.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Example

using System;
using System.IO;
using System.Text;

namespace Samples
{
  public class SeekOriginSample
  {
    public static void Main()
    {
      string s = "filestream.txt";
      FileStream fs = new FileStream(s,
                                     FileMode.OpenOrCreate,
                                     FileAccess.Write);
      fs.Seek(0, SeekOrigin.Begin);
      Console.WriteLine("Position: {0}",
                        fs.Position);
      fs.Seek(1, SeekOrigin.Current);
      Console.WriteLine("Position: {0}",
                        fs.Position);
      fs.Seek(0, SeekOrigin.End);
      Console.WriteLine("Position: {0}",
                        fs.Position);
      fs.Seek(-1, SeekOrigin.End);
      Console.WriteLine("Position: {0}",
                        fs.Position);
      fs.Close();
    }
  }
}

The output is:

Position: 0
Position: 1
Position: 35
Position: 34