How to customize the user registration process in ASP.NET Core Identity?

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Aryan Kumar · Answer

Customizing the user registration process in ASP.NET Core Identity allows you to tailor the registration flow to your specific application's needs. Here's a human-readable, undetectable guide on how to achieve this:
Create a Custom Registration View: Start by creating a custom registration view with the fields you want. You can add fields like "First Name," "Last Name," or any other custom information.
Create a ViewModel: To capture the data from your custom registration form, create a ViewModel class that matches the fields on your custom registration view. This ViewModel can contain properties for the user's email, password, and any additional custom fields.
Update the Registration Action: In your AccountController, update the registration action to handle the new ViewModel. You can use the
UserManager to create a new user and store the custom data.
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Taskandlt;IActionResult> Register(CustomRegistrationViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = new ApplicationUser { UserName = model.Email, Email = model.Email, FirstName = model.FirstName, LastName = model.LastName };
        var result = await _userManager.CreateAsync(user, model.Password);
        if (result.Succeeded)
        {
            // Handle successful registration
        }
        else
        {
            // Handle registration errors
        }
    }
    return View(model);
}
Configure Custom Validation: If you have custom validation requirements for the additional fields, you can add validation attributes to the properties in your ViewModel. For instance, you can use
[Required], [RegularExpression], or custom validation logic.
Update the Registration View: Update your registration view to include the new fields and validation messages for custom properties.
Handle User Data: Depending on your application's needs, you may need to store and manage the custom user data separately, or you can store it in the same user table along with the default Identity properties.
Database Migration: If you've added new fields to the user table, create and apply a database migration to update the database schema.
dotnet ef migrations add UpdateUserSchema
dotnet ef database update
Test the Custom Registration Process: Thoroughly test the custom registration process, including registration, validation, and storing the additional user information.
By following these steps, you can customize the user registration process in ASP.NET Core Identity to capture and manage custom user data while keeping your application organized and user-friendly. Be sure to adapt these instructions to your specific application's requirements.

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How to customize the user registration process in ASP.NET Core Identity?

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