控制台输出在IIS托管应用程序中的哪里? [英] Where does console output go in an IIS hosted app?

问题描述

说我有一个WCF应用程序托管在IIS中.然后在该应用程序中运行以下代码行:

Say I have a WCF app hosted in IIS. And in that app I run this line of code:

 Console.WriteLine("Testing, testing 1 2 3");

该写在哪里?或者是它忽略，只是失去了?

Where will that be written to? Or is it ignored and just lost?

是否有必要在需要时捕获它?

Is there someway to capture it when needed?

推荐答案

无处.更具体地说:

NullStream ，它被定义为没有后备存储的流".所有方法都不执行或不执行任何操作.这是一个内部类到 Stream .以下代码摘自Microsoft的源代码.

NullStream, which is defined as "A Stream with no backing store.". All the methods do nothing or return nothing. It is an internal class to Stream. The following code is taken from Microsoft's source code.

基本上，当 Console 写入方法之一被调用时，第一个时，将对Windows API函数 GetStdHandle 进行调用标准输出".如果没有返回句柄，则会创建一个 NullStream 并用过.

Basically, when one of the Console write methods is call the first time, a call is made to the Windows API function GetStdHandle for "standard output". If no handle is returned a NullStream is created and used.

从这里引用: https://stackoverflow.com/a/2075892/12744

实际上，同样的答案也可以解决您问题的第二部分:

actually, the same answer goes to on to address the second part of your question too:

要实际重定向Console输出，无论项目类型如何，请使用

To actually redirect Console output, regardless of the project type, use

  Console.SetOut(New System.IO.StreamWriter("C:\ConsoleOutput.txt")),

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