توضیح مفصلی در مورد Helper Button و CheckBox Helper در MVC

 @Html.RadioButtonFor(m => m.Gender,"Male")
 @Html.RadioButtonFor(m => m.Gender,"Female")

 Male: @Html.RadioButton("Gender","Male")  
 Female: @Html.RadioButton("Gender","Female") 

namespace Dynamicappendpartial.Models
{
public class SurveyForm
 {
public int id { 
get; 
set;
 }
[Display(Name = "Name")]
public string U_Name { 
get; 
set;
}
public string Gender { 
get; 
 set;
}
[Display(Name = "ContactNo")]
public long Contact_no { 
get; 
set;
}
}
}

using System;
using System.Collections.Generic;
using System.Data;
using Dynamicappendpartial.Models;

namespace Dynamicappendpartial.Controllers
{
public class SurveyFormsController: Controller
{
private PartialDbContext db = new PartialDbContext();
public ActionResult Create()
{
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "id,U_Name,Gender,Contact_no")] SurveyForm surveyForm)
{
if (ModelState.IsValid)
{
db.SurveyForms.Add(surveyForm);
 db.SaveChanges();
return RedirectToAction("Index");
}
return View(surveyForm);
}  
}
}

@model Dynamicappendpartial.Models.survey form

@using (Html.BeginForm()) 
{
@Html.AntiForgeryToken()<div class="form-horizontal"><h4>SurveyForm</h4>
<hr>@Html.ValidationSummary(true, "", new { @class = "text-danger" })<div class="form-group">@Html.LabelFor(model => model.U_Name, htmlAttributes: new { @class = "control-label col-md-2" })<div class="col-md-10">@Html.EditorFor(model => model.U_Name, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.U_Name, "", new { @class = "text-danger" })</div></div>
<div class="form-group">@Html.LabelFor(model => model.Gender, htmlAttributes: new { @class = "control-label col-md-2" })<div class="col-md-10">@Html.RadioButtonFor(model => model.Gender, "Male") Male @Html.RadioButtonFor(model => model.Gender, "Female") Female @Html.ValidationMessageFor(model => model.Gender, "", new { @class = "text-danger" })</div></div>
<div class="form-group">@Html.LabelFor(model => model.Contact_no, htmlAttributes: new { @class = "control-label col-md-2" })<div class="col-md-10">@Html.EditorFor(model => model.Contact_no, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Contact_no, "", new { @class = "text-danger" })</div></div>
<div class="form-group"><div class="col-md-offset-2 col-md-10"><input class="btn btn-default" type="submit" value="Submit"></div></div></div>
}
<div>@Html.ActionLink("Back to List", "Index")</div>

@Html.CheckBoxFor(m => m.ASP.NET MVC)
@Html.CheckBoxFor(m => m.NET Core)
@Html.CheckBoxFor(m => m.JAVA)
@Html.CheckBoxFor(m => m.Angular)

@Html.CheckBox("ASP.NET MVC", true)
@Html.CheckBox("NET Core", false)

@Html.CheckBox("JAVA", false)
@Html.CheckBox("Angular", false)

CREATE TABLE User_City
(
  ID INT IDENTITY PRIMARY KEY,
  C_Name NVARCHAR(100) NOT NULL,
  IsSelected BIT NOT NULL
)
Insert into User_City values ('Pune', 0)
Insert into User_City values ('Ahmedabad', 0)
Insert into User_City values ('Cuttack', 1)
Insert into User_City values ('Mumbai', 0)
Insert into User_City values ('Bangalore', 0)
Insert into User_City values ('Delhi', 0)
Insert into User_City values ('Hyderabad', 1)

using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Mvc;
using Dynamicappendpartial.Models;

namespace Dynamicappendpartial.Controllers
{
public class User_CityController : Controller
{
private Entities db = new Entities();

[HttpGet]
public ActionResult Index()
{
return View(db.User_City.ToList());
}
[HttpPost]
public string Index(IEnumerable<user_city> user_Cities)
{
if(user_Cities.Count(x => x.IsSelected) == 0)
{
 return "You have not select any city";
}
else
{
StringBuilder sb = new StringBuilder();
sb.Append("Your selected city is -");
foreach(User_City user_City in user_Cities)
{
if(user_City.IsSelected)
{
sb.Append(user_City.C_Name + " , ");
}
}
sb.Remove(sb.ToString().LastIndexOf(" , "), 1);
return sb.ToString();
}
}
}
}
</user_city>

@model List<dynamicappendpartial.models.user_city>
@{
ViewBag.Title = "Index";
}
@using (Html.BeginForm())
{


for (var i = 0; i < Model.Count(); i++)
{<table><tbody><tr><td> </td></tr></tbody><tbody><tr><td> </td><td>
@Html.HiddenFor(it => it[i].ID)
@Html.HiddenFor(it => it[i].C_Name)
@Html.DisplayFor(it => it[i].C_Name)</td><td> </td><td>
@Html.CheckBoxFor(it => it[i].IsSelected, new { Style = "vertical-align:3px ; margin-left:2px;}" })</td><td> </td></tr><tr><td> </td></tr></tbody></table>
}
<input id="Submit1" type="submit" value="submit">
}
</dynamicappendpartial.models.user_city>