TextWriterTraceListener Not Creating File

Nathan Sokalski 4,111

I am attempting to use TextWriterTraceListener for the first time. I currently have the following code:

TextWriterTraceListener testresultslistener = new TextWriterTraceListener("MyOutput.txt");  
testresultslistener.WriteLine("My Output");

However, it does not seem to be creating a file. What am I doing wrong?

Viorel 118.5K Reputation points

2022-10-01T19:14:06.307+00:00
Probably you did not check the output folder of your application or of your test project. What kind of projects do you have?

By the way, it seems that you should call testresultslistener.Flush( ) or use an approach like this:

TextWriterTraceListener testresultslistener = new TextWriterTraceListener( "MyOutput.txt" ); Trace.AutoFlush = true; Trace.Listeners.Add( testresultslistener ); . . . Trace.TraceInformation( "My Output" );
Nathan Sokalski 4,111 Reputation points

2022-10-02T01:16:27.387+00:00

My Project is a Xamarin.Android app. What do you mean by "output folder"?
Jack J Jun 24,606 Reputation points Microsoft Vendor

2022-10-11T09:26:53.887+00:00

@Nathan Sokalski , is any update? Do you have time check if my answer works for you?

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Jack J Jun 24,606 Reputation points Microsoft Vendor

2022-10-05T02:41:30.82+00:00
@Nathan Sokalski , based on my test, Viorel's code is correct. The output folder means that bin/debug folder, like the following:

You also use the following code to get your current output path.

string directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

Best Regards,
Jack

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Nathan Sokalski 4,111 Reputation points

2022-10-11T17:59:59.233+00:00

The following code outputs the code to the Output window:

TextWriterTraceListener testresultslistener = new TextWriterTraceListener("TestResults.txt");
Trace.AutoFlush= true;
Trace.Listeners.Add(testresultslistener);
Trace.TraceInformation("Test Trace Info");

Is there a step I am forgetting?

Jack J Jun 24,606 Reputation points Microsoft Vendor

2022-10-12T07:53:37.477+00:00

@Nathan Sokalski , thanks for the feedback, based on my test, I could use your code to create a file. What is your current problem? Can't create the file or can not get the wanted output?

Nathan Sokalski 4,111 Reputation points

2022-10-12T19:00:13.563+00:00

The file does not get created. As stated, it is still outputting it to the Output window instead of a file.

Jack J Jun 24,606 Reputation points Microsoft Vendor

2022-10-13T03:08:43.587+00:00

@Nathan Sokalski , based on my test, I could generate the file by using the same code with you. Mabe our environment is different. My environment is windows10, .net framework 4.8 console app. What is your environment?

Also, I recommend that you use the absolute path to check if the file is created, like the following:

TextWriterTraceListener testresultslistener = new TextWriterTraceListener(@"C:\Users\username\TestResults.txt");
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