How to append data to a binary file?

Question

I have a binary file to which I want to append a chunk of data at the end of the file, how can I achieve this using C# and .net? Also is there anything to consider when wri

Answer 1

Using StreamWriter and referencing DotNetPerls, make sure to add the True boolean to the StreamWriter constructor, if otherwise left blank, it'll overwrite as usual:

using System.IO;

class Program
{
    static void Main()
    {
    // 1: Write single line to new file
    using (StreamWriter writer = new StreamWriter("C:\\log.txt", true))
    {
        writer.WriteLine("Important data line 1");
    }
    // 2: Append line to the file
    using (StreamWriter writer = new StreamWriter("C:\\log.txt", true))
    {
        writer.WriteLine("Line 2");
    }
    }
}

Output
    (File "log.txt" contains these lines.)

Important data line 1
Line 2

This is the solution that I was actually looking for when I got here from Google, although it wasn't a binary file though, hope it helps someone else.