Convert base64Binary to pdf

Question

I have base64Binary source data.

string base64BinaryStr = "J9JbWFnZ......" 

How can I make a pdf file? I know that this requires some conversion. Please help me.

Answer 1

Step 1 converts your base64 string to an array of bytes:

 byte[] bytes = Convert.FromBase64String(base64BinaryStr); 

Step 2 saves an array of bytes to disk:

 System.IO.FileStream stream = new FileStream(@"C:\file.pdf", FileMode.CreateNew); System.IO.BinaryWriter writer = new BinaryWriter(stream); writer.Write(bytes, 0, bytes.Length); writer.Close(); 

Answer 2

 using (FileStream stream = System.IO.File.Create("c:\\file.pdf")) { byte[] byteArray = Convert.FromBase64String(base64BinaryStr); stream.Write(byteArray, 0, byteArray.Length); } 

Answer 3

base64BinaryStr - from SOAP web service message

 byte[] bytes = Convert.FromBase64String(base64BinaryStr); 

Answer 4

All you have to do is run it through any Base64 decoder that will receive your data as a string and pass an array of bytes. Then just write this file with pdf in the file name. Or, if you pass this back to the browser, just write the bytes to the output stream, noting the corresponding mime type in the headers.

Most languages ​​have either built methods for converting to / from Base64. Or a simple Google with your specific language will return numerous implementations that you can use. The process of moving back and forth in Base64 is quite simple and can be implemented even by novice developers.

Answer 5

This code does not write files to the hard drive.

 Response.AddHeader("Content-Type", "application/pdf"); Response.AddHeader("Content-Length", base64Result.Length.ToString()); Response.AddHeader("Content-Disposition", "inline;"); Response.AddHeader("Cache-Control", "private, max-age=0, must-revalidate"); Response.AddHeader("Pragma", "public"); Response.BinaryWrite(Convert.FromBase64String(base64Result)); 

Note: the base64Result variable contains base64Result Base64: "JVBERi0xLjMgCiXi48 / TIAoxI ..."

Answer 6

First, convert the Bas64 string to byte [] and write it to a file.

 byte[] bytes = Convert.FromBase64String(base64BinaryStr); File.WriteAllBytes(@"FolderPath\pdfFileName.pdf", bytes );