Converting file into Base64String and back again

Question

The title says it all    I read in a tar gz archive like so  break the file into an array of bytes Convert those bytes into a Base64 string Convert that Base64 string back into an array of bytes Write those bytes back into a new tar gz file   I can confirm that both files are the same size  the below method returns true  but I can no longer extract the copy version   Am I missing something   Boolean MyMethod        using  StreamReader sr   new StreamReader  C      file tar gz              String AsString   sr ReadToEnd            byte   AsBytes   new byte AsString Length           Buffer BlockCopy AsString ToCharArray    0  AsBytes  0  AsBytes Length           String AsBase64String   Convert ToBase64String AsBytes            byte   tempBytes   Convert FromBase64String AsBase64String           File WriteAllBytes   C      file copy tar gz   tempBytes             FileInfo orig   new FileInfo  C      file tar gz        FileInfo copy   new FileInfo  C      file copy tar gz           Confirm that both original and copy file have the same number of bytes     return  orig Length      copy Length       EDIT  The working example is much simpler  Thanks to  T S     Boolean MyMethod        byte   AsBytes   File ReadAllBytes   C      file tar gz        String AsBase64String   Convert ToBase64String AsBytes        byte   tempBytes   Convert FromBase64String AsBase64String       File WriteAllBytes   C      file copy tar gz   tempBytes        FileInfo orig   new FileInfo   C      file tar gz        FileInfo copy   new FileInfo   C      file copy tar gz           Confirm that both original and copy file have the same number of bytes     return  orig Length      copy Length       Thanks

User · Answer

For Java  consider using Apache Commons FileUtils         Convert a file to base64 string representation     public String fileToBase64 File file  throws IOException       final byte   bytes   FileUtils readFileToByteArray file       return Base64 getEncoder   encodeToString bytes             Convert base64 string representation to a file     public void base64ToFile String base64String  String filePath  throws IOException       byte   bytes   Base64 getDecoder   decode base64String       FileUtils writeByteArrayToFile new File filePath   bytes

User · Answer

Another working example in VB NET  Public Function base64Encode ByVal myDataToEncode As String  As String     Try         Dim myEncodeData byte As Byte     New Byte myDataToEncode Length - 1             myEncodeData byte   System Text Encoding UTF8 GetBytes myDataToEncode          Dim myEncodedData As String   Convert ToBase64String myEncodeData byte          Return myEncodedData     Catch ex As Exception         Throw  New Exception  quot Error in base64Encode quot   amp  ex Message       End Try       End Function

User · Answer

private String encodeFileToBase64Binary File file       String encodedfile   null    try         FileInputStream fileInputStreamReader   new FileInputStream file         byte   bytes   new byte  int file length         fileInputStreamReader read bytes         encodedfile   Base64 encodeBase64 bytes  toString        catch  FileNotFoundException e             TODO Auto-generated catch block       e printStackTrace        catch  IOException e             TODO Auto-generated catch block       e printStackTrace              return encodedfile

User · Answer

If you want for some reason to convert your file to base-64 string  Like if you want to pass it via internet  etc    you can do this   Byte   bytes   File ReadAllBytes  path    String file   Convert ToBase64String bytes     And correspondingly  read back to file   Byte   bytes   Convert FromBase64String b64Str   File WriteAllBytes path  bytes

[c#] Converting file into Base64String and back again

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