I'm trying to add some roles and users to my project. I'm using ASP.NET Core version 3.1. Right now I tried this in my Startup class:
private async Task CreateRoles(IServiceProvider serviceProvider)
{
//initializing custom roles
var RoleManager = serviceProvider.GetRequiredService<RoleManager<IdentityRole>>();
var UserManager = serviceProvider.GetRequiredService<UserManager<ApplicationUser>>();
string[] roleNames = { "Admin", "Operacional"};
IdentityResult roleResult;
foreach (var roleName in roleNames)
{
var roleExist = await RoleManager.RoleExistsAsync(roleName);
// ensure that the role does not exist
if (!roleExist)
{
//create the roles and seed them to the database:
roleResult = await RoleManager.CreateAsync(new IdentityRole(roleName));
}
}
// find the user with the admin email
var _user = await UserManager.FindByEmailAsync("admin@gmail.com");
// check if the user exists
if (_user == null)
{
//Here you could create the super admin who will maintain the web app
var poweruser = new ApplicationUser
{
UserName = "Admin",
Email = "admin@gmail.com",
};
string adminPassword = "Abc*123";
var createPowerUser = await UserManager.CreateAsync(poweruser, adminPassword);
if (createPowerUser.Succeeded)
{
//here we tie the new user to the role
await UserManager.AddToRoleAsync(poweruser, "Admin");
}
}
}
and
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceProvider serviceProvider)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseAuthentication();
//SIGNAL R
//String caminho = configuration["AppSettings:Servidor"] + "/myHub";
String caminho = Configuration["AppSettings:Servidor"] + "/myHub";
//endpoints.MapHub<MyHub>(caminho);
//app.UseSignalR(route =>
//{
// route.MapHub<MyHub>(caminho);
//});
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapHub<MyHub>("/myHub");
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapRazorPages();
});
CreateRoles(serviceProvider).Wait();
}
When I run the project it gives me the error "System.AggregateException: 'No service for type 'Microsoft.AspNetCore.Identity.UserManager`1[ProjectName.ApplicationUser]' has been registered.able when container is destroy)'" in CreateRoles(serviceProvider).Wait(); Why is this happening?
Try to add services.AddDefaultIdentity<ApplicationUser>();
in your Startup.cs
.
For more info you can check the official docs .
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