.net - What is the difference between `marshal.ThrowExceptionForHRInternal` and `marshal.ThrowExceptionForHR`?

Question

marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo) is not documented anywhere and it's hard to interpret the stack trace without knowing what methods do.

Answer 1

它只是一个由两个公共 Marshal.ThrowExceptionForHR() 方法重载调用的内部辅助方法。不要射击信使，它只是将 COM 错误代码 (HR = HResult) 转换为托管异常并抛出该异常。希望您得到的异常表明出了什么问题。这通常不是那么清楚，COM 错误代码往往无法描述，尤其是在没有可用的 IErrorInfo 时。