Is there any way to get first line (header) and last line of blg file similar like csv file

Question

I am able to get first line (header) and last line of CSV file using below code,

string lines = File.ReadAllLines(@"C:\Files\test.csv");
string firstLine = lines.First();
string lastLine = lines.Last();
string result = firstLine + "\r\n" + lastLine;
File.WriteAlltext(@"C:\Files\test_Copy.csv", result);

Now I have a same requirement for performance counter (blg) file, but looks like File Readline is not working for blg file.

string line1 = File.ReadLines(@"C:\Files\BasicPerfCounters.blg").First();

The above code for reading first line of blg won't throw any exception, but output is not plain text,

Whereas, the first line read of csv output is plain text,

Note - One thing I can do that I can convert blg file to csv file using Relog.exe (https://blogs.technet.microsoft.com/askperf/2008/05/20/two-minute-drill-relog-exe/) and then I can easily read first line (header).

Is there any way to get first line (header) of blg file without convert it to csv?

Here is sample blg file, https://github.com/Microsoft/Tx/blob/master/Traces/BasicPerfCounters.blg

ReadAllLines will save all lines and you only need two. ReadLine and only save first and last would be more efficient. — paparazzo, Jan 21 '18 at 13:51
"it does not work" won't help anybody. What is the behavior you're seeing? Does it throw an exception? Does it return a single line? Nothing? — Kevin Gosse, Jan 21 '18 at 13:57
@Kevin, I updated the output for both `blg` and `csv` first line output. — user584018, Jan 21 '18 at 14:31
Possible duplicate of [Is there any C# framework or code to parse \*blg Perfomance Counter log files?](https://stackoverflow.com/questions/4396471/is-there-any-c-sharp-framework-or-code-to-parse-blg-perfomance-counter-log-file) — paparazzo, Jan 21 '18 at 14:33
@Paparazzi, I know I can convert `blg` to `csv` and then proceed. Is there any way without converting? — user584018, Jan 21 '18 at 14:36
I can read what you are asking and in my mind it is a duplicate. If I had an answer then I would answer the duplicate. — paparazzo, Jan 21 '18 at 14:51

Is there any way to get first line (header) and last line of blg file similar like csv file

0 Answers0