摘要：C# .NET HttpWebRequest 按每个（单个）请求跳过证书校验 自签名证书 HTTPS TLS 。 使用.NET 4.5 新加的属性 HttpWebRequest.ServerCertificateValidationCallback。 HttpWebRequest request = 阅读全文

摘要：The model backing the 'MainDbContext' context has changed since the database was created. Consider using Code First Migrations to update the database 阅读全文