C# Append byte array to existing file
One way would be to create a FileStream with the FileMode.Append creation mode.
Opens the file if it exists and seeks to the end of the file, or creates a new file.
This would look something like:
public static void AppendAllBytes(string path, byte[] bytes){ //argument-checking here. using (var stream = new FileStream(path, FileMode.Append)) { stream.Write(bytes, 0, bytes.Length); }}
- Create a new
FileStream. Seek()to the end.Write()the bytes.Close()the stream.
You can also use the built-in FileSystem.WriteAllBytes Method (String, Byte[], Boolean).
public static void WriteAllBytes( string file, byte[] data, bool append)Set append to True to append to the file contents; False to overwrite the file contents. Default is False.