Trying to Write from Debug window to External File: FAIL

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I have been trying for days to write the last 5 five lines of the debug window into an external text file. No matter what I do, it fails. Now I am having issues with the third line from the bottom "sb.ToString().Split('\n').Reverse()" underlined in red. The ERROR Reads: No overload for method 'Reverse' takes 0 arguments. I don't know what this means and I don't know how to fix it. Can someone please help.

C#

using System;
using System.IO;
using System.Text;
using System.Diagnostics;
using System.Collections;
namespace Applica
{
    static class Program
    {
        static void Main(string[] args)
        {
            byte[] data = new byte[] {1,2,3,4,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,72,101,108,111,13,10};
            for (int i = 0; i < 28; i++)
            {
                //Console.WriteLine("{0}",data[i]);
                StringBuilder sb = new StringBuilder();
                StringWriter sw = new StringWriter(sb);
                TextWriterTraceListener myWriter = new TextWriterTraceListener(sw);
                Debug.Listeners.Add(myWriter);
                string output = string.Join("\n", sb.ToString().Split('\n').Reverse().Take(5).Reverse());
                string path = @"c:\temp\Log.txt";
                File.WriteAllText(path, output);
            }
        }
    }
}

Posted 26-May-15 10:04am

computerpublic

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ZurdoDev 26-May-15 16:21pm

Reverse is a static method on Array and not to be used on this instance.

See https://msdn.microsoft.com/en-us/library/d3877932(v=vs.110).aspx

So, you would call Array.Reverse(sb.ToString().Split('\n'));

Sergey Alexandrovich Kryukov 26-May-15 17:27pm

The whole idea of writing lines of some window to a file is wrong. You are not writing anything "from a window". You just write some data to file.
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2015-05-26T11:32:00

Solution 1

Your problem is: you are correctly using TextWriterTraceListener, but it is used for tracing or debugging output. But you are not writing anything to Trace, so there is nothing to capture. The whole code simply makes no sense.

Read MSDN documentation thoroughly, pay attention for the code sample, read all about it and also Trace and Debug:
https://msdn.microsoft.com/en-us/library/system.diagnostics.textwritertracelistener%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.diagnostics.trace%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.diagnostics.debug(v=vs.110).aspx[^].

—SA

Posted 26-May-15 11:32am

Sergey Alexandrovich Kryukov

Comments

computerpublic 27-May-15 5:53am

Sir,
I have read the msdn's and looked at the examples. I dont understand why you say I am not writing anything to Trace. Can you show me how to fix the String Output line?

Sergey Alexandrovich Kryukov 27-May-15 9:09am

Because you don't show any Trace code. Where?
If you simply want to do output, do it, why capturing anything (nothing, in this case)?
Again, look at the code sample.
—SA

computerpublic 28-May-15 0:48am

The following is the only example that comes anywhere close to what i am trying to accomplish, however I don't understand how to put the last 5 lines of the debugger inside it.
// Create a file for output named TestFile.txt.
Stream myFile = File.Create(@"c:\check\TestFile.txt");
//* Create a new text writer using the output stream, and add it to
// * the trace listeners.
TextWriterTraceListener myTextListener = new TextWriterTraceListener(myFile);
Trace.Listeners.Add(myTextListener);
//Write output to the file.
Trace.Write("test");
// Flush the output.
Trace.Flush();

Sergey Alexandrovich Kryukov 28-May-15 0:53am

All right, this is completely different story: Trace is used. And I explain why your code sample produces no content in the file: because nothing was sent to output. Isn't that clear? If it is, will you accept the answer formally?
—SA

computerpublic 28-May-15 19:41pm

I still do not understand how to get the last 5 lines of the debugger. Its been several days. I did as you told me and I am still stuck. What exactly do you want me accept? I just to get the thing to work. Can you show me how to get the last 5 lines of the debugger into an external file?

computerpublic 28-May-15 19:55pm

correction: I don't care about the debugger because it seems like this is not the issue. What I want to do is simply run a program and have the last five(5) results of variables uint A, uint B, and uint C go straight to an external file called c:\test. Can you please show me how to do this?

Sergey Alexandrovich Kryukov 28-May-15 20:45pm

Write them to trace. Or don't do trace, just write them to console. Read documentation carefully.
—SA

computerpublic 29-May-15 6:44am

This is useless, you have me going around in circles and you offer no help at all. You know that I am new to programming and you are being difficult. Please don't waste my time anymore.

Sergey Alexandrovich Kryukov 29-May-15 10:20am

I cannot promise you anything. You are way to rude and your last message is indecent.
—SA