调试期间如何在 ASP.NET (C#) 中使用 Console.WriteLine？
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How to use Console.WriteLine in ASP.NET (C#) during debug?
提问by Leap Bun
I want to write some result to the console in ASP.NET (C#). It works in a Window application, but a Web application does not work. Here is what I have tried:
我想在 ASP.NET (C#) 中向控制台写入一些结果。它适用于 Window 应用程序，但不适用于 Web 应用程序。这是我尝试过的：
protected void btonClick_Click(object sender, EventArgs e)
{
Console.WriteLine("You click me ...................");
System.Diagnostics.Debug.WriteLine("You click me ..................");
System.Diagnostics.Trace.WriteLine("You click me ..................");
}
But I see nothing in the Output panel. How do I solve this problem?
但是我在“输出”面板中什么也没看到。我该如何解决这个问题？
采纳答案by PraveenVenu
Console.Write will not work in ASP.NET as it is called using the browser. Use Response.Write instead.
Console.Write 在 ASP.NET 中不起作用，因为它是使用浏览器调用的。改用 Response.Write。
See Stack Overflow question Where does Console.WriteLine go in ASP.NET?.
请参阅堆栈溢出问题Console.WriteLine 在 ASP.NET 中的位置？.
If you want to write something to Output window during debugging, you can use
如果你想在调试过程中向输出窗口写一些东西，你可以使用
System.Diagnostics.Debug.WriteLine("SomeText");
but this will work only during debug.
但这仅在调试期间有效。
See Stack Overflow question Debug.WriteLine not working.
请参阅堆栈溢出问题Debug.WriteLine not working。
回答by cillierscharl
using System.Diagnostics;
using System.Diagnostics;
The following will print to your output as long as the dropdown is set to 'Debug' as shown below.
只要下拉列表设置为“调试”，以下内容就会打印到您的输出，如下所示。
Debug.WriteLine("Hello, world!");
Debug.WriteLine("Hello, world!");
回答by David
If for whatever reason you'd like to catch the output of Console.WriteLine, you CAN do this:
如果出于某种原因您想捕获 的输出Console.WriteLine，您可以这样做：
protected void Application_Start(object sender, EventArgs e)
{
var writer = new LogWriter();
Console.SetOut(writer);
}
public class LogWriter : TextWriter
{
public override void WriteLine(string value)
{
//do whatever with value
}
public override Encoding Encoding
{
get { return Encoding.Default; }
}
}
回答by DeepakJoseLopez
Trace.Write("Error Message") and Trace.Warn("Error Message") are the methods to use in web, need to decorate the page header trace=true and in config file to hide the error message text to go to end-user and so as to stay in iis itself for programmer debug.
Trace.Write("Error Message") 和 Trace.Warn("Error Message") 是web中使用的方法，需要修饰页眉trace=true，并在配置文件中隐藏错误信息文本去结束-user 等，以便留在 iis 本身以供程序员调试。
回答by albin.varghese
Use response.write method in the code-behind.
在代码隐藏中使用 response.write 方法。
回答by phn
Make sure you start your application in Debug mode (F5), not without debugging (Ctrl+F5) and then select "Show output from: Debug" in the Output panel in Visual Studio.
确保在调试模式 ( F5)下启动应用程序，而不是在没有调试的情况下 ( Ctrl+ F5)，然后在 Visual Studio 的“输出”面板中选择“显示输出：调试”。
