VB - How do I read and write a binary file?
-
11-09-2019 - |
Question
How do I read a raw byte array from any file...
Dim bytes() as Byte
..and then write that byte array back into a new file?
I need it as a byte array to do some processing in between.
I'm currently using:
To read
Dim fInfo As New FileInfo(dataPath)
Dim numBytes As Long = fInfo.Length
Dim fsAs New FileStream(dataPath, FileMode.Open, FileAccess.Read)
Dim br As New BinaryReader(fs)
Dim bytes As Byte() = br.ReadBytes(CInt(numBytes))
br.Close()
fs.Close()
To write
Dim fs As System.IO.FileStream
fs = New System.IO.FileStream(outpath, System.IO.FileMode.Create)
fs.Write(bytes, 0, bytes.Length)
fs.Close()
Solution
Dim data() as Byte = File.ReadAllBytes(path1)
File.WriteAllBytes(path2, data)
OTHER TIPS
System.IO.File.ReadAllBytes("myfile.txt")
Try this:-
Dim bytes() as Byte
bytes = File.ReadAllBytes(fileName)
'' # Do stuff to the array
File.WriteAllBytes(otherFileName, bytes)
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow