Writing to text file

[Freddo]

Thanks to NT Josh for the reference examples on reading and writiing text files.

http://www.ninjatrader-support2.com/vb/showthread.php?t=3477

Whats the difference between calling file IO and using a stream please?

[NinjaTrader_Bertrand]

Freddo, the difference is performance (steam reader / writer) vs. ease of use (System.IO File)

[Freddo]

I have a data base that analyses data using stored procedures.
It would take me waaay too long to write the logic as Ninja Script.
I can load the initial data via export from NT but I would like to
write to a text file on a 1 minute chart then as a back ground process I will have a scheduled job in my database which will read that file
and analyse it on 1min, 3min, 5min, 15min and 1hour basis
it will then alert me if anything interesting is developing.

I will conduct my own tests but do you think System.FileIO will perform okay doing small frequent writes?

[NinjaTrader_Bertrand]

Freddo, as you noted you would need to test in your individual scenario, but for small read / write operations the System.IO File should do it.

[Freddo]

Thanks Bertrand
Regards
Freddo

[Freddo]

I have Josh's example of sing File IO on a 1 minute chart.
Loading the indicator writes a file of the bars on the chartbut the file is not getting updated as the chart updates

[NinjaTrader_Bertrand]

Freddo, not sure what you mean, the sample exports the history to a text file and the adds in realtime to it...as result it displays the current days OHLC to the output window.

The file created sits in the MyDocuments\NinjaTrader 6.5 folder and is named 'SampleFileReadWrite-MyTestFile' per default.

[Freddo]

Hi Bertrand,
it exports the historical then starts updating and stops.
I do not see the days OHLC.

I am wondering if when the indicator script is trying to update the text file
and my program is reading the same file then my data base loader utility is reading it.

Regards
Freddo

[NinjaTrader_JoshP]

Freddo,

Please check your Control Center logs for errors. You likely cannot read and write at the same time.