小编Cae*_*sar的帖子

我正在使用 Visual Studio 2013 Web 表单应用程序和 MySql 数据库来构建 Web 表单应用程序，但我无法通过“成员资格和角色管理”。我对会员资格使用了数据库优先方法，当我尝试注册新用户时，收到以下错误消息：

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: MySql.Data.MySqlClient.MySqlException: Unknown column   'Extent1.Discriminator' in 'where clause'

Source Error: 


Line 16:             var manager = new UserManager();
Line 17:             var user = new ApplicationUser() { UserName = UserName.Text };
Line 18:             IdentityResult result = manager.Create(user, Password.Text);
Line 19: …