How to login with "username" instead of "email address" in ASP.Net Web Forms Identity

Question

I need to set my login to use username instead of email address, how can I change it? I've looked everywhere but they are MVC codes not web forms.

I appreciate your efforts in reaching a solution for my problem.

using System;
using System.Web;
using System.Web.UI;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;
using Owin;
using Web_WebApp.Models;

namespace Web_WebApp.Account
{
    public partial class Login : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            RegisterHyperLink.NavigateUrl = "Register";
            // Enable this once you have account confirmation enabled for password reset functionality
            //ForgotPasswordHyperLink.NavigateUrl = "Forgot";
            OpenAuthLogin.ReturnUrl = Request.QueryString["ReturnUrl"];
            var returnUrl = HttpUtility.UrlEncode(Request.QueryString["ReturnUrl"]);
            if (!String.IsNullOrEmpty(returnUrl))
            {
                RegisterHyperLink.NavigateUrl += "?ReturnUrl=" + returnUrl;
            }
        }

        protected void LogIn(object sender, EventArgs e)
        {
            if (IsValid)
            {
                // Validate the user password
                var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
                var signinManager = Context.GetOwinContext().GetUserManager<ApplicationSignInManager>();

                // This doen't count login failures towards account lockout
                // To enable password failures to trigger lockout, change to shouldLockout: true
                var result = signinManager.PasswordSignIn(UserName.Text, Password.Text, RememberMe.Checked, shouldLockout: false);

                switch (result)
                {
                    case SignInStatus.Success:
                        IdentityHelper.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
                        break;
                    case SignInStatus.LockedOut:
                        Response.Redirect("/Account/Lockout");
                        break;
                    case SignInStatus.RequiresVerification:
                        Response.Redirect(String.Format("/Account/TwoFactorAuthenticationSignIn?ReturnUrl={0}&RememberMe={1}", 
                                                        Request.QueryString["ReturnUrl"],
                                                        RememberMe.Checked),
                                          true);
                        break;
                    case SignInStatus.Failure:
                    default:
                        FailureText.Text = "Invalid login attempt";
                        ErrorMessage.Visible = true;
                        break;
                }
            }
        }
    }
}

---

using System;
using System.Linq;
using System.Web;
using System.Web.UI;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;
using Owin;
using Web_WebApp.Models;


namespace Web_WebApp.Account
{
    public partial class Register : Page
    {
        protected void CreateUser_Click(object sender, EventArgs e)
        {

            var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
            var signInManager = Context.GetOwinContext().Get<ApplicationSignInManager>();
            var user = new ApplicationUser() { UserName = UserName.Text, Email = Email.Text, FirstName = FirstName.Text, MiddleName = MiddleName.Text, LastName = LastName.Text };
            IdentityResult result = manager.Create(user, Password.Text);
            if (result.Succeeded)
            {
                // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                //string code = manager.GenerateEmailConfirmationToken(user.Id);
                //string callbackUrl = IdentityHelper.GetUserConfirmationRedirectUrl(code, user.Id, Request);
                //manager.SendEmail(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>.");

                signInManager.SignIn( user, isPersistent: false, rememberBrowser: false);
                IdentityHelper.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
            }
            else 
            {
                ErrorMessage.Text = result.Errors.FirstOrDefault();
            }
        }
    }
}

Answer 1

You could simply find the user by username or anything you want and then sign in the user with SignIn method directly:

protected void LogIn(object sender, EventArgs e)
{
    if (IsValid)
    {
        // Validate the user password
        var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
        var signinManager = Context.GetOwinContext().GetUserManager<ApplicationSignInManager>();

        // assuming you have a text box named UserName
        var user=manager.FindByName(UserName.Text);
        // or for advanced scenarios you can write:
        // var user = manager.Users.FirstOrDefault(u => u.UserName == UserName.Text);
        if(user !=null)
        {
            if(manager.CheckPassword(user, Password.Text))
            {
                signinManager.SignIn(user, false, RememberMe.Checked);
                IdentityHelper.RedirectToReturnUrl(Request.QueryString["ReturnUrl"], Response);
            }
        }
    }
    FailureText.Text = "Invalid login attempt";
    ErrorMessage.Visible = true;
}

Answer 2

If you look at the SignInManagerExtensions.PasswordSignIn MSDN, this will tell you that the first argument in the PasswordSignIn method is userName.

MVC & WebForms by default set this to Email as you register with an email address. You can change the Register Action too to allow registering with a UserName, this by default adds the email as UserName and Email in the database.

protected void CreateUser_Click(object sender, EventArgs e)
{
    // ...
    // UserName and Email are both set to Email.text
    // Add a UserName TextBox and Replace UserName = Email.Text with UserName = UserName.Text
    var user = new ApplicationUser() { UserName = Email.Text, Email = Email.Text };
    // ...
}


protected void LogIn(object sender, EventArgs e)
{
    if (IsValid)
    {
        // ...
        // The first argument is userName
        // Replace mail.Text with UserName.Text
        var result = signinManager.PasswordSignIn(mail.Text, Password.Text, RememberMe.Checked, shouldLockout: false);
        // ..
    }
}

Replace:

<div class="form-group">
    <asp:Label runat="server" AssociatedControlID="Email" CssClass="col-md-2 control-label">Email</asp:Label>
    <div class="col-md-10">
        <asp:TextBox runat="server" ID="Email" CssClass="form-control" TextMode="Email" />
        <asp:RequiredFieldValidator runat="server" ControlToValidate="Email"
            CssClass="text-danger" ErrorMessage="The email field is required." />
    </div>
</div>

With:

<div class="form-group">
    <asp:Label runat="server" AssociatedControlID="UserName" CssClass="col-md-2 control-label">UserName</asp:Label>
    <div class="col-md-10">
        <asp:TextBox runat="server" ID="UserName" CssClass="form-control" />
        <asp:RequiredFieldValidator runat="server" ControlToValidate="UserName"
            CssClass="text-danger" ErrorMessage="The username field is required." />
    </div>
</div>

I Hope this makes sense.