c# - 什么是 HostProtectionAttribute，我们为什么要使用它？

Question

我想详细了解 C# 中的 HostProtectionAttribute。当然，我阅读了 MSDN 文档 this和 this但我不明白我们为什么要使用它。在文档中有诸如“主机编程模型”之类的术语，这让我对这个主题更加困惑。

假设我们有一个方法有这个属性，如果我删除它会发生什么？

Answer 1

如下文所述；

Given these attributes, SQL Server specifies a list of HPAs that are disallowed in the hosted environment through code access security (CAS). The CAS requirements are specified by one of three SQL Server permission sets: SAFE, EXTERNAL_ACCESS, or UNSAFE. One of these three security levels is specified when the assembly is registered on the server, using the CREATE ASSEMBLY statement. Code executing within the SAFE or EXTERNAL_ACCESS permission sets must avoid certain types or members that have the System.Security.Permissions.HostProtectionAttribute attribute applied.

The HostProtectionAttribute is not a security permission as much , in that **it identifies specific code constructs, either types or methods, that the host may disallow

I couldn't figure out why we use it.

我们用它来帮助我们在主机环境中编写可预测的代码，因为

it identifies specific code constructs, either types or methods, that the host may disallow

Suppose that we have a method that has this attribute and what happens if I delete it?

当您删除它时，如果该方法包含主机可能不允许的类型或某些代码构造，您将永远不会知道，因此它可能会导致您的代码在主机环境(例如 SQL Server)中出现不可预测的行为.我希望这能让它更有帮助。