchive.com/icons/icons8/ios7/512/Users-User-Female-icon.png' style='width:20px;'> Female
</div>
</div>
</div>

Form post to another page

I am fairly new to C# and asp.net and am having trouble showing something submitted in a form. The form element is a tag. The drop-down info is pulled from a data base and displays correctly. It's just getting it to post to another page after the form is submitted is where I am having the problem. Any help would be appreciated.
Contact.aspx:
<form action="Default.aspx" method="post" data-transition="pop">
<div data-role="fieldcontain">
<label for="topEmails">Business Entity ID:</label>
<select name="topEmails" id="topEmails" data-native-menu="false"
runat="server">
</select>
</div>
<input type="submit" data-iconpos="right" data-inline="true"
data-icon="plus" name="sendMessage" id="sendMessage" value="Send Info">
</form>
Contact.aspx.cs:
AdventureWorks2012DataContext db = new AdventureWorks2012DataContext();
var emails = (from b in db.EmailAddresses
select new { b.EmailAddressID, b.BusinessEntityID }).Take(20);
topEmails.DataTextField = "BusinessEntityID";
topEmails.DataValueField = "BusinessEntityID";
topEmails.DataSource = emails;
topEmails.DataBind();
Default.aspx.cs:
FormSuccessBID.InnerHtml = "Business Entity ID: " + Request.Form["topEmails"] + "";
Any ideas why this wouldn't be working?
Update:
Contact.aspx:
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">
<h2 style="text-align: center;">Contact Kyle</h2>
<form action="Default.aspx" method="post" data-transition="pop">
<div data-role="fieldcontain">
<label for="userFName">First Name:</label>
<input type="text" name="firstName" id="uFName">
</div>
<div data-role="fieldcontain">
<label for="userLName">Last Name :</label>
<input type="text" name="lastName" id="uLName">
</div>
<div data-role="fieldcontain">
<label for="productsCategories">Products:</label>
<select name="productCategories" id="productCategories" data-native-menu="false" runat="server"></select>
</div>
<div data-role="fieldcontain">
<label for="topEmails">Business Entity ID:</label>
<select name="topEmails" id="topEmails" data-native-menu="false" runat="server"></select>
</div>
<input type="submit" data-iconpos="right" data-inline="true" data-icon="plus" name="sendMessage" id="sendMessage" value="Send Info">
</form>
</asp:Content>

You're missing "runat='server'" in your form definition.
In ASP.NET you're also allowed one form per page. Not sure from what you're posted if you're trying to put multiple forms on there, but if you are, it's not going to work.
I think all you need to do to accomplish what you want is have an ASP.NET button on the page, with the postbackURL set to the page you want to go to. (Of course, you need to do this in a server-side form)
I think you're mixing ASP.NET methods with other, different technologies. (From the look of it, you probably used classic ASP or PHP perhaps?)
If you can't use .NET for whatever reason, the ID/name of the field is not going to be what you're expecting. You need to inspect the form post and find its value - something along the lines of "clt00_somethingelse_topEmails". (Again, this is going to be a heck of a lot easier if you use the .NET way of doing things, but you may have a requirement not to)

Linq to xml - access deep element

In C# i need to access element that is nested in many other elements. I could write a query by naming all of elements but that would be very time consuming. Is there any easy way to do this or maybe some generator?
for example i have a xml:
<div id="list_offers">
<div class="container">
<div id="header">
<div class="row">
<div class="space-on-sides">
<div class="sixteen columns relative">
<div class="logo">
<a href="/">
<img src="/images/design_resp/design/logo_profesia.png" width="113" height="76" alt="PROFESIA.SK - práca, zamestnanie, ponuky práce, brigáda, voľné pracovné miesto" title="PROFESIA.SK - práca, zamestnanie, ponuky práce, brigáda, voľné pracovné miesto" />
</a>
</div>
<div class="right-panel">
<a class="login-company small red button nice radius right hide-on-phones margin-on-left" title="Vstup pre firmy" href="/login_person.php?action=company_login">Vstup pre firmy</a>
<a class="login-company small red button nice radius right show-on-phones margin-on-left" href="/login_person.php?action=company_login">Firmy</a>
<a rel="nofollow" id="login_modal" class="small gray button nice radius right" title="Prihláste sa do konta" href="/login_person.php?action=login">Prihlásiť</a>
<div class="search">
<div class="relative hide-on-phones">
<form name="fulltextsearch" id="fulltextsearch" action="/search.php" method="get" onsubmit="if(document.getElementById('search').value=='HÄľadanie') return false; return true;" class="nice" />
<input name="which_form" type="hidden" value="simple" />
<input name="tab_name" type="hidden" />
<input name="search_anywhere" type="text" id="search" placeholder="HÄľadanie" tabindex="1" class="input-text expand" />
<input name="submit_search_simple" type="image" src="/images/design_resp/design/blank.png" alt="HÄľadaĹĄ" class="ico search-nosprite" /></form>
</div>
<div class="show-on-phones">
<a title="HÄľadajte ponuky práce podÄľa rĂ´znych kritĂ©riĂ">
</a>
</div>
</div>
<div class="row-header-favorite">
<div class="header-favorite">
<a title="Moje vybrané pracovné ponuky" class="ico-shopping-cart-toppanel" rel="nofollow" href="/user_details.php?action=show_my_offers&ref_top_panel=157">0</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
and i need access:
input name="tab_name" type="hidden"

You can use Linq to xml
var xDoc = XDocument.Load(pathToXmlFile); //XDocument.Parse(xmlstring);
var input = xDoc.Descendants("input")
.First(i=>(string)i.Attribute("name")=="tab_name");
XPath can be used too
var input = xDoc.XPathSelectElement("//input[#name='tab_name']");

If you need to access that element on server side, you'll need to add a runat attribute there (like this: runat="server"), to make it a server side control. I would strongly suggest making it a control of your page, then, so you can access it like any other variable. You would have to give it an ID, so at the very least you could fetch it through that property.
But! your problem seems to be more client side related, so I strongly, really strongly suggest you use jQuery instead. Get jQuery in your site, and it becomes as easy as:
$("input[name='tab_name']");
Or better yet, if you give it an ID:
$("#idYouGaveTotheField");

integrating recaptcha (with custom look) with asp.net

Im using asp.net/c# weborms. I've added recaptcha to the form and used what is on their site. It needs a custom look hence it's like this:
<div id="recaptcha_widget" style="display:none">
<div id="recaptcha_image"></div>
<div class="recaptcha_only_if_incorrect_sol" style="color:red">Incorrect please try again</div>
<span class="recaptcha_only_if_image">Enter the words above:</span>
<span class="recaptcha_only_if_audio">Enter the numbers you hear:</span>
<input type="text" id="recaptcha_response_field" name="recaptcha_response_field" />
<div>Get another CAPTCHA</div>
<div class="recaptcha_only_if_image">Get an audio CAPTCHA</div>
<div class="recaptcha_only_if_audio">Get an image CAPTCHA</div>
<div>Help</div>
</div>
<script type="text/javascript"
src="http://api.recaptcha.net/challenge?k=your_public_key">
</script>
<noscript>
<iframe src="http://api.recaptcha.net/noscript?k=your_public_key"
height="300" width="500" frameborder="0"></iframe><br>
<textarea name="recaptcha_challenge_field" rows="3" cols="40">
</textarea>
<input type="hidden" name="recaptcha_response_field"
value="manual_challenge">
</noscript>
what do i need to do in the button_click method in the code behind iof the form to check if the words eneterd by the user is correct. same for audio.
Thanks

Why don't you use the control that is delivered with reCaptcha? Here is the control and a quickstart.
reCaptcha Quickstart & Control

Like other validations you just need to check if(Page.IsValid) in behind code. just note that you have to add recaptcha control in your code and then add your customs them.
<recaptcha:RecaptchaControl ID="recaptcha" runat="server" PublicKey="your_public_key"
PrivateKey="Your_private_key" Theme="custom" />
<div id="recaptcha_widget" style="display:none">
<div id="recaptcha_image"></div>
<div class="recaptcha_only_if_incorrect_sol" style="color:red">Incorrect please try again</div>
...