Writing information to a file

[KBJ]

this code

string file = "C:\Users\Scott\Documents\NinjaTrader 7\incoming\oif.txt";

gets error 'unrecognized escape sequence'

Try using a single quote instead, or a double backslash. For instance,

string file = 'C:\Users\Scott\Documents\NinjaTrader 7\incoming\oif.txt';

-- or --

string file = "C:\\Users\\Scott\\Documents\\NinjaTrader 7\\incoming\\oif.txt";

[ATI user]

thanks KBJ

[ATI user]

KBJ

please see this thread and let me know if you have had the same problem wherein oif.txt only executes once after NT restart

thanks

http://www.ninjatrader-support2.com/vb/showthread.php?t=23712

[KBJ]

KBJ

please see this thread and let me know if you have had the same problem wherein oif.txt only executes once after NT restart

thanks

http://www.ninjatrader-support2.com/...ad.php?t=23712

ATI User: I looked at the thread. However, this is an area that I don't know much about, as I've never tried using an OIF/Order-Instruction-File.

Good luck.

[Mindset]

oif file

ATIuser - I assume you solved your once only error?
I declare a variable like so
string incomingpath = Cbi.Core.UserDataDir.ToString() + "\\incoming\\oif"

It works for me in Vista - the double slashes are important.

Could I add a suggestion / ask for a hint... I would like to place a stop with a negative limit order . I can do this by manipulating chart trader but is there a hint as to how to do it programmatically?
Obviously it's a synthetic order but is it possible and if it isn't can I ask for it to be added?

[ATI user]

Mindset

yes...sorry...thought I had posted a final solution to once only issue:

you must not have the 'Ignore duplicate OIF files' checked at Tools/Options/ATI...see pic

I originally thought this option was to avoid race conditions...i.e. executing more than once per instance. In fact it stops duplicate files (same name) for the entire session

re code: as mentioned this code works fine for me..in Vista...did not need double slashes

string file = NinjaTrader.Cbi.Core.UserDataDir + @"\incoming\"+ fileName;

re negative order, if asking me, I would try to place via AtmStrategyCreate code...have not tested this though

[J_o_s]

How can I write a file to the following location?

I:\Backtests\november-2010\SampleStrategyForTesting\MSFT_15-11-10[17:27].txt

I’ve tried to format this in a string in the following way:

  string currentTime = DateTime.Now.ToString("dd-MM-yy[HH:mm]");
  string fileLocation = string.Format(@"I:\Backtests\{0}\{1}\{2}_{3}.txt",
                  DateTime.Now.ToString("MMMM-yy"), 
  Name.ToString(), 
  Instrument.FullName.ToString(),
   currentTime);

However, when I try to write to this file location using SteamWriter, I get the following error:
“The given path directories aren’t supported” (translated from Dutch)

However, I can create these directories through the use of “System.IO.Directory.CreateDirectory()”. Besides that, when I write to a file location which is hardcoded in the strategy, the file does gets written. But that won’t be feasible with backtests on multiple instruments.

So, I can create the directory in NinjaScript, however when I try to write a .txt file (to the same directory) I get an error saying that the directories aren’t supported. Anyone with a suggestion?

Regards,

[Mindset]

jos

have you tried \\ ie double backslashes or @?

[NinjaTrader_JoshP]

J_o_s,

Your file string output is this with your current code:

I:\Backtests\November-10\SampleStrategyForTesting\ES 12-10_15-11-10[09:41].txt

Highlighted in red is the difference area between what you wanted and what you have.

[J_o_s]

have you tried \\ ie double backslashes or @?

Thanks for your comment Mindset. Yes, I’ve tried that to no avail. (Thanks for your comment though )

J_o_s,
Your file string output is this with your current code:
I:\Backtests\November-10\SampleStrategyForTesting\ES 12-10_15-11-10[09:41].txt
Highlighted in red is the difference area between what you wanted and what you have.

Thanks Josh, you’re right, I’ve copied & pasted the wrong line from the Output Window. However, that wasn’t related to the error of the strategy, just my wrong copy & paste.

Because the comments of you both pointed to the basics, I’ve started this morning from scratch, and uncovered the part which made the error:

  // The statement below returns the error
  string currentTime = DateTime.Now.ToString("dd-MM-yy[HH:mm]");
  // Removing the “:” in the string does make it work
  string currentTime = DateTime.Now.ToString("dd-MM-yy[HHmm]");

Woops, not that smart because a “:” isn’t an allowed character (see also http://msdn.microsoft.com/en-us/libr...8VS.85%29.aspx ). So all in all it was a little mistake which rendered the (abstractly formulated) error.

For what’s it’s worth, this is the C# code at the moment:

  private System.IO.StreamWriter sw;
          public void WriteStrategyToFile()
          {
              // Generate the string with the date and time
              string currentTime = DateTime.Now.ToString("dd-MM-yy[HHmm]");
              
              // Generate the target directory path
              string filePath = string.Format(@"C:\Temp\{0}\{1}\",
                  DateTime.Now.ToString("MMMM-yy"), Name.ToString());
   
              // Generate the file name
              string fileName = string.Format("{0}_{1}.txt", Instrument.FullName.ToString(), currentTime);
   
              // Combine both strings in the complete path
              string fileLocation = System.IO.Path.Combine(filePath, fileName);
   
              Print("Current file location: " + fileLocation);
   
              // Make the directory if it's not yet existing
              if (!System.IO.Directory.Exists(filePath))
              {
                  System.IO.Directory.CreateDirectory(filePath);
              }
   
              // Start writing to file
              try
              {
                  sw = System.IO.File.AppendText(fileLocation);
   
                  sw.WriteLine("Current time is " + currentTime);
                  sw.WriteLine("StrategyName: " + Name);
              }
              // Catch the exceptions
              catch (Exception e)
              {
                  // Outputs the error to the log
                  Log("You cannot write and read from the same file at the same time. Please remove SampleStreamReader.", NinjaTrader.Cbi.LogLevel.Error);
                  throw;
              }
              
              // Close SteamWriter
              sw.Close();
          }

Regards,