topic Re: .Net c# updating xref path without opening the drawing. in .NET Forum

.Net c# updating xref path without opening the drawing.

Anonymous — Mon, 06 Aug 2012 12:17:29 GMT

Hello coders,

I am building a plugin which needs to change the xref path within a drawing without opening it.

here is my. please throw some light on where i went wrong..I am a newbiee..to .Net c#

=====================================================================

[CommandMethod("refremap")]
public void refremap() // This method can have any name
{
//Get the document
Document Doc = Application.DocumentManager.MdiActiveDocument;
Editor ed = Doc.Editor;

// Ask the user to select a folder

PromptResult res = ed.GetString("\nEnter the path of the folder: ");

if (res.Status == PromptStatus.OK)
{
string[] filepaths = Directory.GetFiles(res.StringResult, "*.dwg", SearchOption.AllDirectories);
int filecount = filepaths.Length;
ed.WriteMessage("\nScanning " + filecount + " files");
int finalxrefcount = 0;
int xrefedfile = 0;

for (int i = 0; i < filecount; i++)
{

ed.WriteMessage("\n File Name : " + filepaths[i]);
//create a database and try to load the file
Database db = new Database(false, true);
using (db)
{
try
{
db.ReadDwgFile(filepaths[i], System.IO.FileShare.Read, false, "");
}
catch (System.Exception)
{
ed.WriteMessage("\nUnable to read the drawingfile.");
return;
}
using (Transaction tr = db.TransactionManager.StartTransaction())
{
ed.WriteMessage("\n--------Xrefs Details--------");
db.ResolveXrefs(true, false);

XrefGraph xg = db.GetHostDwgXrefGraph(true);
GraphNode root = xg.RootNode;
//XrefObjectId xobj = new XrefObjectId();
ObjectIdCollection objcoll = new ObjectIdCollection();

int xrefcount = xg.NumNodes - 1;

if (xrefcount == 0)
{
ed.WriteMessage("\nNo xrefs found in the drawing");

}
else
{
for (int r = 1; r < (xrefcount+1); r++)
{
XrefGraphNode child = xg.GetXrefNode(r);
if (child.XrefStatus == XrefStatus.FileNotFound)
{

BlockTableRecord btr = (BlockTableRecord)tr.GetObject(child.BlockTableRecordId, OpenMode.ForWrite);

db.XrefEditEnabled = true;

string originalpath = btr.PathName;
string childname = Path.GetFileName(originalpath);
string newpath = @"E:\acad_dev_testing22\test\" + childname;

btr.PathName = newpath;

ed.WriteMessage("\n xref old path: " + originalpath);
ed.WriteMessage("\n xref new path: " + newpath + " xref fixed !!");

}

}

}

tr.Commit();
}

}

}
ed.WriteMessage("\nTotal number of files scanned: " + filecount);
ed.WriteMessage("\nTotal number of files that contains xref : " + xrefedfile);
ed.WriteMessage("\nTotal number of xrefs : " + finalxrefcount);
ed.WriteMessage("\nTotal number of xrefs attached and working : " + filecount);
ed.WriteMessage("\nTotal number of xrefs that are not working : " + filecount);
ed.WriteMessage("\n----------------------------------------\n");
ed.WriteMessage("\n----------------------------------------\n");
}
else
{
return;
}
}

Re: .Net c# updating xref path without opening the drawing.

Anonymous — Mon, 06 Aug 2012 19:39:23 GMT

We can fix the following code (in red):

using (db)
{
   try
   {
       db.ReadDwgFile(filepaths[i], FileShare.Read, false, "");
   }
   catch (System.Exception)
   {
       ed.WriteMessage("\nUnable to read the drawingfile.");
       return;
   }
   using (Transaction tr = db.TransactionManager.StartTransaction())
   {
       ed.WriteMessage("\n--------Xrefs Details--------");
       db.ResolveXrefs(true, false);

       XrefGraph xg = db.GetHostDwgXrefGraph(true);
       int xrefcount = xg.NumNodes - 1;

       if (xrefcount == 0)
       {
           ed.WriteMessage("\nNo xrefs found in the drawing");
       }
       else
       {
           for (int r = 1; r < (xrefcount + 1); r++)
           {
               XrefGraphNode child = xg.GetXrefNode(r);
               if (child.XrefStatus == XrefStatus.Resolved)
               {
                   BlockTableRecord btr = (BlockTableRecord)tr.GetObject(child.BlockTableRecordId, OpenMode.ForWrite);

                   db.XrefEditEnabled = true;

                   string originalpath = btr.PathName;
                   string childname = Path.GetFileName(originalpath);
                   string newpath = @"E:\acad_dev_testing22\test\" + childname;
                   btr.PathName = newpath;

                   ed.WriteMessage("\n xref old path: " + originalpath);
                   ed.WriteMessage("\n xref new path: " + newpath + " xref fixed !!");
               }
           }
           tr.Commit();
       }
   }

// Overwrite the current drawing file with new updated XRef paths
db.SaveAs(filepaths[i], DwgVersion.Current);
}

You should save the database back to its file after making changes. Don't need to commit transaction if this file does not have xrefs.

-Khoa

Re: .Net c# updating xref path without opening the drawing.

Anonymous — Thu, 09 Aug 2012 06:50:39 GMT

Thanks mate for you advice,

I am getting following error:

Autodesk.AutoCAD.Runtime.Exception: eFileSharingViolation
at Autodesk.AutoCAD.DatabaseServices.Database.SaveAs(String fileName, DwgVersion version)
at Xref.MyCommands.refremap() in D:\Dev Zone\Ms.NET\Projects\Xref\Xref\myCommands.cs:line 361
at Autodesk.AutoCAD.Runtime.CommandClass.InvokeWorker(MethodInfo mi, Object commandObject, Boolean bLispFunction)

========================================================================================

XrefGraph xg = db.GetHostDwgXrefGraph(true);
GraphNode root = xg.RootNode;
//XrefObjectId xobj = new XrefObjectId();
ObjectIdCollection objcoll = new ObjectIdCollection();

int xrefcount = xg.NumNodes - 1;

if (xrefcount == 0)
{
ed.WriteMessage("\nNo xrefs found in the drawing");

}
else
{
for (int r = 1; r < (xrefcount + 1); r++)
{
XrefGraphNode child = xg.GetXrefNode(r);
if (child.XrefStatus == XrefStatus.Resolved)
{

BlockTableRecord btr = (BlockTableRecord)tr.GetObject(child.BlockTableRecordId, OpenMode.ForWrite);

db.XrefEditEnabled = true;

string originalpath = btr.PathName;
string childname = Path.GetFileName(originalpath);
string newpath = @"D:\test_area\xref\sub_folder\" + childname;

btr.PathName = newpath;

ed.WriteMessage("\n xref old path: " + originalpath);
ed.WriteMessage("\n xref new path: " + newpath + " xref fixed !!");

}

}
tr.Commit();
}

}
db.SaveAs(filepaths[i], DwgVersion.Current);
}

Re: .Net c# updating xref path without opening the drawing.

Balaji_Ram — Fri, 10 Aug 2012 14:02:26 GMT

Try using "System.IO.FileShare.ReadWrite" as the parameter in "ReadDwgFile".

Re: .Net c# updating xref path without opening the drawing.

Anonymous — Mon, 13 Aug 2012 08:42:19 GMT

Thanks Balaji, Will try and update