Console writeline does not work

Question

I'm debugging a UWP in C#. On a certain moment the console stops giving me the write line content.

Does anyone can imagen what the problem could be?

Twopence

The output window isn't the console – Cattan

You mean Debug.WriteLine – Magnetite

use Debug.WriteLine instead – Stoppage

Console.WriteLine or Debug.Writeline are inappropriate for tracing or logging. Use a proper logging library – Cattan

BTW Debug.WriteLine won't work in Release builds. – Cattan

Console.WriteLine() works fine, but for some project it does not. With WPF + .Net Framework it works, with WPF + .Net Core 3 it does not. – Almund

Answer 1

The Console.WriteLine isn't for IDE output window. It writes to console. So, you could use Debug.WriteLine() which is available in System.Diagnostics

Scout

Only for debug builds though – Cattan

Also remember that you need DEBUG flag to use this. see HERE – Triecious

Oh man, I totally forgot which one to use. Why doesn't Console.WriteLine throw an error when there's no console? – Expediential

Answer 2

Console.WriteLine or Debug.Writeline are inappropriate for tracing or logging. The real solution is to use a logging library.

The Output Window of the debugger is not the console. If you want to write to it use Debug.WriteLine. You can do this because the Output Window is registered as a listener for .NET's tracing infrastructure.

This won't work in Release mode though. You'd need to use Trace.WriteLine for this but you'd also need to register your own listeners. You'd also need to specify message levels to separate errors from verbose messages and eg write only erros to log files.

At this point though, it's just as easy to add and configure a logging library like Serilog or NLog that have providers for rolling files, databases, logging servers etc.

Cattan

Answer 3

If you wanna see some messages in "Output" you should use Debug.WriteLine. For this add using System.Diagnostics.

If you use WindowsForm, for example, you can't just use Console.WriteLine.

Udometer