Active Select option in Razor - asp.net-mvc

I am working on a mobile version of my website. I have the option Action working however when I select, for example "About" it will take me to the correct page but the navigation bar goes back to the "Home" option. How do I go about doing this? thanks in advance
<select class="navbar-nav" style="width:250px" onchange='location.href = this.value'>
<option value="#Url.Action("Index", "Home")">Home</option>
<option value="#Url.Action("About", "Home")">About</option>
<option value="#Url.Action("Products", "Home")">Products</option>
<option value="#Url.Action("Services", "Home")">Services</option>
<option value="#Url.Action("Contact", "Home")">Contact</option>
</select>

<option selected="#ViewBag.Home" value="#Url.Action("Index", "Home")">Home</option>
<option selected="#ViewBag.About" value="#Url.Action("About", "Home")">About</option>
<option selected="#ViewBag.Products" value="#Url.Action("Products", "Home")">Products</option>
<option selected="#ViewBag.Services" value="#Url.Action("Services", "Home")">Services</option>
<option selected="#ViewBag.Contact" value="#Url.Action("Contact", "Home")">Contact</option>
and in your Home.cshtml
#{
ViewBag.Home = true;
}
and the other pages.

You can do it like this :
#{
Dictionary<string, string> menu = new Dictionary<string, string>();
menu.Add("Home", #Url.Action("Index", "Home"));
menu.Add("About", #Url.Action("About", "Home"));
menu.Add("Products", #Url.Action("Products", "Home"));
menu.Add("Services", #Url.Action("Services", "Home"));
menu.Add("Contact", #Url.Action("Contact", "Home"));
}
<select class="navbar-nav" style="width:250px" onchange='location.href = this.value'>
#foreach (var m in menu)
{
<option value="#m.Value" #(m.Value == Request.Url.AbsoluteUri ? "selected='selected' " : "")>#m.Key</option>
}
</select>

Related

Drop down item not being selected by default in Razor view

I have the following code written in Razor view in MVC in C#. I want to select one of the item based on value but it is not working. I confirmed that the variable Facilities contain value Un-Funded but it doesn't select this item.
<select id="facilities" class="form-control" style="width:200px;">
<option #{ if (Facilities == "Funded") { Response.Write(" selected "); } }>Funded</option>
<option #{ if (Facilities == "Un-Funded") { Response.Write(" selected "); } }>Un-Funded</option>
</select>
Here's screenshot of how HTML looks like. Notice it is not printing selected for any of the option.
I am using Response.Write which doesn't work in Razor view. Using #Html.Raw("some string") fixed the issue. So the code will look like this:
#{ if(Facilities == "Funded") { #Html.Raw("selected='selected'") } }
You can try to use js,so that if you have many options,you don't need to check on each option:
<select id="facilities" class="form-control" style="width:200px;">
<option value="Funded">Funded</option>
<option value="Un-Funded">Un-Funded</option>
</select>
<script>
$(function () {
$("#facilities").val("#Facilities");
//Or you can use $("#facilities").val(#Html.Raw(Json.Encode(Facilities)));
})
</script>
With MVC 5 you can use this method #: to insert your selected:
<select id="facilities" class="form-control" style="width:200px;">
<option value="Funded" #{ if (Facilities == "Funded") { #: selected="selected"
}}>
Funded
</option>
<option value="Un-Funded" #{ if (Facilities == "Un-Funded") { #: selected="selected"
}}>
Un-Funded
</option>
</select>
for older version you can check this link :
setting-the-selected-option-in-mvc3

Cascade drop-down in MVC View without ajax?

I created one View Model with two Entities. I am passing this view model to my MVC Razor view which have two html drop-downs for each entity respectively.
<select class="form-control" id="Employees" name="Employees">
#foreach (var employee in Model.Employees)
{
<option value="#employee.Id"> #employee.name </option>
}
</select>
<select class="form-control" id="Tasks" name="Tasks">
#foreach (var task in Model.Tasks)
{
<option value="#task.Id"> #task.name </option>
}
</select>
Employee table is the parent of Task table. What I want is getting all the tasks which are related to particular employee only. e.g. In Employee drop-down I select John, then in Tasks drop-down I should get all the tasks which are relative to John. I know how to do this with ajax. I am looking for some other solution.
Is it possible to do something like this:
#foreach (var task in Model.Tasks.Where(x=>x.employeeId == 'Selected in previous dropdown'))
{
<option value="#task.Id"> #task.name </option>
}
Html block
<select id="Employees">
<option value="">Select Employee</option>
<option value="1">Employee1</option>
<option value="2">Employee2</option>
</select>
<select id="Tasks">
<option value="">Select Task</option>
<option value="1" data-employee="1">Employee1Task1</option>
<option value="2" data-employee="1">Employee1Task2</option>
<option value="3" data-employee="1">Employee1Task3</option>
<option value="1" data-employee="2">Employee2Task1</option>
<option value="2" data-employee="2">Employee2Task2</option>
<option value="3" data-employee="2">Employee2Task3</option>
</select>
Script scetion
<script>
$(document).ready(function () {
//on page ready hide all task option
$("#Tasks").find('option').hide();
// set task as empty
$("#Tasks").val('');
// onchange of employee Drop down
$("#Employees").on('change', function () {
var selectedEmployee = $("#Employees").val();
if (selectedEmployee != '') {
$("#Tasks").find('option').hide();
$("#Tasks option[value='']").show();
$('*[data-employee="' + selectedEmployee + '"]').show();
}
else {
// if employee not selected then hide all tasks
$("#Tasks").find('option').hide();
$("#Tasks").val('');
}
});
});
</script>
Please populate country and state drop down list using MVC way by for each loop and use above script. The mandatory case is you have to render all cascade options
<select class="form-control" id="Employees" name="Employees">
#foreach (var employee in Model.Employees)
{
<option value="#employee.Id"> #employee.name </option>
}
</select>
<select class="form-control" id="Tasks" name="Tasks">
#foreach (var task in Model.Tasks)
{
<option value="#task.Id" data-employee="#task.EmployeeId"> #task.name </option>
}
</select>

changes to &nbsp in asp.net mvc html.dropdownlist

I want to show items with indention in html.dropdownlist
this is code in controller
IEnumerable<ViewModels.testvm> test = db.Database.SqlQuery<ViewModels.testvm>(#"WITH tree (id, parentid, level, title, rn) as
(
some code
)
***********SELECT id,REPLICATE(' ',level) + title as title
FROM tree
order by RN");
ViewBag.ParentID = new SelectList(test, "ID", "Title");
as you can see I add &nbsp to dropdown items in replecate
but the problem is &nbsp shows in dropdown.
this is view > source result:
<select class="form-control" id="ParentID" name="ParentID"><option
value="10">Menu1</option>
<option value="11">&nbsp;Sub1</option>
<option value="14">&nbsp;Submenu1</option>
<option value="12">Menu2</option>
<option value="16">&nbsp;sub2</option>
<option value="13">Menu3</option>
<option value="15">&nbsp;sub3</option>
<option value="17">&nbsp;&nbsp;sub sub</option>
<option value="22">&nbsp;&nbsp;&nbsp;sub3 sub sub</option>
<option value="19">menu4</option>
<option value="20">&nbsp;sub4</option>
<option value="21">menu5</option>
</select>
as you can see converted to &nbsp;
I tried "\xA0" instead of &nbsp but it shows in dropdown too!
I think html.raw can solve this, but I don't know how can I use it with html.dropdownlist.
this is view
<div class="col-md-10">
#Html.DropDownList( "ParentID", null, htmlAttributes: new { #class = "form-
control" })
</div>
any Idea?
Edit
by changing view like this the problem solved:
I tried this after checked a post as answer
<select class="form-control" id="ParentID" name="ParentID">
<option value="0">First Level</option>
#foreach (var item in ViewBag.ParentID)
{
<option value="#item.Value">#Html.Raw(#item.Text)</option>
}
</select>
You can manually create the dropdown list assuming you place your collection in a ViewModel member called ParentIDs:
The View:
#if (Model.ParentIDs.Any())
{
<select class="form-control" id="ParentID" name="ParentID">
#foreach (var item in Model.ParentIDs)
{
if (Model.ParentID == item.id)
{
<option value="#item.id" selected>#item.title</option>
}
else
{
<option value="#item.id">#item.title</option>
}
}
</select>
}

How to dynamically filter a select2 listing based on option class

I have a dropdown select of optional 'opportunities' (id="opportunities" in the example below) which I enhance using the select2 jquery plugin, and wish to dynamically filter this list in order to reduce the possible options presented to a user using a 2nd select dropdown (id="group-select" in the example below),
<label>
Select an opportunity<br>
<select id="opportunities" style="width:300px;" multiple="multiple" name="selected-opps" value="">
<optgroup label="Class A">
<option class="group-1" value="1a">Opportunity 1a</option>
<option class="group-2" value="2a">Opportunity 2a</option>
</optgroup>
<optgroup label="Class B">
<option class="group-1" value="1b">Opportunity 1b</option>
<option class="group-2" value="2b">Opportunity 2b</option>
</optgroup>
<optgroup label="Class C">
<option class="group-1" value="1c">Opportunity 1c</option>
<option class="group-2" value="2c">Opportunity 2c</option>
</optgroup>
</select>
</label>
<select id="group-select">
<option value="">Select a group</option>
<option value="group-1">group 1</option>
<option value="group-2">group 2</option>
</select>
</div>
<div id="select-opportunity"></div>
<script type="text/javascript">
(function( $ ) {
'use strict';
var opportunities = $('select#opportunities').select2({
dropdownParent: $('#select-opportunity')
});
})( jQuery );
</script>
I wish to be able to make a selection in the 2nd select, say 'group 1' and would like the select2 list to contain only 'group-1' items as per the option in the first select dropdown that have the grouo-1 class attribute.
I managed to solve this using 2 optional functionality provided by the select2 plugin, namely the ability to control the way items are built and displayed using the templating functionality, and using the programmatic control exposed in the plugin. I replaced the javascript appended below the example in the question with,
<script type="text/javascript">
(function( $ ) {
'use strict';
var opportunities = $('select#opportunities').select2({
dropdownParent: $('#select-opportunity'),
templateResult: formatItem
});
function formatItem (state) {
if (!state.id) { return state.text; }
//change the id of our select2 items
state._resultId = state._resultId+'-'+state.element.className;
var $state = $(
'<span class="opportunity-item ' + state.element.className + '">' + state.text + '</span>'
);
return $state;
}
$('select#group-select').change( function() {
//hide the unwanted options
var group = $('select#group-select option:selected').val();
//clear the styling element
$('style#select2-style').empty();
if(group){
//if a group is selected we need to hide all the others
$('select#group-select option').not(':selected').each(function(){
group = $(this).val();
if(group){
$('style#select2-style').append(
'li[id$="'+group+'"]{display:none;}'
);
}
});
}
//force the select2 to referesh by opening and closing it again
opportunities.select2('open');
opportunities.select2('close');
});
})( jQuery );
</script>
<style id="select2-style"></style>
I have also added an empty <style> element at the bottom in which I dynamically create the rules required to hide the unwanted items.
The logic
The code above creates templating function formatItem that the select2 plugin will use to format the items. The item state object is passed to the function which includes the unique id for each item.
This id is modified by appending the class of the corresponding option element.
When a group option is selected in the 2nd dropdown select (#group-select) a set of styling is created and appended to the bottom <style> element to hide all the elements whose id attributes end with the class names to be hidden, for example if one seleced group-1, the code will create a style to hide group-2 items,
li[id$="group-2"] {
display:none;
}
However for this to work we need to force the select2 dropdown to refresh to pick up the new styling and the only way I found for this work was to use the programmatic control of the plugin to 'open' and immediately 'close' the select2 dropdown.
ّshort Example .
window.templateResult = function templateResult(state) {
if (state.text.indexOf('ss') == -1)
return null;///hide
if (!state.id) { return state.text; }
var $state = $(
'<span>' + state.text + '</span>'
);
return $state;
};
//Init
$("#select1").select2({
templateResult: templateResult
});
ّFull Example below.
$(document).ready(function () {
//general custom filter
window.Select2FilterFunc = function (state) { return "Default" };
//general custom templateResult
window.templateResult = function templateResult(state) {
//call custom filter
var result = Select2FilterFunc(state);
if (result != "Default")
return result;
if (!state.id) { return state.text; }
var $state = $(
'<span>' + state.text + '</span>'
);
return $state;
};
//Init
$("#select1").select2({
templateResult: templateResult
});
//Add Custom Filter when opening
$('#select1').on('select2:opening', function (evt) {
//set your filter
window.Select2FilterFunc = function (state) {
if (state.text.indexOf('ss') == -1)
return null;//hide item
else
return "Default";
};
}).on('select2:close', function (evt) {
window.Select2FilterFunc = function (state) { return "Default" };
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>
<select id="select1" class="js-states form-control" style="width:300px" multiple="multiple ">
<optgroup label="Alaskan/Hawaiian Time Zone">
<option value="AK" title="11111111">Alaska</option>
<option value="HI" title="2222">Hawaii </option>
</optgroup>
<optgroup label="Pacific Time Zone">
<option value="CA">California</option>
<option value="NV">Nevada</option>
<option value="OR">Oregon</option>
<option value="WA">Washington</option>
</optgroup>
<optgroup label="Mountain Time Zone">
<option value="AZ">Arizona</option>
<option value="CO">Colorado</option>
<option value="ID">Idaho</option>
<option value="MT">Montana</option>
<option value="NE">Nebraska</option>
<option value="NM">New Mexico</option>
<option value="ND">North Dakota</option>
<option value="UT">Utah</option>
<option value="WY">Wyoming</option>
</optgroup>
<optgroup label="Central Time Zone">
<option value="AL">Alabama</option>
<option value="AR">Arkansas</option>
<option value="IL">Illinois</option>
<option value="IA">Iowa</option>
<option value="KS">Kansas</option>
<option value="KY">Kentucky</option>
<option value="LA">Louisiana</option>
<option value="MN">Minnesota</option>
<option value="MS">Mississippi</option>
<option value="MO">Missouri</option>
<option value="OK">Oklahoma</option>
<option value="SD">South Dakota</option>
<option value="TX">Texas</option>
<option value="TN">Tennessee</option>
<option value="WI">Wisconsin</option>
</optgroup>
<optgroup label="Eastern Time Zone">
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>
<option value="FL">Florida</option>
<option value="GA">Georgia</option>
<option value="IN">Indiana</option>
<option value="ME">Maine</option>
<option value="MD">Maryland</option>
<option value="MA">Massachusetts</option>
<option value="MI">Michigan</option>
<option value="NH">New Hampshire</option>
<option value="NJ">New Jersey</option>
<option value="NY">New York</option>
<option value="NC">North Carolina</option>
<option value="OH">Ohio</option>
<option value="PA">Pennsylvania</option>
<option value="RI">Rhode Island</option>
<option value="SC">South Carolina</option>
<option value="VT">Vermont</option>
<option value="VA">Virginia</option>
<option value="WV">West Virginia</option>
</optgroup>
</select>

Dropdowns - selects dynamics-jquery

I'm try to do a dynamic selects with jQuery, example:
<select >
<option value=1> 1</option>
<option value=2> 2</option>
<option value=3> 3</option>
<option value=4> 4</option>
</select>
when I get value="x"
I would like to add
count=x;
for(int i=1 ; i<=count; i++){
<select > </select>
}
I have a problem with me code , this code add and add.. I dont want this
I just want add the 'x' select
http://jsfiddle.net/hqLPp/48/
If you want result on same page, then this might be useful,
this will be on your page, where you want result
<script>
function showSelectBox(str)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("myresult").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","test.php?q="+str,true); // Pass value to another page Here->test
xmlhttp.send();
}
</script>
<select name='check' onchange="showSelectBox(this.value)">
<option>Select</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<div id="myresult">
</div>
Now On test.php Simply Call Value & put select box,
<?php
$q = $_GET['q'];
for($i=1 ; $i<=$q; $i++)
{
echo '<select > </select>';
}
?>

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