Read unopened dwg file give fileaccesserr

[stefanveurink68AXD]

Sorry for asking this, I'm sure i'm doing something stupid, but can't get it to work and can't find the answer. Tried several combinations, all give me a efileaccesserr when trying to read unopened dwg-file. 

for example by: 

Database db = new Database(false, true);
using (db)
{db.ReadDwgFile(path, FileOpenMode.OpenForReadAndAllShare, true, "");

or even with: 

DocumentCollection acDocMgr=Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager;
Document acNewDoc = acDocMgr.Add(path);

it immediatly gives me the error. it's the first lines in my code. 

the "path"variable contains the path, as you might have expected. 

[stefanveurink68AXD]

By the way, should have mentioned I'm trying to read an dwg file that's not opened in autocad. I need to find out which layouts are in it. But to know that I first have to access it. 

Tried to docklock it but then I first need to call it a document, what i'm trying to do with the second piece of code. But don't even get the chance to call it a document cause even there I get the eFileAccesErr. If the dwg file would be open doclock it would be easy, there's no trouble with that.  

[_gile · Accepted solution]

Hi,

There's nothing wrong in the little snippet you posted. The issue is elsewhere, perhaps in the file itself or its path.

You can try with someting like this:

        [CommandMethod("TEST")]
        public static void Test()
        {
            var ofd = new OpenFileDialog() { 
                Filter = "Drawings (*.dwg)|*.dwg", 
                Title = "File to get layouts from" };
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                var layoutNames = new List<string>();
                using (var db = new Database(false, true))
                {
                    db.ReadDwgFile(ofd.FileName, FileOpenMode.OpenForReadAndAllShare, true, "");
                    using (var tr = db.TransactionManager.StartOpenCloseTransaction())
                    {
                        var layouts = (DBDictionary)tr.GetObject(db.LayoutDictionaryId, OpenMode.ForRead);
                        foreach (DBDictionaryEntry entry in layouts)
                        {
                            layoutNames.Add(entry.Key);
                        }
                        tr.Commit();
                    }
                }
                AcAp.ShowAlertDialog(string.Join("\n", layoutNames));
            }
        }