C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.ComponentModel.DataAnnotations;

namespace HelloWorldMvcApp
{
	public class Produto{
	
		public int ProdutoID{get;set;}
		public String Nome{get;set;}
		public int CategoriaID{get;set;}
		public int SubCategoriaID{get;set;}
		
	}
	
	public class Categoria{
		
		public int CategoriaID{get;set;}
		public String Nome{get;set;}
	}
	
	public class SubCategoria{
		
		public int SubCategoriaID{get;set;}
		public String Nome{get;set;}
		public int CategoriaID{get;set;}
	}
}

Model

​x
 
using System;
using System.ComponentModel.DataAnnotations;
​
namespace HelloWorldMvcApp
{
    public class Produto{
    
        public int ProdutoID{get;set;}
        public String Nome{get;set;}
        public int CategoriaID{get;set;}
        public int SubCategoriaID{get;set;}
        
    }
    
    public class Categoria{
        
        public int CategoriaID{get;set;}
        public String Nome{get;set;}
    }
    
    public class SubCategoria{
        
        public int SubCategoriaID{get;set;}
        public String Nome{get;set;}
        public int CategoriaID{get;set;}
    }
}

@model HelloWorldMvcApp.Produto
@{
	Layout = null;
}

<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->

<html lang="en">
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>Bootstrap 101 Template</title>

		<!-- CSS Includes -->
		<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
		
		<style type="text/css">

			.field-validation-error {
				color: #ff0000;
			}

		</style>
	</head>
	
	<body>
		<div class="container">
			<div class="col-md-6 col-md-offset-3">
				<h1>Hello Stranger</h1>
	
				@using (Html.BeginForm())
				{
					<div class="form-group">
						@Html.LabelFor(m => m.Nome)
						@Html.TextBoxFor(model => model.Nome, new {@class="form-control"}) 
						@Html.ValidationMessageFor(model => model.Nome)
					</div>
				
				<div class="form-group">
						@Html.LabelFor(m => m.CategoriaID)
						@Html.DropDownList("Categoria", String.Empty) 
						@Html.ValidationMessageFor(model => model.CategoriaID)
					</div>
				<div class="form-group">

                    <div class="col-md-2">
                        Detalhes Técnicos:

                        <div id="ParamsCheckboxes">

                        </div>


                    </div>
                </div>
					<button type="button" class="btn btn-success submit">Ask</button>
				}
	
				<br/><br/>
				<div class="alert alert-warning fade">
					<img src="http://entechprod.blob.core.windows.net/dotnetfiddle/morpheus.jpg" style="max-width:100%;"/><br/><br/>
					<strong><span class="alert-content"></span></strong>
				</div>
			</div>
		</div>

		<!-- JS includes -->
		<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
		<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
	
		<script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
		<script src="//ajax.aspnetcdn.com/ajax/mvc/4.0/jquery.validate.unobtrusive.min.js"></script>
		
		<script type="text/javascript">
		
	
		
			$(function(){
		
		
		
				$('#Categoria').change(function(){
					
					
						$.ajax({
							url: '@Url.RouteUrl(new{ action="GetSubCategoria", controller="Home"})',
							data: {"Categoria": $('#Categoria').val()},
								type: 'GET',
								dataType: 'json',
								success: function(resp) {
								$.each(resp,function(key,value)
								{
			                       var newChk = "<input type='checkbox' name='SubCategoria' value='"+resp[key].SubCategoriaID+"' />" +resp[key].Nome + "<br />";
								   $("#ParamsCheckboxes").append(newChk);
								
								});
								
						}, error:function(index, e, error){
			                  alert(error);
			}});
					
				});
			
			});

		</script>
	</body>
</html>

View

 
@model HelloWorldMvcApp.Produto
@{
    Layout = null;
}
​
<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->
​
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Bootstrap 101 Template</title>
​
        <!-- CSS Includes -->
        <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
        
        <style type="text/css">
​
            .field-validation-error {
                color: #ff0000;
            }
​
        </style>
    </head>
    
    <body>
        <div class="container">
            <div class="col-md-6 col-md-offset-3">
                <h1>Hello Stranger</h1>
    
                @using (Html.BeginForm())
                {
                    <div class="form-group">
                        @Html.LabelFor(m => m.Nome)
                        @Html.TextBoxFor(model => model.Nome, new {@class="form-control"}) 
                        @Html.ValidationMessageFor(model => model.Nome)
                    </div>
                
                <div class="form-group">
                        @Html.LabelFor(m => m.CategoriaID)
                        @Html.DropDownList("Categoria", String.Empty) 
                        @Html.ValidationMessageFor(model => model.CategoriaID)
                    </div>
                <div class="form-group">
​
                    <div class="col-md-2">
                        Detalhes Técnicos:
​
                        <div id="ParamsCheckboxes">
​
                        </div>
​
​
                    </div>
                </div>
                    <button type="button" class="btn btn-success submit">Ask</button>
                }
    
                <br/><br/>
                <div class="alert alert-warning fade">
                    <img src="http://entechprod.blob.core.windows.net/dotnetfiddle/morpheus.jpg" style="max-width:100%;"/><br/><br/>
                    <strong><span class="alert-content"></span></strong>
                </div>
            </div>
        </div>
​
        <!-- JS includes -->
        <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
        <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
    
        <script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
        <script src="//ajax.aspnetcdn.com/ajax/mvc/4.0/jquery.validate.unobtrusive.min.js"></script>
        
        <script type="text/javascript">
        
    
        
            $(function(){
        
        
        
                $('#Categoria').change(function(){
                    
                    
                        $.ajax({
                            url: '@Url.RouteUrl(new{ action="GetSubCategoria", controller="Home"})',
                            data: {"Categoria": $('#Categoria').val()},
                                type: 'GET',
                                dataType: 'json',
                                success: function(resp) {
                                $.each(resp,function(key,value)
                                {
                                   var newChk = "<input type='checkbox' name='SubCategoria' value='"+resp[key].SubCategoriaID+"' />" +resp[key].Nome + "<br />";
                                   $("#ParamsCheckboxes").append(newChk);
                                
                                });
                                
                        }, error:function(index, e, error){
                              alert(error);
            }});
                    
                });
            
            });
​
        </script>
    </body>
</html>
​
​

using System;
using System.Web.Mvc;
using System.Collections.Generic;
using System.Linq;

namespace HelloWorldMvcApp
{
	public class HomeController : Controller
	{
		[HttpGet]
		public ActionResult Index()
		{
			var Categorias = new List<Categoria>{
				new Categoria{ CategoriaID=1, Nome ="Processador"},
				new Categoria{ CategoriaID=2, Nome ="Memoria"}
			};
			
			ViewBag.Categoria = new SelectList(Categorias, "CategoriaID","Nome");
			
			return View(new Produto());
		}


		[HttpGet]
		public JsonResult GetSubCategoria(int categoria)
		{				
			var SubCategorias = from s in _db where s.CategoriaID.Equals(categoria) select s;
			return Json(SubCategorias,JsonRequestBehavior.AllowGet);
		}

		private static Random _rnd = new Random();
		
		private  List<SubCategoria> _db = new List<SubCategoria> {
			new SubCategoria{SubCategoriaID=1, Nome="Intel I5", CategoriaID=1},
				new SubCategoria{SubCategoriaID=2, Nome="Intel I7", CategoriaID=1},
				new SubCategoria{SubCategoriaID=3, Nome="Xeon Z",CategoriaID=1}
				
		} ;
	}
}

Controller

 
using System;
using System.Web.Mvc;
using System.Collections.Generic;
using System.Linq;
​
namespace HelloWorldMvcApp
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            var Categorias = new List<Categoria>{
                new Categoria{ CategoriaID=1, Nome ="Processador"},
                new Categoria{ CategoriaID=2, Nome ="Memoria"}
            };
            
            ViewBag.Categoria = new SelectList(Categorias, "CategoriaID","Nome");
            
            return View(new Produto());
        }
​
​
        [HttpGet]
        public JsonResult GetSubCategoria(int categoria)
        {               
            var SubCategorias = from s in _db where s.CategoriaID.Equals(categoria) select s;
            return Json(SubCategorias,JsonRequestBehavior.AllowGet);
        }
​
        private static Random _rnd = new Random();
        
        private  List<SubCategoria> _db = new List<SubCategoria> {
            new SubCategoria{SubCategoriaID=1, Nome="Intel I5", CategoriaID=1},
                new SubCategoria{SubCategoriaID=2, Nome="Intel I7", CategoriaID=1},
                new SubCategoria{SubCategoriaID=3, Nome="Xeon Z",CategoriaID=1}
                
        } ;
    }
}

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