asp.net-mvc - ASP.NET MVC 4 - WebSecurity.InitializeDatabaseConnection 调用多次错误

Question

我的 Migrations/Configuration.cs 中有一个 Seed 方法：

  protected override void Seed(MVC4App.Models.MVC4Entities context)
  {
     try
     {
        // Initialize database for Account
        WebSecurity.InitializeDatabaseConnection(
           "MVC4Entities", "Users", "UserId", "Email", autoCreateTables: true);

如果我尝试在我的开发机器上运行“update-database -verbose”，我会收到以下错误：

The "WebSecurity.InitializeDatabaseConnection" method can be called only once.

这是我的代码中唯一调用它的地方。我怎样才能解决这个问题？

谢谢

Answer 1

添加初始化检查：

if (!WebSecurity.Initialized)
{
WebSecurity.InitializeDatabaseConnection(
           "MVC4Entities", "Users", "UserId", "Email", autoCreateTables: true);
}