How to write contents of one file to another file?

Question

I need to write contents of a file to another file using File.OpenRead and File.OpenWrite methods. I am unable to figure out how to do it.

How can i modify the follo

Answer 1

If you are not keen at using Read/Write function of File , you can better try using Copy functionality

Easiest will be : 

      File.Copy(source_file_name, destination_file_name, true)

true--> for overwriting existing file,without "true" it will create a new file.But if the file already exists it will throw exception without "true" argument.

Answer 2

    using (FileStream stream = File.OpenRead("C:\\file1.txt"))
    using (FileStream writeStream = File.OpenWrite("D:\\file2.txt"))
    {
        BinaryReader reader = new BinaryReader(stream);
        BinaryWriter writer = new BinaryWriter(writeStream);

        // create a buffer to hold the bytes 
        byte[] buffer = new Byte[1024];
        int bytesRead;

        // while the read method returns bytes
        // keep writing them to the output stream
        while ((bytesRead =
                stream.Read(buffer, 0, 1024)) > 0)
        {
            writeStream.Write(buffer, 0, bytesRead);
        }
    }

Just wonder why not to use this:

File.Copy("C:\\file1.txt", "D:\\file2.txt");