File.AppendAllLines

method · File · cAlgo.API Since 5.7

DesktopCLICloud

Appends lines to file.

Environment behaviour

Cloud — not supported. Exists returns false; reads return empty string/array; writes and appends silently do nothing. No exception.

Overloads

Signature	Description
`AppendAllLines(string[] contents)`	Appends lines to file.
`AppendAllLines(string[] contents, EncodingType encodingType)`	Appends lines to file that has a specified encoding.

AppendAllLines(string[] contents)

Appends lines to file.

C#Python

void AppendAllLines(string[] contents)

file.AppendAllLines(contents: list[str]) -> None

Parameters

Name	C# type	Python type	Description
`contents`	`string[]`	`list[str]`	The string lines to append to the file.

Examples

C#Pythonconfig.json

protected override void OnStart()
{
    var lines = Positions.Select(position => $"{position.SymbolName},{position.TradeType},{position.NetProfit}").ToArray();
    DataFile.AppendAllLines(lines);
}

from System import Array, String

lines = [f"{position.SymbolName},{position.TradeType},{position.NetProfit}" for position in api.Positions]
api.DataFile.AppendAllLines(Array[String](lines))

{
  "Parameters": [
    {
      "Name": "DataFile",
      "DisplayName": "Data File",
      "Type": "File"
    }
  ]
}

AppendAllLines(string[] contents, EncodingType encodingType)

Appends lines to file that has a specified encoding.

C#Python

void AppendAllLines(string[] contents, EncodingType encodingType)

file.AppendAllLines(contents: list[str], encodingType: EncodingType) -> None

Parameters

Name	C# type	Python type	Description
`contents`	`string[]`	`list[str]`	The string lines to append to the file.
`encodingType`	`EncodingType`	`EncodingType`	Encoding type

Examples

C#Pythonconfig.json

protected override void OnStart()
{
    DataFile.AppendAllLines(new[] { SymbolName, Symbol.Bid.ToString() }, EncodingType.Utf32);
}

from System import Array, String

api.DataFile.AppendAllLines(Array[String]([api.SymbolName, str(api.Symbol.Bid)]), EncodingType.Utf32)

{
  "Parameters": [
    {
      "Name": "DataFile",
      "DisplayName": "Data File",
      "Type": "File"
    }
  ]
}