为什么 System.Diagnostics.Debug.WriteLine 在 Visual Studio 2010 C# 中不起作用？
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Why does System.Diagnostics.Debug.WriteLine not work in Visual Studio 2010 C#?
提问by
I have the following line in my code:
我的代码中有以下行：
System.Diagnostics.Debug.WriteLine("Title:" + title + "title[top]: " + title[top] + "title[sub]: " + title[sub]);
When I debug I see it going to this line, but when I look at the output window in Visual Studio 2010 I don't see anything even though it shows for "Debug" and I ran using "debug > run". Why?
当我调试时，我看到它转到这一行，但是当我查看 Visual Studio 2010 中的输出窗口时，我看不到任何东西，即使它显示为“调试”并且我使用“调试>运行”运行。为什么？
采纳答案by Parag Meshram
Check following items -
检查以下项目 -
DEBUGmode is selected while debuggingDebugoption is selected in Output window -
- See if breakpoint is hitting Debug.WriteLine in code
- Insert
Debug.AutoFlush = trueat the beginning of code - Try checking if Platform for the solution is set to Any CPU and not x86 (or x64).
- Goto Project Properties--> Web - In the Debugger section, check the the ASP.NET option
DEBUG调试时选择模式Debug在输出窗口中选择了选项 -- 查看断点是否在代码中击中 Debug.WriteLine
Debug.AutoFlush = true在代码开头插入- 尝试检查解决方案的平台是否设置为 Any CPU 而不是 x86（或 x64）。
- 转到 Project Properties--> Web - 在 Debugger 部分，选中 ASP.NET 选项
Reference for Point #5(Read the comment, It worked for that guy)
第 5 点的参考（阅读评论，它对那个人有用）
回答by Rohit Vats
In your app.config file, make sure you don't have a <clear/>element in your trace listeners.
在您的 app.config 文件中，确保您<clear/>的跟踪侦听器中没有元素。
You will effectively be clearing the list of trace listeners, including the default trace listener used for Debug statements.
您将有效地清除跟踪侦听器列表，包括用于 Debug 语句的默认跟踪侦听器。
Here's what this would look like in your app.config file:
这是您的 app.config 文件中的样子：
<system.diagnostics>
<trace>
<listeners>
<!-- This next line is the troublemaker. If it is there delete it-->
<clear/>
</listeners>
</trace>
</system.diagnostics>
回答by Al Lelopath
For me, this solved the problem:
对我来说，这解决了问题：
System.Diagnostics.Trace.WriteLine("whatever");
(using Traceinstead of Debug)
（使用Trace代替Debug）
回答by JustAPup
For me, I needed to do this to solve the problem:
对我来说，我需要这样做来解决问题：
1. Open the project's property page
2. Under Build tab, check "Define DEBUG constant" and "Define Trace constant"
Voila!
瞧！
回答by Katsutoshi Hayashida
I had the same problem. Using Trace.WriteLine and checking "Define DEBUG constant" did not work for me.
我有同样的问题。使用 Trace.WriteLine 并检查“定义调试常量”对我不起作用。
I noticed that the output messages were found in Immediate window, instead of Output window.
我注意到输出消息是在立即窗口中找到的，而不是在输出窗口中。
Then I unchecked "Redirect all Output Window text to the Immediate Window" option in tools and solved my problem.
然后我取消选中工具中的“将所有输出窗口文本重定向到立即窗口”选项并解决了我的问题。
回答by Lucio Flavio
Using "System.Diagnostics.Debug.WriteLine" I've output in the Immediate Window :-O
使用“System.Diagnostics.Debug.WriteLine”我在即时窗口中输出：-O
