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Jonathan Wolff 7Jonathan Wolff 7 

Rewrite ContentVersion class to create working pdf

Hello, I made Anonymous window in my dev console to test a apex class to create a text file and save it in files. It does work fine, but when I replace .txt with .pdf, the pdf is created but when I open it, I got an error (I use edge browser, maybe this is the problem)

Could you show me what to change about the code to create a working pdf :)
  
try{
  string textFile = 'This is test data';
  ContentVersion DocVer = New ContentVersion();
  docVer.ContentLocation = 'S';
  docVer.PathOnClient= 'Demo.txt';
  docver.Title= 'Demo.txt';
  Blob textData = Blob.valueOf(textFile);
  docver.VersionData = textData;
  insert DocVer;

  string Versid =[select contentDocumentid from contentVersion where id =: 
  DocVer.id].contentDocumentid;
  ContentDocumentLink Doclink = New ContentDocumentLink();
  doclink.ContentDocumentId =Versid;
  doclink.linkedEntityId = '';
  doclink.sharetype = 'I';
  doclink.visibility = 'AllUsers';
  insert doclink;

}
catch(exception ex)
{
      system.debug(ex.getmessage());
}