Why doesn't Console.Writeline, Console.Write work in Visual Studio Express?

Question

I just open a console application and I type

Console.WriteLine("Test");

But the output window doesn't show this. I go to the output window with Ctrl+W,O

But nothing shows up when I run my program, am I nuts or is this not supported in the visual studio 2010 express?

Answer 1

Console.WriteLine writes your output to the console window opened by your application (think black window with white text that appears when you open the Command Prompt.) Try System.Diagnostics.Debug.WriteLine instead.

Answer 2

No satisfactory answers provided.

System.Diagnostics.Debug.WriteLine() will write messages to the Output:debug window, but so much crap is constantly dumped into that window by every process under the sun, it is like finding a needle in a haystack to find YOUR messages.

Console.WriteLine() does not write to any window in Visual Studio. I guess it will only write to the application console if your application creates a console in the first place, i.e. if it is a Console application.

Why is the tooling making the simple task of having your web application server side code .cs code write some debug messages into a window which is swamped with crap making it almost impossible to find your information?

Answer 3

Go to properties in you own project in Solution Explorer window and choose application type and look for Output Type and change it's value to Console Application . This will make console screen besides your form. If you close console screen, your form will be closed too.

Good luck.

Answer 4

Perhaps the console is clearing. Try:

Console.WriteLine("Test");
Console.ReadLine();

And it will hopefully stay there until you press enter.

Answer 5

Or you can debug by CTRL+F5 this will open ConsoleWindow waits after last line executed untill you press key.

Answer 6

It's more than likely because you've used Console in the namespace. For example like this:

namespace XYZApplication.Console
{
    class Program
    {
        static void Main(string[] args)
       {
            //Some code;             
       }
    }
}

Try removing it from the namespace or use the full namespace instead i.e.

   System.Console.Writeline("abc");

Answer 7

Try ctrl+F5, it will hold your Screen until you press any key. Regards

Answer 8

The output window isn't the console. Try the methods in System.Diagnostics.Debug

Answer 9

In Winforms app, both methods:

System.Diagnostics.Debug.WriteLine("my string")

and

System.Console.WriteLine("my string")

write to the output window.

In AspNetCore app, only System.Diagnostics.Debug.WriteLine("my string") writes to the output window.

Answer 10

Right click on the project in solution-explorer and click "clean".

Now run F5

Make sure the code is as below:

Console.WriteLine("TEST");
Console.ReadLine();

Answer 11

I run into a similar problem while running a Unit Test. Console.WriteLine() did not write anything into the VS Output Window.

Using System.Diagnostics.Debug.WriteLine() solved the problem.

Answer 12

If you use Ctrl-F5 (start without debugging) it will leave the console window open with a message "Press any key to continue". That's the easiest way to keep the console window from closing so you can see the console output.

Answer 13

Go to the Debug menu and select Options and uncheck "Redirect all Output Window text to Immediate Window"

Answer 14

Console.Writeline() shows up in the debug output (Debug => Windows => Output).

Answer 15

If you are developing a command line application, you can also use Console.ReadLine() at the end of your code to wait for the 'Enter' keypress before closing the console window so that you can read your output.

Answer 16

using System.Diagnostics;


Trace.WriteLine("This line will show on Output window"); 
Trace.Flush();

This works on Microsoft Team Explorer for Visual Studio 2013

Refer to microsoft.com

Answer 17

Workaround I found:

Press Ctrl + Alt + I or navigate to "Debug Tab" ---> "Windows" ---> "Immediate".

In your code write:

Trace.WriteLine("This is one of the workaround");

Answer 18

The Output window of Visual Studio 2017 have a menu called Show output from, in my case ASP.NET Core Web Server was the option to select in order to see the printed out, I came across this issue since I had it set to Build so I wasn't seeing the printed out lines at runtime.

Answer 19

There are 2 possible problems are:

• Firstly, you have not used the using System which should be before writing code that uses "System class", as Console.WriteLine()
• Secondly, you have not coded what happens after the Console displays "Test"

The possible solution will be:

using System;

namespace Test
{
    public static Main()
    {
        //Print to the console
        Console.WriteLine("Test");

        //Allow user to read output
        Console.ReadKey();
    }
}

It is also strategic to code Console.Write("Press any key to exit..."); on the line that precedes the Console.ReadKey(); to make the user aware that the program is ending, he/she must press any key to exit.

Answer 20

None of the answers here worked for me!! Most of these people here are stuck in Windows Desktop Application Consoleland. If you are a web developer using ASP.NET in Visual Studio and do not see any console or debug text, here is how to fix that:

1. Paste the following two tests into your code so it runs both lines. These are tests for the output window:

   System.Console.WriteLine($"hello console!");

   System.Diagnostics.Debug.WriteLine($"hello debugger!");

2. In Visual Studio choose VIEW > OUTPUT. You will see the results above in this output window after changing two settings below.

3. When NOT DEBUGGING, in the OUTPUT window at the top under "Show Output From" choose: "YourProjectName - ASP.NET CORE Web Server". Run your code. You should see the "Console" text above.

4. When DEBUGGING, in the OUTPUT window at the top under "Show Output From" choose: "Debugger". Run your code in debug mode. You should see the "Debug" text above.