Tuesday, 24 October 2017

RegularExpression Data Annotation example: Perform validations using RegularExpression Data Annotation in ASP.Net MVC

RegularExpression Data Annotation example: Perform validations using RegularExpression Data Annotation in ASP.Net MVC

Description:

In this example we explain that how perform Regular Expression using Data Annotation in Asp.Net MVC.or Regular Expression using Data Annotation using MVC.the Data Annotation can be applied to Model properties and used for the Regular Expression Validation in MVC Razor view.
Model:

public class EmployeeModel
    {
        [Display(Name = "Username")]
        [Required(ErrorMessage = "Username is required.")]
        [RegularExpression("^[a-zA-Z0-9]*$", ErrorMessage = "Only Alphabets and Numbers allowed.")]
        public string UserName { get; set; }
    }

Controller:

public class EmployeeController : Controller
    {
        // GET: Home
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(EmployeeModel employee)
        {
            return View();
        }
    }

View: 

@model Alphanumeric_Validation_MVC.Models.PersonModel

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <title>RegularExpression Data Annotation example: Perform validations using RegularExpression Data Annotation in ASP.Net MVC</title>
    <style type="text/css">
        body {
            font-family: Arial;
            font-size: 10pt;
        }
        .error {
            color: red;
        }
    </style>
</head>
<body>
    @using (Html.BeginForm("Index", "Employee", FormMethod.Post))
    {
        <table>
            <tr>
                <td>@Html.LabelFor(m => m.UserName)</td>
                <td>@Html.TextBoxFor(m => m.UserName)</td>
                <td>@Html.ValidationMessageFor(m => m.UserName, "", new { @class = "error" })</td>
            </tr>
            <tr>
                <td></td>
                <td><input type="submit" value="Submit"/></td>
                <td></td>
            </tr>
        </table>
    }
</body>
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/jqueryval")
</html>


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