ASP.NET 身份用户 ID 到 Int 错误转换失败 nvarchar 值

Question

我的代码工作正常，但是当我尝试通过在应用程序用户和所有类中添加将用户 ID 设置为 Int 而不是字符串时。添加迁移工作正常，但在更新数据库时出现以下错误。

Conversion failed when converting the nvarchar value '60b67a91-64e0-4dc7-a85c-abd9521a0b50' to data type int. The statement has been terminated.

代码如下

public class ApplicationUser : IdentityUser<int, CustomUserLogin, CustomUserRole,
   CustomUserClaim>
{

    public async Task<ClaimsIdentity> GenerateUserIdentityAsync(
UserManager<ApplicationUser, int> manager)
    {
        var userIdentity = await manager.CreateIdentityAsync(
            this, DefaultAuthenticationTypes.ApplicationCookie);
        return userIdentity;
    }
}

public class CustomUserRole : IdentityUserRole<int> { }
public class CustomUserClaim : IdentityUserClaim<int> { }
public class CustomUserLogin : IdentityUserLogin<int> { }

public class CustomRole : IdentityRole<int, CustomUserRole>
{
    public CustomRole() { }
    public CustomRole(string name) { Name = name; }
}

public class CustomUserStore : UserStore<ApplicationUser, CustomRole, int,
    CustomUserLogin, CustomUserRole, CustomUserClaim>
{
    public CustomUserStore(ClinicContext context)
        : base(context)
    {
    }
}

public class CustomRoleStore : RoleStore<CustomRole, int, CustomUserRole>
{
    public CustomRoleStore(ClinicContext context)
        : base(context)
    {
    }
}

public class CustomUserManager : UserManager<ApplicationUser, int>
{
    public CustomUserManager(CustomUserStore store) : base(store) { }

}
public class CustomRoleManager : RoleManager<CustomRole, int>
{
    public CustomRoleManager(CustomRoleStore store) : base(store) { }
}

我的数据库上下文为：

public partial class ClinicContext : IdentityDbContext<ApplicationUser, CustomRole,
    int, CustomUserLogin, CustomUserRole, CustomUserClaim>
    {
        public ClinicContext()
            : base("name=ClinicContext")
        {
        }
}

Answer 1

您的现有行具有 nvarchar 个 ID，而您的更新脚本不知道如何将 GUID 转换为 int。

如果您真的不需要这些数据，那么删除行可能是最简单的方法 -- 特别是如果您已将数据库配置为生成 ID。

ASP.NET 身份用户 ID 到 Int 错误转换失败 nvarchar 值

ASP.NET Identity User ID to Int error Conversion failed nvarchar Value

c#

asp.net

entity-framework

dbcontext

asp.net-identity