get error when use memory stream to read files

[farshadvl]

hi I use acadsharp to read dwg files and do some process like dxf files on it. my code: using (MemoryStream ms = new MemoryStream()) { using (DxfWriter writer = new DxfWriter(ms, doc, false)) { writer.OnNotification += onNotification; writer.Write(); } }

it get error : Cannot access a closed Stream.

what should I do?

[Revan1985]

Hi @farshadvl are you sure you want to read a file? Class DxfWriter is used to write, you should use class DxfReader.

[DomCR]

Hi @farshadvl,

As @Revan1985 pointed out your piece of code seems to be incomplete for us to help, but for what you are saying you are trying to read information from a closed Stream, if that's the case try to create a copy of the same stream:

    using (MemoryStream ms = new MemoryStream())
    {
        CadDocument doc = new CadDocument();

        using (DxfWriter writer = new DxfWriter(ms, doc, false))
        {
            writer.CloseStream = false;
            writer.Write();
        }

        MemoryStream s = new MemoryStream(ms.ToArray());

        using(DxfReader reader = new DxfReader(s))
        {
            CadDocument output = reader.Read();
        }
    }

I'm not sure if this is what you are trying to achieve, let me know if this helps.

[DomCR]

I've also noticed that the writer closes the stream even if the CloseStream flag is set to false, I'll open a branch to fix it, in the mean time the code that I've provided should help.