Question

我正尝试创建一个新用户和一个角色，并按照以下说明为该用户分配角色

var user = new User
{
    EmailAddress = email,
    Name = name,
    Surname = surName,
    UserName = email,
    Password = Guid.NewGuid().ToString(),
    TenantId = existingTenant.Id,
    CreatorUserId = AbpSession.UserId
};
user.SetNormalizedNames();

var existingUserId = _userRepository.InsertOrUpdateAndGetId(user);
existingUser = _userRepository.Get(existingUserId);

if (existingRole == null || existingRole.Id == 0)
{
    var newRole = new Role
    {
        DisplayName = role,
        Name = role,
        TenantId = existingTenant.Id,
        CreatorUserId = AbpSession.UserId
    };
    newRole.SetNormalizedName();
    var modifiedRole = _roleRepository.InsertOrUpdateAndGetId(newRole);
}
await _userManager.AddToRoleAsync(existingUser, role));
CurrentUnitOfWork.SaveChanges();

AddToRoleAsync 始终导致System.ArgumentNullException：值不能为null。参数名称：unitOfWork

我不确定可能出了什么问题。

Answer 1

我假设由于CurrentUnitOfWork的值而引发了异常。为了跟踪问题，请尝试使用IUnitOfWorkManager。

private readonly IUnitOfWorkManager _unitOfWorkManager;
...
using (var unitOfWork = _unitOfWorkManager.Begin())
        {
           //your operation 

            unitOfWork.Complete();
        }

System.ArgumentNullException：值不能为null。参数名称：unitOfWork

1 个答案: