mvc_modelbinding | C# Online Compiler

mvc_modelbinding by not0000

using System;
using System.ComponentModel.DataAnnotations;

namespace HelloWorldMvcApp
{
	public class Member
	{
	    public int Id { get; set; }
	    public string Name { get; set; }
	}
}

Model

​x
 
using System;
using System.ComponentModel.DataAnnotations;
​
namespace HelloWorldMvcApp
{
    public class Member
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }
}

@{
	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>mvc_modelbinding</title>

		<!-- CSS Includes -->
		<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
		
	</head>
	
	<body>
		<div class="container">
			<div class="col-md-6 col-md-offset-3">
				<h1>Status=@ViewBag.status</h1>
	
				@using (Html.BeginForm())
				{
				<p>使用a[]沒有加index，收不到資料</p>
				<p>ViewBag.a1id = @ViewBag.a1id</p>	
					<div class="form-group">
    					<input type="text" name="a[].id" value="1" />
					    <input type="text" name="a[].name" value="2" />
					</div>
					<div class="form-group">
    					<input type="text" name="a[].id" value="3" />
					    <input type="text" name="a[].name" value="4" />
					</div>
					<hr>
					<p>使用b[0]、b[1]有加index，才能收到資料</p>
						<p>ViewBag.b1id = <span class="badge">@ViewBag.b1id</span> ViewBag.b1name =   <span class="badge">@ViewBag.b1name</span> </p>	
						
					<div class="form-group">
    					<input type="text" name="b[0].id" value="5" />
					    <input type="text" name="b[0].name" value="6" />
					</div>
					<div class="form-group">
    					<input type="text" name="b[1].id" value="7" />
					    <input type="text" name="b[1].name" value="8" />
					</div>
						
					<button type="submit" class="btn btn-success submit">總之先 submit，看 post 後的結果</button>
				}
	

		<!-- 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 type="text/javascript">
		

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

View

 
@{
    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>mvc_modelbinding</title>
​
        <!-- CSS Includes -->
        <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
        
    </head>
    
    <body>
        <div class="container">
            <div class="col-md-6 col-md-offset-3">
                <h1>Status=@ViewBag.status</h1>
    
                @using (Html.BeginForm())
                {
                <p>使用a[]沒有加index，收不到資料</p>
                <p>ViewBag.a1id = @ViewBag.a1id</p> 
                    <div class="form-group">
                        <input type="text" name="a[].id" value="1" />
                        <input type="text" name="a[].name" value="2" />
                    </div>
                    <div class="form-group">
                        <input type="text" name="a[].id" value="3" />
                        <input type="text" name="a[].name" value="4" />
                    </div>
                    <hr>
                    <p>使用b[0]、b[1]有加index，才能收到資料</p>
                        <p>ViewBag.b1id = <span class="badge">@ViewBag.b1id</span> ViewBag.b1name =   <span class="badge">@ViewBag.b1name</span> </p>   
                        
                    <div class="form-group">
                        <input type="text" name="b[0].id" value="5" />
                        <input type="text" name="b[0].name" value="6" />
                    </div>
                    <div class="form-group">
                        <input type="text" name="b[1].id" value="7" />
                        <input type="text" name="b[1].name" value="8" />
                    </div>
                        
                    <button type="submit" class="btn btn-success submit">總之先 submit，看 post 後的結果</button>
                }
    
​
        <!-- 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 type="text/javascript">
        
​
        </script>
    </body>
</html>
​

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

namespace HelloWorldMvcApp
{
	public class HomeController : Controller
	{
		[HttpGet]
		public ActionResult Index()
		{
			ViewBag.status="Before Post";
			return View();
		}

    	[HttpPost]
    	public ActionResult Index(List<Member> a,List<Member> b){
				Console.WriteLine("start");
				if(a==null){
					ViewBag.a1id = null; // 只會進到這邊
				}else{
					ViewBag.a1id = a[1].Id; //這邊是範例，實際上因為a收不到資料，所以進不來
				}
				
				ViewBag.b1id = b[1].Id;
				ViewBag.b1name = b[1].Name;
				ViewBag.status="After Post";
			return View();
    	}
	}
}

Controller

 
using System;
using System.Web.Mvc;
using System.Collections.Generic;
​
namespace HelloWorldMvcApp
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            ViewBag.status="Before Post";
            return View();
        }
​
        [HttpPost]
        public ActionResult Index(List<Member> a,List<Member> b){
                Console.WriteLine("start");
                if(a==null){
                    ViewBag.a1id = null; // 只會進到這邊
                }else{
                    ViewBag.a1id = a[1].Id; //這邊是範例，實際上因為a收不到資料，所以進不來
                }
                
                ViewBag.b1id = b[1].Id;
                ViewBag.b1name = b[1].Name;
                ViewBag.status="After Post";
            return View();
        }
    }
}

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saida = 11112234
saida2 = 11112234

Cached Result
Last Run:	2:53:30 am
Compile:	0.063s
Execute:	0s
Memory:	0b
CPU:	0.047s

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