BufferUnderrunLogin | C# Online Compiler

BufferUnderrunLogin by Karthidev

using System;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.Configuration;

using System.Data.SqlClient;

using System.Linq;

using System.Web;


namespace LoginFormApp.Models

{

    public class Login

    {

        [Required(ErrorMessage = "Username is required")] // make the field required

        [Display(Name = "Username")]  // Set the display name of the field

        public string username { get; set; }


        [Required(ErrorMessage = "Password is required")]

        [Display(Name = "Password")]

        public string password { get; set; }



        public bool checkUser(string username, string password) //This method check the user existence


        {

            bool flag = false;

           if(username == "Admin" && password == "Admin123")
		   {
		   		flag = true;
		   }
			return flag;
		}

    }

}

Model

​x
 
using System;
​
using System.Collections.Generic;
​
using System.ComponentModel.DataAnnotations;
​
using System.Configuration;
​
using System.Data.SqlClient;
​
using System.Linq;
​
using System.Web;
​
​
namespace LoginFormApp.Models
​
{
​
    public class Login
​
    {
​
        [Required(ErrorMessage = "Username is required")] // make the field required
​
        [Display(Name = "Username")]  // Set the display name of the field
​
        public string username { get; set; }
​
​
        [Required(ErrorMessage = "Password is required")]
​
        [Display(Name = "Password")]
​
        public string password { get; set; }
​
​
​
        public bool checkUser(string username, string password) //This method check the user existence
​
​
        {
​
            bool flag = false;
​
           if(username == "Admin" && password == "Admin123")
           {
                flag = true;
           }
            return flag;
        }
​
    }
​
}

@model LoginFormApp.Models.Login
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>

    <meta name="viewport" content="width=device-width" />

    <title>Index</title>
<style>
.wide
{
     width: 150px;
}
.formStyle
{
    margin:0 auto; 
	text-align: center; 
	border: 2px; 
	border-style: solid; 
	width:400px;
	background-color:bisque"

}
</style

</head>

<body>

    <div class="formStyle" >

        @using (Html.BeginForm())

        {

            <table>
				<tr>
					<td colspan=3 align="Center">  
						<B>Login Form</B>
					</td>
				</tr>

                <tr>

                    <td>@Html.LabelFor(m => m.username)</td> @*Label to display username*@

                    <td> @Html.TextBoxFor(m => m.username, new { @class= "wide" })</td> @*Textbox for user input*@

                   

<td>@Html.ValidationMessageFor(m => m.username)</td> @*Show validation error (if any) on form submission*@


                </tr>

                <tr>

                    <td>@Html.LabelFor(m => m.password)</td> @*Label for pasword*@


                    <td>@Html.PasswordFor(m => m.password, new { @class= "wide" })</td> @*Password box for inputting password*@


                    <td>@Html.ValidationMessageFor(m => m.password)</td> @*Show validation errors(if any) on form submission*@


                </tr>

                <tr>

                    <td></td>

                    <td>

                        <input type="submit" value="Submit" /></td>

                </tr>

                <tr>

                    <td></td>

                    <td>

                        @ViewBag.Message

                    </td>

                </tr>

            </table>

        }

    </div>

</body>

</html>

View

 
@model LoginFormApp.Models.Login
@{
    Layout = null;
}
​
<!DOCTYPE html>
​
<html>
<head>
​
    <meta name="viewport" content="width=device-width" />
​
    <title>Index</title>
<style>
.wide
{
     width: 150px;
}
.formStyle
{
    margin:0 auto; 
    text-align: center; 
    border: 2px; 
    border-style: solid; 
    width:400px;
    background-color:bisque"
​
}
</style
​
</head>
​
<body>
​
    <div class="formStyle" >
​
        @using (Html.BeginForm())
​
        {
​
            <table>
                <tr>
                    <td colspan=3 align="Center">  
                        <B>Login Form</B>
                    </td>
                </tr>
​
                <tr>
​
                    <td>@Html.LabelFor(m => m.username)</td> @*Label to display username*@
​
                    <td> @Html.TextBoxFor(m => m.username, new { @class= "wide" })</td> @*Textbox for user input*@
​
                   
​
<td>@Html.ValidationMessageFor(m => m.username)</td> @*Show validation error (if any) on form submission*@
​
​
                </tr>
​
                <tr>
​
                    <td>@Html.LabelFor(m => m.password)</td> @*Label for pasword*@
​
​
                    <td>@Html.PasswordFor(m => m.password, new { @class= "wide" })</td> @*Password box for inputting password*@
​
​
                    <td>@Html.ValidationMessageFor(m => m.password)</td> @*Show validation errors(if any) on form submission*@
​
​
                </tr>
​
                <tr>
​
                    <td></td>
​
                    <td>
​
                        <input type="submit" value="Submit" /></td>
​
                </tr>
​
                <tr>
​
                    <td></td>
​
                    <td>
​
                        @ViewBag.Message
​
                    </td>
​
                </tr>
​
            </table>
​
        }
​
    </div>
​
</body>
​
</html>

using LoginFormApp.Models;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace LoginFormApp.Controllers
{
	public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ViewResult Index(Login login)
        {
            if (ModelState.IsValid) // Check the model state for any validation errors
            {
                if (login.checkUser(login.username, login.password)) // Calls the Login class checkUser() for existence of the user in the database.
                {
					ViewBag.Message = String.Format("Hello {0} Welcome to Bufferunderrun", login.username);
                    return View(); // Return the "Show.cshtml" view if user is valid
                }
                else
                {
                    ViewBag.Message = "Invalid Username or Password";
                    return View(); //return the same view with message "Invalid Username or Password"
                }
            }
            else
            {
                return View(); // Return the same view with validation errors.
            }
        }
    }
}

Controller

 
using LoginFormApp.Models;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Mvc;
​
namespace LoginFormApp.Controllers
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            return View();
        }
​
        [HttpPost]
        public ViewResult Index(Login login)
        {
            if (ModelState.IsValid) // Check the model state for any validation errors
            {
                if (login.checkUser(login.username, login.password)) // Calls the Login class checkUser() for existence of the user in the database.
                {
                    ViewBag.Message = String.Format("Hello {0} Welcome to Bufferunderrun", login.username);
                    return View(); // Return the "Show.cshtml" view if user is valid
                }
                else
                {
                    ViewBag.Message = "Invalid Username or Password";
                    return View(); //return the same view with message "Invalid Username or Password"
                }
            }
            else
            {
                return View(); // Return the same view with validation errors.
            }
        }
    }
}

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Cached Result
Last Run:	6:25:07 am
Compile:	0.007s
Execute:	0.06s
Memory:	5.09Mb
CPU:	0.067s

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