index

public override void SetLength(long value) { throw new NotSupportedException("SetLength is not supported"); }

    public unsafe override void Write(byte[] buffer, int offset, int count)
    {
        if (!m_IsWritable)
        {
            throw new NotSupportedException("Stream is not writable");
        }

        if (offset != 0)
        {
            throw new NotSupportedException("Offset is not supported");
        }

        int bytesWritten;

        var address = new IntPtr(&bytesWritten);

        m_ComStream.Write(buffer, count, address);
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (m_ComStream != null)
            {
                Marshal.ReleaseComObject(m_ComStream);
            }
        }

        base.Dispose(disposing);
    }
}

}

```csharp
public override void SetLength(long value)
{
    m_ComStream.SetSize(value);
}

public override void Write(byte[] buffer, int offset, int count)
{
    if (offset != 0)
    {
        throw new NotSupportedException("不支持偏移量");
    }

    m_ComStream.Write(buffer, count, IntPtr.Zero);
}

protected override void Dispose(bool disposing)
{
    try
    {
        if (disposing)
        {
            m_IsWritable = false;
        }
    }
    finally
    {
        base.Dispose(disposing);
    }
}

~ComStream()
{
    Dispose(false);
}
}
```