ASP.NET MVC 4 - WebSecurity.InitializeDatabaseConnection多次调用错误

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'，我会收到此错误：

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

这是我的代码中唯一被调用的地方。我该如何解决这个问题？

由于

Answer 1

添加初始化检查：

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