Buffer BlockCopy in C#

It copies the bytes from one byte array to another byte array.

Example

 Live Demo

using System;
class Demo {
   static void Main() {
      // byte arrays
      byte[] b1 = new byte[] {55, 66, 77, 88, 99};
      byte[] b2 = new byte[8];
      // copying bytes from one to another
      Buffer.BlockCopy(b1, 0, b2, 0, 5);
      /* calling the method with the byte array b2 that has the copied elements */
      bufferFunc(b2);
   }
   static void bufferFunc(byte[] a) {
      for (int j = 0; j < a.Length; j++) {
         Console.Write(a[j]);
      }
      Console.WriteLine();
   }
}

Output

5566778899000