ASP.NET 核心 - 错误 CS0246 找不到类型或命名空间名称'ApplicationUserRole<>'

Question

在ASP.NET Core-6中，我正试图提取我的所有Identity用户及其关联角色来进行用户管理。

应用程序用户

using Microsoft.AspNetCore.Identity;
namespace Core.Infrastructure.Identity
{
public class ApplicationUser : IdentityUser
{
public ICollection<ApplicationUserRole> UserRoles { get; set; }
}
}

应用程序用户角色

using Microsoft.AspNetCore.Identity;
namespace Core.Infrastructure.Identity
{
public class ApplicationUserRole : IdentityUserRole<string>
{
public virtual ApplicationUser User { get; set; }
public virtual ApplicationRole Role { get; set; }
}
}

应用程序角色

using Microsoft.AspNetCore.Identity;
namespace Core.Infrastructure.Identity
{
public class ApplicationRole : IdentityRole
{
public ICollection<ApplicationUserRole> UserRoles { get; set; }
}
}

应用程序用户配置

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
namespace Core.Persistence.Configurations
{
public class ApplicationUserConfigurations : IEntityTypeConfiguration<ApplicationUser>
{
public void Configure(EntityTypeBuilder<ApplicationUser> builder)
{
builder.Property(u => u.IsActive).HasDefaultValue(true);
builder.Property(u => u.IsAdmin).HasDefaultValue(false);
builder.Property(u => u.IsPasswordChanged).HasDefaultValue(false);
builder.Property(u => u.IsDeleted).HasDefaultValue(false);
}
}
}

应用程序角色配置

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
namespace Core.Persistence.Configurations
{
public class ApplicationRoleConfigurations : IEntityTypeConfiguration<ApplicationRole>
{
public void Configure(EntityTypeBuilder<ApplicationRole> builder)
{
builder.HasIndex(r => r.Name).IsUnique();
builder.Property(r => r.IsActive).HasDefaultValue(true);
}
}
}

ApplicationUserRoleConfigurations

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
public class ApplicationUserRoleConfigurations : IEntityTypeConfiguration<ApplicationUserRole<string>>
{
public void Configure(EntityTypeBuilder<ApplicationUserRole<string>> builder)
{
builder.HasKey(ur => new { ur.UserId, ur.RoleId });
builder.HasOne(ur => ur.Role)
.WithMany(r => r.UserRoles)
.HasForeignKey(ur => ur.RoleId)
.IsRequired();
builder.HasOne(ur => ur.User)
.WithMany(r => r.UserRoles)
.HasForeignKey(ur => ur.UserId)
.IsRequired();
}
}

DBContext

public class ApplicationDbContext
: IdentityDbContext<ApplicationUser, ApplicationRole, string, IdentityUserClaim<string>,
ApplicationUserRole, IdentityUserLogin<string>,
IdentityRoleClaim<string>, IdentityUserToken<string>>
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
: base(options)
{
}
protected override void OnModelCreating(ModelBuilder builder)
{
builder.ApplyConfigurationsFromAssembly(typeof(ApplicationDbContext).Assembly);
base.OnModelCreating(builder);
// Customize ASP.NET Identity models and override defaults
// such as renaming ASP.NET Identity, changing key types etc.
builder.ApplyConfiguration(new ApplicationUserConfigurations());
builder.ApplyConfiguration(new ApplicationUserRoleConfigurations());
builder.ApplyConfiguration(new IdentityRoleClaimConfigurations());
builder.ApplyConfiguration(new IdentityUserClaimConfigurations());
builder.ApplyConfiguration(new IdentityUserLoginConfigurations());
builder.ApplyConfiguration(new IdentityUserClaimConfigurations());
builder.ApplyConfiguration(new ApplicationRoleConfigurations());
}
}

我有ApplicationUserRoleConfigurations问题

我得到了这个错误：

错误CS0246类型或命名空间名称"ApplicationUserRole<gt；'找不到(您是否缺少using指令或程序集引用？(

然后，<ApplicationUserRole>在ApplicationUserRoleConfigurations中突出显示

如何解决此问题？

感谢

Answer 1

正如错误所说，您是否缺少using指令？如果您认为自己是而不是，那么通过显示文件的名称空间来证明，特别是ApplicationRole.cs和ApplicationUserRoleConfigurations.cs。它们很可能在不同的命名空间中！

Answer 2

将Core.Infrastructure.Identity的使用添加到类文件

using Core.Infrastructure.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
public class ApplicationUserRoleConfigurations : IEntityTypeConfiguration<ApplicationUserRole<string>>
{

或者将其放在同一名称空间中

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
namespace Core.Infrastructure.Identity
{
public class ApplicationUserRoleConfigurations : IEntityTypeConfiguration<ApplicationUserRole<string>>
{

Answer 3

尝试使用：

public class ApplicationUserRoleConfigurations : IEntityTypeConfiguration<ApplicationUserRole>