Al: Create file using Outstream and Instream

[hydhart]

Hi,

how do i create file in extension, without changing target in app.json (because Extension cannot use FILE datatype) ? In some thread i have read that i need to use Outstream and InStream, but any example using outstream to create text file?

in issue #934 is an example of picture.

Thanks

[dNsl9r]

See this example: https://docs.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/api/xmldocument-writeto-outstream-method

[ftornero9]

This is an example that create a text file with 3 lines.

codeunit 50102 CreateFiles
{
trigger OnRun()
begin

end;

procedure CreateTxtFile(FileName: Text)
var

    InStr: InStream;
    OutStr: OutStream;
    tmpBlob: Record TempBlob temporary;
    CR: char;
    LF: char;

begin
    CR := 13;
    LF := 10;
    tmpBlob.Blob.CreateOutStream(OutStr);        
    OutStr.WriteText('First line'+ CR + LF);
    OutStr.WriteText('Second line'+ CR + LF);
    OutStr.WriteText('Third line'+ CR + LF);        
    tmpBlob.Blob.CreateInStream(InStr);
    DownloadFromStream(InStr, '', '', '', FileName); 
end;

}

[hydhart]

thanks @ftornero9 , your code works well.

first i'm curious what for CR and LF, but looks like it is necessary for line breaking.

https://dynamicsuser.net/nav/f/developers/8258/carriage-return-crlf-into-a-text-variable

[hydhart]

anyone asked before how to silently download file to specific folder using code @ftornero9 given?

in https://forum.mibuso.com/discussion/69837/downloadfromstream-function-question
we can use method BLOBExportToServerFile from codeunit 419, but in extension we couldn't use the method.
is there any other way?

[dNsl9r]

@hydhart not at the moment.