NT8 streamwriter replace - add

[tonynt]

Hello,

I´m working from the sample streamwriter and I could add it to my indicator. But it always replaces current values in the file. What do I have to add so that new values are added in the next line of the file? Can you please help me with a snippet.

Thank you!
Tony

[NinjaTrader_Jesse]

Hello tonynt,

The StreamWriter is a standard C# object which has quite a few properties and methods, this is documented at MSDN:

https://docs.microsoft.com/en-us/dotnet/api/system.io.streamwriter?view=netframework-4.5

This can be combined with the File object and its AppendText method:

https://docs.microsoft.com/en-us/dotnet/api/system.io.file.appendtext?view=netframework-4.5

The second link contains a sample of appending text to a file.


I look forward to being of further assistance.

[tonynt]

Hello,

thank you for providing the link. When I modify my code (that is working) then I get an error-message when compiling

"No overload for AppendText, takes 2 arguments" (translation by me!)

(StreamWriter outputFile = File.AppendText(docPathC + @"" + dnFile,false))
outputFile.WriteLine(string.Format("{0},{1},{2},{3 },{4},{5},{6},{7}",dn1xA,dn1xB,dn1xC,dn1xD,0,0,0,0 ));}

Do you see whats wrong here please?

Thank you!
Tony

[NinjaTrader_Jesse]

Hello tonynt,

I see you have used two parameters for AppendText but it only takes one, this would be the comma false or:

File.AppendText(docPathC + @"" + dnFile[B],false[/B])

It should just be the file path

File.AppendText(docPathC + @"" + dnFile )

I look forward to being of further assistance.

[tonynt]

Thank you

[tonynt]

Hello Jesse,

all is working fine with this help. But I have - always - problems with time, date.... What do I have to add please to my line posted here above to have dayofweek, date and time instead the "0" there.

Thank you!
Tony

[NinjaTrader_Jesse]

Hello tonynt,

I am not certain which syntax you are referring to here, did you mean to include some additional syntax? If you are referring to formatting a DateTime, you can see the following public link for some examples for formatting time: http://www.csharp-examples.net/string-format-datetime/

I look forward to being of further assistance.

[tonynt]

Hello Jesse,

thank you for your reply. This time and date syntax makes me crazy. I mean to have here
outputFile.WriteLine(string.Format("{0},{1},{2},{3 },{4},{5},{6},{7}",dn1xA,dn1xB,dn1xC,dn1xD,Date, DayOfWeek, Time));}

Thank you!
Tony

[NinjaTrader_Jesse]

Hello tonynt,

If you are trying to print the Time, you would need to specify what BarsAgo you wanted. Time is the series, you still need to add a BarsAgo here:

Time[0]

Date and DayOfWeek seem to be some variables you have made. If those are 0 you would need to look at your logic to see why that is the case. DayOfWeek specifically is a NinjaScript enum as well, if you have made a variable named DayOfWeek I would suggest using a different name, if you are trying to print specifically DayOfWeek or Date from the Time, you need to not use the enum because that is not a value. You can access the Date or DayOfWeek from the time object:

Time[0].Date
Time[0].DayOfWeek

The Time object is a Series of DateTimes, so you can access any DateTime property from a specific time like shown above.



Please let me know if I may be of additional assistance.

[tonynt]

Why appears there " Unlike" when I click on "like" ???

[NinjaTrader_Jesse]

Hello tonynt,

That just is to give confirmation you liked the post, you can also unlike a post if you feel later you stopped liking it.

Please let me know if I may be of further assistance.

[tonynt]

Hello,

now its clear once the post sent as I recognize now. But when you click it then there appears "Unlike" "1" side by side! This means? "Unlike 1" after clicking.

Best regards
Tony