C#

static void Main(string[] args)
    {

const int iReadTotal=10;
const int iReadStart=10;

FileStream f = new FileStream ("C:\\test.vbs",System.IO.FileMode.Open, System.IO.FileAccess.Read);
f.Seek(iReadStart,System.IO.SeekOrigin.Current);
StreamReader st = new StreamReader(f);

char[] buffer=new char[iReadTotal];
st.ReadBlock(buffer,0,buffer.Length);

string s="";
for(int i=0;i<buffer.Length;i++)
  s+=buffer[i].ToString();

Console.WriteLine(s);
Console.Read();
    }