获取.Net核心WebAPI中的所有身份角色

using Microsoft.AspNetCore.Identity;

public class YourController : ControllerBase
{
    private readonly RoleManager<IdentityRole> _roleManager;

    public YourController(RoleManager<IdentityRole> roleManager)
    {
        _roleManager = roleManager;
    }

    public IEnumerable<IdentityRole> GetAllRoles()
    {
        return _roleManager.Roles;
    }
}

using YourDbContextNamespace;

public class YourController : ControllerBase
{
    private readonly YourDbContext _dbContext;

    public YourController(YourDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    public IEnumerable<string> GetAllRoles()
    {
        return _dbContext.Roles.Select(r => r.Name);
    }
}