Reading DWGPROPS from C#

[John Allan]

Hello,

I am trying to access the DWG properties from within ACAD, there's lots of resources on how to write custom ones but I cannot seem to simply read them.
The code below dosen't show any errors and fails to read anything resulting in empty strings.
Also I would like to eventually read the properties without opening the file, for example:

http://through-the-interface.typepad...ing-dwg-f.html

Database db = HostApplicationServices.WorkingDatabase;
Editor ed = MgdAcApplication.DocumentManager.MdiActiveDocument.Editor;
DatabaseSummaryInfoBuilder infobuilder = newDatabaseSummaryInfoBuilder();
DatabaseSummaryInfo info = newDatabaseSummaryInfo();
info = db.SummaryInfo;
try
{
using (Transaction tr = db.TransactionManager.StartTransaction())
{
Debug.WriteLine("METADATA ran.");
ed.WriteMessage("METADATA ran.\n");
string Author = info.Author;
ed.WriteMessage("Author is ", Author);
Author = infobuilder.Author;
ed.WriteMessage("Author is ", Author);
tr.Commit();
}
}
catch (System.Exception ex)
{
Debug.WriteLine(ex.ToString());
ed.WriteMessage(ex.ToString());
}
}
}
}

[BlackBox]

I am trying to access the DWG properties from within ACAD, there's lots of resources on how to write custom ones but I cannot seem to simply read them.

Give this a try:

        void _ReadSummaryInfo(Document doc)
        {
            Database db = doc.Database;
            Editor ed = doc.Editor;

            DatabaseSummaryInfo info = db.SummaryInfo;

            ed.WriteMessage("\nTitle: {0}", info.Title);
            ed.WriteMessage("\nSubject: {0}", info.Subject);
            ed.WriteMessage("\nAuthor: {0}", info.Author);
            ed.WriteMessage("\nKeywords: {0}", info.Keywords);
            ed.WriteMessage("\nComments: {0}", info.Comments);
            ed.WriteMessage("\nHyperlinkBase: {0} \n", info.HyperlinkBase);
        }

[John Allan]

That worked great, bit embarasing with the simple C# mistake there.
Thank you for your help... here is the code am using to grab data from other drawings that might be useful for somone else.

            string FilePath = "d:\\drawing1.dwg";
            Database db = new Database(false, true);

            using (db)
            {
                try
                {
                    db.ReadDwgFile(FilePath, System.IO.FileShare.Read, false, "");
                }
                catch (System.Exception)
                {
                    ed.WriteMessage("\nUnable to read drawing file.");
                    return;
                }
                Transaction tr = db.TransactionManager.StartTransaction();
                using (tr)
                {

                    DatabaseSummaryInfo info = db.SummaryInfo;
                    ed.WriteMessage("\nTitle: {0}", info.Title);
                    ed.WriteMessage("\nSubject: {0}", info.Subject);
                    ed.WriteMessage("\nAuthor: {0}", info.Author);
                    ed.WriteMessage("\nKeywords: {0}", info.Keywords);
                    ed.WriteMessage("\nComments: {0}", info.Comments);
                    ed.WriteMessage("\nHyperlinkBase: {0} \n", info.HyperlinkBase);
                }
            }

Partly taken from here

[BlackBox]

Thank you for your help...

You're welcome; I'm happy to help.

Cheers