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<!DOCTYPE html>
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<title>How to extend ASP.NET Core Identity user</title>
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<li class="active"><a href="https://adrientorris.github.io/aspnet-core/identity/extend-user-model.html" title="How to extend ASP.NET Core Identity user">How to extend ASP.NET Core Identity user</a></li>
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<h1>How to extend ASP.NET Core Identity user</h1>
<p>ASP.NET Core Identity has a default implementation that you can easily extend to provide your needs, like add a first name and a last name to the users (we will not create new tables here).</p>
<ul class="steps">
<li>
<span class="step_number">1</span>
First step to do that, implement the identity user, and add the properties you need.<br />You also have to create the columns in your database, with the same names than the properties.
<pre><code class="csharp">
// Add profile data for application users by adding properties to the ApplicationUser class
public class ApplicationUser : IdentityUser
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
</code></pre>
</li>
<li>
<span class="step_number">2</span>
SignInManager<TUser> is a class responsible for signing users into your application. Internally, this class uses a IUserClaimsPrincipalFactory<TUser> to generate a ClaimsPrincipal from your user. To add claims to this factory (by default, IUserClaimsPrincipalFactory<TUser> manages only two claims : username and user's identifier), you have to create you own implementation of IUserClaimsPrincipalFactory<TUser> by inheriting the default one :
<pre><code class="csharp">
public class AppClaimsPrincipalFactory : UserClaimsPrincipalFactory<ApplicationUser, IdentityRole>
{
public AppClaimsPrincipalFactory(
UserManager<ApplicationUser> userManager
, RoleManager<IdentityRole> roleManager
, IOptions<IdentityOptions> optionsAccessor)
: base(userManager, roleManager, optionsAccessor)
{ }
public async override Task<ClaimsPrincipal> CreateAsync(ApplicationUser user)
{
var principal = await base.CreateAsync(user);
if (!string.IsNullOrWhiteSpace(user.FirstName))
{
((ClaimsIdentity)principal.Identity).AddClaims(new[] {
new Claim(ClaimTypes.GivenName, user.FirstName)
});
}
if (!string.IsNullOrWhiteSpace(user.LastName))
{
((ClaimsIdentity)principal.Identity).AddClaims(new[] {
new Claim(ClaimTypes.Surname, user.LastName),
});
}
return principal;
}
}
</code></pre>
</li>
<li>
<span class="step_number">3</span>
Finally, you have to register the custom factory you just created in your application startup class, after adding Identity service.
<pre><code class="csharp">
public void ConfigureServices(IServiceCollection services)
{
// [...]
services.AddDbContext<SecurityDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("Security")));
services.AddIdentity<ApplicationUser, IdentityRole>()
.AddEntityFrameworkStores<SecurityDbContext>()
.AddDefaultTokenProviders();
services.AddScoped<Microsoft.AspNetCore.Identity.IUserClaimsPrincipalFactory<ApplicationUser>, AppClaimsPrincipalFactory>();
// [...]
}
</code></pre>
</li>
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<div id="crdny">
30/10/2016
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<li>ASP.NET Core</li>
<li>Identity</li>
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<li><a href="https://docs.asp.net/en/latest/security/authentication/identity.html" title="Introduction to Identity" target="_Blank">Introduction to Identity</a></li>
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