Range Validation in Web API

Introduction

• Step 1  Create a New Project  Open visual studio 2013 -> click on File -> New Project -> Create new ASP.NET MVC  Web Application -> Name it as SampleRangeValidation,

  

• Step 2  Now find the Models folder in solution created and right click on it and add a class named Testclient as shown below

     

Using the code

using System.ComponentModel.DataAnnotations;

namespace SampleRangeValidation.Models
{
    public class Testclient
    {

        [Required(ErrorMessage = "Pleasee enter Total Students")]
        [Range(0, 100, ErrorMessage = "Enter number between 0 to 100")]
        public int TotalStudents { get; set; }
    }
}

• Step 3  Now Lets modify the Homecontroller  which we can find in Controllers folder..add the following implementation

using SampleRangeValidation.Models;
using System.Web.Mvc;

namespace SampleRangeValidation.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            ViewBag.Title = "Home Page";

            return View();
        }
        [HttpPost]
        public ActionResult Index(Testclient objclient)
        {
            if (ModelState.IsValid)
            {
                ViewBag.message = "Now The number is in Range";
            }
            return View();
        }
    }
}

@model SampleRangeValidation.Models.Testclient
@{
    ViewBag.Title = "Index";
}
@using (Html.BeginForm("Index", "Home"))
{
    <fieldset>
       
            <h1>Add Total students</h1>

        @Html.TextBoxFor(m => m.TotalStudents)
        @Html.ValidationMessageFor(m => m.TotalStudents)
        <p>
            <input type="submit" value="Submit" />
        </p>
        @ViewBag.message
    </fieldset>
}

 After user input we can see the following validation message

Conclusion