Using Streamwriter

[tonynt]

Hello,

from the sampleStreamWriter I understand what its doing and I could add it to a script. But it is always appending when writing.

I would need it eg simply to write a "1" when its long "2" when its short and a "0" when its flat, so only one value in the file without appending. I was on microsoft dot net api system io but I cant find this. Therefore thank you for helping me by giving me this snippet.

Thank you!
Tony

[NinjaTrader_ChrisL]

Hello tonynt, thanks for your post.

The StreamWriter has a constructor that takes a boolean, set that to false to overwrite your file.

https://docs.microsoft.com/en-us/dotnet/api/system.io.streamwriter.-ctor?view=netframework-4.8#System_IO_StreamWriter__ctor_System_String_System_Boolean_

This publicly available link also has a solution:

https://stackoverflow.com/questions/14071475/remove-all-previous-text-before-writing

Kind regards.

[tonynt]

Hello,

thank you for that link, this will help me.

One more question please: I remember I had issues in NT7 with StreamWriter and StreamReader because I got the message from the script using StreamReader because the file is used by another process (so from the other script that is writing).
Is there a solution for this problem please so that it can be write and read same time or any workaround?

Thank you!
Tony

[NinjaTrader_ChrisL]

Hi tonynt, thanks for the reply.

See this section of the help guide that demonstrates how to use a dispatcher to write to the file, see the example under "Access Violation Exception":

https://ninjatrader.com/support/helpGuides/nt8/en-us/?multi-threading.htm

Best wishes.