c# - 系统.安全.HostProtectionException : Attempted to perform an operation that was forbidden by the CLR host

Question

我在我的 SQLCLR 项目中使用线程，当我尝试运行我的用户定义函数时出现以下错误。我可以做些什么来在我的项目中启用并行库和 await/async 等线程？

Msg 6522, Level 16, State 1, Line 4
A .NET Framework error occurred during execution of user-defined routine or aggregate "CalculateInfo":
  System.Security.HostProtectionException: Attempted to perform an operation that was forbidden by the CLR host.

    The protected resources (only available with full trust) were: All
    The demanded resources were: Synchronization, ExternalThreading

    System.Security.HostProtectionException:
        at UserDefinedFunctions.getData()
        at UserDefinedFunctions.CalculateInfo()

Answer 1

此错误，如您在其他问题中所述，Deploying SQLCLR project fails when creating assembly in database , 需要满足以下条件:

ALTER ASSEMBLY [AssemblyName]
   WITH PERMISSION_SET = UNSAFE;

有关一般使用 SQLCLR 的更多信息，请访问:SQLCLR Info