CoreMisc.h

All the functionality you want is in CoreMisc.h

 /**
      * Write the FString to a file.
      * Supports all combination of ANSI/Unicode files and platforms.
      */
     static bool SaveStringToFile( const FString& String, const TCHAR* Filename, EEncodingOptions::Type EncodingOptions=EEncodingOptions::AutoDetect, IFileManager* FileManager=&IFileManager::Get() );
 
 
 /**
      * Load a text file to an FString.
      * Supports all combination of ANSI/Unicode files and platforms.
      * @param Result string representation of the loaded file
      * @param Filename name of the file to load
      * @param VerifyFlags flags controlling the hash verification behavior ( see EHashOptions )
      */
     static bool LoadFileToString( FString& Result, const TCHAR* Filename, uint32 VerifyFlags=0 );
 
 
 
 /**
      *    Load the given ANSI text file to an array of strings - one FString per line of the file.
      *    Intended for use in simple text parsing actions
      *
      *    @param    InFilename            The text file to read, full path
      *    @param    InFileManager        The filemanager to use - NULL will use &IFileManager::Get()
      *    @param    OutStrings            The array of FStrings to fill in
      *
      *    @return    bool                true if successful, false if not
      */
     static bool LoadANSITextFileToStrings(const TCHAR* InFilename, IFileManager* InFileManager, TArray<FString>& OutStrings);

Sample Usage:

You call the functions statically

 FFileHelper::SaveStringToFile(...);
 
 FFileHelper::LoadANSITextFileToStrings(...);

CPP Source Code For You

I use the above functions in my Victory BP Library plugin, whose entire source code is available with the download (no cost)

https://forums.unrealengine.com/showthread.php?3851-(39)-Rama-s-Extra-Blueprint-Nodes-for-You-as-a-Plugin-No-C-Required!

Enjoy!

Rama

Just want to add that the WriteFlags refered from FFileHelper::SaveStringToFile can be found(i think/hope) in FileManager.h :

 enum EFileWrite
 {
     FILEWRITE_NoFail            = 0x01,
     FILEWRITE_NoReplaceExisting = 0x02,
     FILEWRITE_EvenIfReadOnly    = 0x04,
     FILEWRITE_Append            = 0x08,
     FILEWRITE_AllowRead            = 0x10
 };

The default behaviour is rewrite the file with the Fstring. If you want to add Fstring to the same file you will make a call with 0x08 inside the flags. Remember that the new line is LINE_TERMINATOR and you should be ready to go! Hope can be useful, being almost a total newbie to Unreal c++ this could saved me some time :)

Hi !

I trying to write it to the text file from UE4 version 4.11. Does this method still work on it ? If yes , how ?

Thank!

Yes it still work