ReadDwgFile problem!! Please help!!!

[rollinson44]

The program will take the selected polyline and attribute and place them onto a template. The polyline is then dimensioned and the template is saved as whatever the name of the piece is in the attribute. This works great once. If i run a second time I get the following error:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt. acdbmgd at ?readDwgFile@AcDbDatabase@@$$FQAE?AW4ErrorStatus@Acad@@PB_WH_N0@Z(AcDbDatabase* , Char* , Int32 , Boolean , Char* ) at Autodesk.AutoCAD.DatabaseServices.Database.ReadDwgFile(String fileName, FileShare fileSharing, Boolean allowCPConversion, String password) at BlockExporter.Class1.openTemplate() in ...\BlockExporter\Class1.cs:line 451

The source code is below.

using System; using System.Collections.Generic; using System.Text; using Autodesk.AutoCAD; using database = Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.Runtime; using Autodesk.AutoCAD.EditorInput; using acad = Autodesk.AutoCAD; using app = Autodesk.AutoCAD.ApplicationServices; using ed = Autodesk.AutoCAD.EditorInput; using System.Collections; using System.Windows.Forms; namespace BlockExporter { public static class Class1 { //static database.TransactionManager templateTrm; static database.Transaction templateTr; static database.Database templatedb = new Autodesk.AutoCAD.DatabaseServices.Database(false, true); static database.BlockTable templateBt; static database.BlockTableRecord templateBtr; static acad.ApplicationServices.Document doc; static acad.Geometry.Point2dCollection p2dColl; static acad.Geometry.Matrix3d matrix; static acad.Geometry.Point3dCollection p3dColl; static ArrayList dims = new ArrayList(); static String[,] pointData; static double[] pointExtremes = new double[4]; static double rotate = 0; static String templateLocation; static String filename = ""; static String strandPattern = ""; [CommandMethod("detail")] public static void Detail() { doc = acad.ApplicationServices.Application.DocumentManager.MdiActiveDocument; DetailInterface interfaceForm = new DetailInterface(); app.Application.ShowModelessDialog(interfaceForm); } public static void dim(PromptEntityResult per, acad.EditorInput.Editor ed, PromptEntityResult attPer) { try { openTemplate(); acad.DatabaseServices.Database data = doc.Database; acad.DatabaseServices.Transaction tr = doc.TransactionManager.StartTransaction(); using (tr) { database.BlockTable bt = (database.BlockTable)tr.GetObject(data.BlockTableId, Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead); database.BlockTableRecord btr = (database.BlockTableRecord)tr.GetObject(bt[database.BlockTableRecord.ModelSpace ], Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead); acad.DatabaseServices.DBObject obj = tr.GetObject(per.ObjectId, Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead); acad.DatabaseServices.Polyline pl = obj as acad.DatabaseServices.Polyline; p2dColl = new Autodesk.AutoCAD.Geometry.Point2dCollection(); if (pl != null) { int vertex = pl.NumberOfVertices; for (int i = 0; i < vertex; i++) { acad.Geometry.Point2d pt = pl.GetPoint2dAt(i); p2dColl.Add(pt); //ed.WriteMessage("\n" + pt.ToString()); } } double[] blpt = findMiddlePoint(p2dColl); acad.Geometry.Point3d center3d = new Autodesk.AutoCAD.Geometry.Point3d(408, 594.0620, 0); matrix = acad.Geometry.Matrix3d.Rotation(getRotate() * Math.PI / 180, acad.Geometry.Vector3d.ZAxis, center3d); if (pl != null) { int vertex = pl.NumberOfVertices; for (int i = 0; i < vertex; i++) { acad.Geometry.Point2d pt = pl.GetPoint2dAt(i); p2dColl.Add(pt); //ed.WriteMessage("\n" + pt.ToString()); } } acad.Geometry.Point2dCollection tempColl = new Autodesk.AutoCAD.Geometry.Point2dCollection(); for (int i = 0; i <= p2dColl.Count - 1; i++) //cycle through collection and move points to desired location { acad.Geometry.Point2d newPt = new Autodesk.AutoCAD.Geometry.Point2d(p2dColl.X - blpt[0] + 408, p2dColl.Y - blpt[1] + 594.0620); tempColl.Add(newPt); } p2dColl = tempColl; p3dColl = new Autodesk.AutoCAD.Geometry.Point3dCollection(); //collection to hold 3D points for (int i = 0; i <= p2dColl.Count - 1; i++) //cycle through collection and create 3d points { acad.Geometry.Point3d pt3d = new Autodesk.AutoCAD.Geometry.Point3d(p2dColl.X, p2dColl.Y, 0); p3dColl.Add(pt3d); } pointData = new String[p2dColl.Count, 3]; //contains point, orientation, side acad.Geometry.Point2d tempPt = (acad.Geometry.Point2d)p2dColl[0]; //load initial values into pointExremes for first point in array pointExtremes[0] = tempPt.X; //left most x initial value pointExtremes[1] = tempPt.X; // right most x initial value pointExtremes[2] = tempPt.Y; // upper most y initial value pointExtremes[3] = tempPt.Y; // lower most y initial value //compare points to find extreme x and y's for (int i = 0; i <= p2dColl.Count - 1; i++) { acad.Geometry.Point2d comparePt; acad.Geometry.Point2d pt = (acad.Geometry.Point2d)p2dColl; if (i == p2dColl.Count - 1) { comparePt = (acad.Geometry.Point2d)p2dColl[0]; comparePoints(comparePt, pt, i); } else { comparePt = (acad.Geometry.Point2d)p2dColl[i + 1]; comparePoints(comparePt, pt, i); } checkExtremePoints(pt); } //loop to determine if polyline section is horizontal, vertical or skewed and then dimension appropriately using extreme x and y's for (int i = 0; i <= p2dColl.Count - 1; i++) { if (i == p2dColl.Count - 1) //make sure that this is not the last point, if it is then go to else { acad.Geometry.Point2d pt1 = (acad.Geometry.Point2d)p2dColl; acad.Geometry.Point2d pt2 = (acad.Geometry.Point2d)p2dColl[0]; acad.Geometry.Point3d p3t1 = new acad.Geometry.Point3d(pt1.X, pt1.Y, 0); acad.Geometry.Point3d p3t2 = new acad.Geometry.Point3d(pt2.X, pt2.Y, 0); acad.Geometry.Point3d p3t3; double rotation = 0; if (pointData[i, 1] == "horizontal") //if polyline segment is horizontal find its closest y extreme and dimension in that direction { rotation = 0; if (Math.Abs(pt1.Y - pointExtremes[2]) >= Math.Abs(pt1.Y - pointExtremes[3])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[3] - 60, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[2] + 60, 0); } } else if (pointData[i, 1] == "vertical") //if polyline segment is vertical find closest extreme x and dimension in that direction { rotation = 1.570796; if (Math.Abs(pt1.X - pointExtremes[0]) >= Math.Abs(pt1.X - pointExtremes[1])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[1] + 60, pt1.Y, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[0] - 60, pt1.Y, 0); } } else if (pointData[i, 1] == "skew") //if polyline segment is skewed then dimension to nearest x and y extremes (dimension twice, along x and y axis) { rotation = 0; if (Math.Abs(pt1.Y - pointExtremes[2]) >= Math.Abs(pt1.Y - pointExtremes[3])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[3] - 60, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[2] + 60, 0); } acad.DatabaseServices.RotatedDimension dimSkew1 = new acad.DatabaseServices.RotatedDimension(rotation, p3t1, p3t2, p3t3, String.Empty, templatedb.Dimstyle); dimSkew1.TransformBy(matrix); dims.Add(dimSkew1); rotation = 1.570796; if (Math.Abs(pt1.X - pointExtremes[0]) >= Math.Abs(pt1.X - pointExtremes[1])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[1] + 60, pt1.Y, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[0] - 60, pt1.Y, 0); } } acad.DatabaseServices.RotatedDimension dim = new acad.DatabaseServices.RotatedDimension(rotation, p3t1, p3t2, p3t3, String.Empty, templatedb.Dimstyle); dim.TransformBy(matrix); dims.Add(dim); } else { acad.Geometry.Point2d pt1 = (acad.Geometry.Point2d)p2dColl; acad.Geometry.Point2d pt2 = (acad.Geometry.Point2d)p2dColl[i + 1]; acad.Geometry.Point3d p3t1 = new acad.Geometry.Point3d(pt1.X, pt1.Y, 0); acad.Geometry.Point3d p3t2 = new acad.Geometry.Point3d(pt2.X, pt2.Y, 0); acad.Geometry.Point3d p3t3; double rotation = 0; if (pointData[i, 1] == "horizontal") //if horizontal find nearest y extreme and dimension in that direciton { rotation = 0; if (Math.Abs(pt1.Y - pointExtremes[2]) >= Math.Abs(pt1.Y - pointExtremes[3])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[3] - 60, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[2] + 60, 0); } } else if (pointData[i, 1] == "vertical") //if vertical find nearest x extreme and dimension in that direction { rotation = 1.570796; if (Math.Abs(pt1.X - pointExtremes[0]) >= Math.Abs(pt1.X - pointExtremes[1])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[1] + 60, pt1.Y, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[0] - 60, pt1.Y, 0); } } else if (pointData[i, 1] == "skew") //if skew then dimension twice (in x and y planes) { rotation = 0; if (Math.Abs(pt1.Y - pointExtremes[2]) >= Math.Abs(pt1.Y - pointExtremes[3])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[3] - 60, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pt1.X, pointExtremes[2] + 60, 0); } acad.DatabaseServices.RotatedDimension dimSkew1 = new acad.DatabaseServices.RotatedDimension(rotation, p3t1, p3t2, p3t3, String.Empty, templatedb.Dimstyle); dimSkew1.TransformBy(matrix); dims.Add(dimSkew1); rotation = 1.570796; if (Math.Abs(pt1.X - pointExtremes[0]) >= Math.Abs(pt1.X - pointExtremes[1])) { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[1] + 60, pt1.Y, 0); } else { p3t3 = new Autodesk.AutoCAD.Geometry.Point3d(pointExtremes[0] - 60, pt1.Y, 0); } } acad.DatabaseServices.RotatedDimension dim2 = new acad.DatabaseServices.RotatedDimension(rotation, p3t1, p3t2, p3t3, String.Empty, templatedb.Dimstyle); dim2.TransformBy(matrix); dims.Add(dim2); } } //extract data from selected attribute acad.DatabaseServices.BlockReference attBRef = (acad.DatabaseServices.BlockReference)tr.GetObject(attPer.ObjectId, Autodesk.AutoCAD.DatabaseServices.OpenMode.ForRead); acad.DatabaseServices.AttributeCollection attColl = attBRef.AttributeCollection; acad.DatabaseServices.AttributeReference attRef; //cycle through each attribute in collection until reaching Tag=Mark# and Tag=Unit then extract that data for text in detail drawing for (int i = 0; i <= attColl.Count - 1; i++) { attRef = (acad.DatabaseServices.AttributeReference)attColl.GetObject(Autodesk.AutoCAD .DatabaseServices.OpenMode.ForRead); if (attRef.Tag.ToString() == "MARK") { filename = attRef.TextString.ToString().Trim(); } if (attRef.Tag.ToString() == "UNIT") { strandPattern = attRef.TextString.ToString().Trim(); } } //obj.Dispose(); //pl.Dispose(); //attBRef.Dispose(); //bt.Dispose(); //btr.Dispose(); //data.Dispose(); } //tr.Dispose(); using (templateTr) { //get textstyle for drawing to be added to text in attribute definition database.TextStyleTable styleTable; database.TextStyleTableRecord styleTr; styleTable = (database.TextStyleTable)templatedb.TextStyleTableId.GetObject(Autodesk.AutoCAD .DatabaseServices.OpenMode.ForRead); styleTr = (database.TextStyleTableRecord)styleTable["STANDARD"].GetObject(Autodesk.AutoCA D.DatabaseServices.OpenMode.ForRead); //get layer for polyline (our panel) database.LayerTable laytable; database.LayerTableRecord laytr; laytable = (database.LayerTable)templatedb.LayerTableId.GetObject(Autodesk.AutoCAD.Databas eServices.OpenMode.ForRead); laytr = (database.LayerTableRecord)laytable["HCPANEL"].GetObject(Autodesk.AutoCAD.Datab aseServices.OpenMode.ForRead); //create polyline (our panel) database.Polyline2d newPl = new Autodesk.AutoCAD.DatabaseServices.Polyline2d(Autodesk.AutoCAD.DatabaseServices. Poly2dType.SimplePoly, p3dColl, 0, true, 0, 0, null); newPl.TransformBy(matrix); newPl.LayerId = laytr.ObjectId; //create MText for the Mark# database.MText fileNameText = new Autodesk.AutoCAD.DatabaseServices.MText(); fileNameText.TextStyle = styleTr.ObjectId; fileNameText.TextHeight = 15; fileNameText.Contents = "Mark#: " + filename.ToString(); fileNameText.Location = new Autodesk.AutoCAD.Geometry.Point3d(120.00, 175.00, 0); //create MText for the standPattern database.MText strandPtrn = new Autodesk.AutoCAD.DatabaseServices.MText(); strandPtrn.TextStyle = styleTr.ObjectId; strandPtrn.TextHeight = 15; strandPtrn.Contents = "Strand Pattern: " + strandPattern.ToString(); strandPtrn.Location = new Autodesk.AutoCAD.Geometry.Point3d(120.00, 155.00, 0); //add new BlockTableReference and polyline to new drawing templateBtr.UpgradeOpen(); for (int i = 0; i <= dims.Count - 1; i++) { database.RotatedDimension dim = (database.RotatedDimension)dims; templateBtr.AppendEntity(dim); templateTr.AddNewlyCreatedDBObject(dim, true); dim.Dispose(); } templateBtr.DowngradeOpen(); templateBtr.AppendEntity(newPl); templateTr.AddNewlyCreatedDBObject(newPl, true); templateBtr.AppendEntity(fileNameText); templateTr.AddNewlyCreatedDBObject(fileNameText, true); templateBtr.AppendEntity(strandPtrn); templateTr.AddNewlyCreatedDBObject(strandPtrn, true); templateTr.Commit(); //templateTr.Commit(); //newPl.Dispose(); //strandPtrn.Dispose(); //fileNameText.Dispose(); //styleTable.Dispose(); //styleTr.Dispose(); //laytable.Dispose(); //laytr.Dispose(); //templateBtr.Dispose(); //templateBt.Dispose(); } //templatedb.CloseInput(true); templatedb.SaveAs("C:\\" + filename.ToString() + ".dwg", Autodesk.AutoCAD.DatabaseServices.DwgVersion.Current); templatedb.CloseInput(true); templatedb.Dispose(); GC.Collect(); //templateTr.Dispose(); } catch (System.Exception exception) { ed.WriteMessage(exception.Message.ToString()); ed.WriteMessage("\n" + exception.Source.ToString()); ed.WriteMessage("\n" + exception.StackTrace.ToString()); } } //method determines center of panel to be detailed private static double[] findMiddlePoint(Autodesk.AutoCAD.Geometry.Point2dCollection tempPoints) { double[] middlePoint = new double[4]; middlePoint[0] = tempPoints[0].X; middlePoint[1] = tempPoints[0].Y; middlePoint[2] = tempPoints[0].X; middlePoint[3] = tempPoints[0].Y; for (int i = 0; i <= tempPoints.Count - 1; i++) { if (middlePoint[0] > tempPoints.X) { middlePoint[0] = tempPoints.X; } if (middlePoint[1] > tempPoints.Y) { middlePoint[1] = tempPoints.Y; } if (middlePoint[2] < tempPoints.X) { middlePoint[2] = tempPoints.X; } if (middlePoint[3] < tempPoints.Y) { middlePoint[3] = tempPoints.Y; } } double[] middlePt = new double[2]; middlePt[0] = ((middlePoint[2] - middlePoint[0]) / 2 + middlePoint[0]); middlePt[1] = ((middlePoint[3] - middlePoint[1]) / 2 + middlePoint[1]); return middlePt; //returns center of panel to be detailed } //determines the extreme x and y's for the panel to be detailed private static void checkExtremePoints(acad.Geometry.Point2d comparePt) { if (pointExtremes[0] > comparePt.X ) { pointExtremes[0] = comparePt.X; //set left extreme x } if (pointExtremes[1] < comparePt.X) { pointExtremes[1] = comparePt.X; //set right extreme x } if (pointExtremes[2] < comparePt.Y) { pointExtremes[2] = comparePt.Y; //set upper extreme y } if (pointExtremes[3] > comparePt.Y) { pointExtremes[3] = comparePt.Y; //set lower extreme y } } //determines if line segments are vertical, horizontal, or skew private static void comparePoints(acad.Geometry.Point2d comparePt, acad.Geometry.Point2d origPt, int i) { if (Math.Abs(comparePt.X - origPt.X) < .01) { pointData[i, 0] = origPt.ToString(); pointData[i, 1] = "vertical"; } else if (Math.Abs(comparePt.Y - origPt.Y) < .01) { pointData[i, 0] = origPt.ToString(); pointData[i, 1] = "horizontal"; } else// if ((Math.Abs(comparePt.X - origPt.X) > .01) && (Math.Abs(comparePt.Y - origPt.Y) > .01)) { pointData[i, 0] = origPt.ToString(); pointData[i, 1] = "skew"; } } //opens the template drawing to be used for the detail private static void openTemplate() { templatedb.ReadDwgFile(getTemplateLocation(), System.IO.FileShare.ReadWrite, true, null); //templateTrm = templatedb.TransactionManager; templateTr = templatedb.TransactionManager.StartTransaction(); templateBt = (database.BlockTable)templatedb.BlockTableId.GetObject(Autodesk.AutoCAD.Databas eServices.OpenMode.ForWrite); templateBtr = (database.BlockTableRecord)templateBt[database.BlockTableRecord.ModelSpace].Get Object(Autodesk.AutoCAD.DatabaseServices.OpenMode.ForWrite); } //sets the template location (set from the form) public static void setTemplateLocation(String location) { templateLocation = location; } //returns the template location private static String getTemplateLocation() { return templateLocation; } public static void setRotate(Double ro) { rotate = ro; } public static Double getRotate() { return rotate; } } }

[rollinson44]

Solved the problem. I was calling the ReadDwgFile() method outside of my main block so it wasn't working with the using statement. After I pulled that into the main block everything works fine.