public override long Seek(long offset, SeekOrigin origin)
{
switch (origin)
{
case SeekOrigin.Begin:
this.Position = offset;
break;
case SeekOrigin.Current:
this.Position += offset;
break;
case SeekOrigin.End:
this.Position = this.Length + offset;
break;
default:
throw new ArgumentException("Unexpected value of " + origin.GetType().Name + ".", "origin");
}
return(this.Position);
}
/// <summary>
/// Sets the position within the current stream.
/// </summary>
/// <returns>
/// The new position within the current stream.
/// </returns>
/// <param name="offset">A byte offset relative to the <paramref name="origin"/> parameter. </param>
/// <param name="origin">A value of type <see cref="T:System.IO.SeekOrigin"/> indicating the reference point used to obtain the new position. </param>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support seeking, such as if the stream is constructed from a pipe or console output. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override long Seek(long offset, SeekOrigin origin)
{
if (isDisposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
switch (origin)
{
case SeekOrigin.Begin:
if (offset < 0 || offset >= trackDataLength)
{
throw new EndOfStreamException();
}
trackDataPosition = (int)offset;
break;
case SeekOrigin.Current:
var newPosition = trackDataPosition + offset;
if (newPosition < 0 || newPosition >= trackDataLength)
{
throw new EndOfStreamException();
}
trackDataPosition = (int)newPosition;
break;
case SeekOrigin.End:
newPosition = trackDataLength + offset;
if (newPosition < 0 || newPosition >= trackDataLength)
{
throw new EndOfStreamException();
}
trackDataPosition = (int)newPosition;
break;
default:
throw new InvalidEnumArgumentException("origin", (int)origin, origin.GetType());
}
return(trackDataPosition);
}
/// <summary>
/// Sets the position within the current stream.
/// </summary>
/// <returns>
/// The new position within the current stream.
/// </returns>
/// <param name="offset">A byte offset relative to the <paramref name="origin"/> parameter. </param>
/// <param name="origin">A value of type <see cref="T:System.IO.SeekOrigin"/> indicating the reference point used to obtain the new position. </param>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support seeking, such as if the stream is constructed from a pipe or console output. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override long Seek(long offset, SeekOrigin origin)
{
if (isDisposed) throw new ObjectDisposedException(GetType().FullName);
switch (origin)
{
case SeekOrigin.Begin:
if (offset < 0 || offset>= trackDataLength) throw new EndOfStreamException();
trackDataPosition = (int) offset;
break;
case SeekOrigin.Current:
var newPosition = trackDataPosition + offset;
if (newPosition < 0 || newPosition >= trackDataLength) throw new EndOfStreamException();
trackDataPosition = (int) newPosition;
break;
case SeekOrigin.End:
newPosition = trackDataLength + offset;
if (newPosition < 0 || newPosition >= trackDataLength) throw new EndOfStreamException();
trackDataPosition = (int) newPosition;
break;
default:
throw new InvalidEnumArgumentException("origin", (int) origin, origin.GetType());
}
return trackDataPosition;
}
public override long Seek(long offset, SeekOrigin origin)
{
switch (origin)
{
case SeekOrigin.Begin:
this.Position = offset;
break;
case SeekOrigin.Current:
this.Position += offset;
break;
case SeekOrigin.End:
this.Position = this.Length + offset;
break;
default:
throw new ArgumentException("Unexpected value of "+origin.GetType().Name+".", "origin");
}
return this.Position;
}
