How to close a file in Autocad using C# keeping acad.exe running?

Question

I am using visual studio 2010 and I am having a .DWG file which I want to open in autocad. Till now I have used this.

Process p = new Process();
ProcessStart         


        

Answer 1

To perform the closing of file, best way out is to follow the steps at this ObjectARX SDK for c# and change the following code with the below code.

            [CommandMethod("CD", CommandFlags.Session)]
            static public void CloseDocuments()
            {
                DocumentCollection docs = Application.DocumentManager;
                foreach (Document doc in docs)
                {
                    // First cancel any running command
                    if (doc.CommandInProgress != "" &&
                        doc.CommandInProgress != "CD")
                    {
                        AcadDocument oDoc =
                          (AcadDocument)doc.AcadDocument;
                        oDoc.SendCommand("\x03\x03");
                    }

                    if (doc.IsReadOnly)
                    {
                        doc.CloseAndDiscard();
                    }
                    else
                    {
                        // Activate the document, so we can check DBMOD
                        if (docs.MdiActiveDocument != doc)
                        {
                            docs.MdiActiveDocument = doc;
                        }
                        int isModified =
                          System.Convert.ToInt32(
                            Application.GetSystemVariable("DBMOD")
                          );

                        // No need to save if not modified
                        if (isModified == 0)
                        {
                            doc.CloseAndDiscard();
                        }
                        else
                        {
                            // This may create documents in strange places
                            doc.CloseAndSave(doc.Name);
                        }
                    }
                }