FileStream that not consuming too much memory to read/write.

LazyFileStream.cs

/// <summary>
/// FileStream that not consuming too much memory to read/write.
/// </summary>
public class LazyFileStream :
    FileStream, IDisposable
{
    public LazyFileStream(string path, FileMode mode = FileMode.OpenOrCreate, FileAccess access = FileAccess.ReadWrite, FileShare share = FileShare.ReadWrite, int buffer = 4096, FileOptions options = FileOptions.SequentialScan | FileOptions.Asynchronous) : base(path, mode, access, share, buffer, options)
    { }

    public void Write(byte[] data, int offset = 0)
    {
        Write(data, offset, data.Length);
    }
    public byte[] Read(Range range) => Read(range.End.Value - range.Start.Value, range.Start.Value);
    public byte[] Read(int length, int offset = -1)
    {
        var buffer = new byte[length];
        if(offset >= 0) Position = offset;
        Read(buffer, 0, buffer.Length);
        return buffer;
    }
    /// <summary>
    /// Dispose this instance and write all changes
    /// </summary>
    public new void Dispose() => base.Dispose();
}