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copied!<p>To solve this problem I have copied specific properties from the <code>AttributeReference</code> into a new <code>DBText</code> object. Here is the specific code that worked for me to burst a blockreference. <code>SetTextStyle</code> and <code>GetTextStyle</code> are extension methods on the <code>DBText</code> class to work with changes between versions of the AutoCAD API.</p> <pre><code>private static void BurstSingle(Transaction transaction, Database database, BlockReference blockReference) { BlockTableRecord theModelSpaceBlock = (BlockTableRecord)transaction.GetObject(blockReference.BlockId, OpenMode.ForWrite); foreach (ObjectId attributeReferenceId in blockReference.AttributeCollection) { AttributeReference attributeReference = (AttributeReference)transaction.GetObject(attributeReferenceId, OpenMode.ForWrite); Entity textVersionOfAttributeReference; if (attributeReference.IsMTextAttribute) { MText mText = (MText)attributeReference.MTextAttribute.Clone(); textVersionOfAttributeReference = mText; } else { DBText dbText = new DBText(); dbText.SetDatabaseDefaults(database); dbText.Thickness = attributeReference.Thickness; if (attributeReference.LayerId == database.LayerZero) dbText.LayerId = blockReference.LayerId; else dbText.LayerId = attributeReference.LayerId; if (attributeReference.ColorIndex == EntityColorIndex_ByBlock) dbText.ColorIndex = blockReference.ColorIndex; else dbText.ColorIndex = attributeReference.ColorIndex; if (attributeReference.Linetype.ToUpper() == "BYBLOCK") dbText.LinetypeId = blockReference.LinetypeId; else dbText.LinetypeId = attributeReference.LinetypeId; dbText.Height = attributeReference.Height; dbText.TextString = attributeReference.TextString; dbText.Rotation = attributeReference.Rotation; dbText.Oblique = attributeReference.Oblique; dbText.SetTextStyle(attributeReference.GetTextStyle()); dbText.IsMirroredInX = attributeReference.IsMirroredInX; dbText.IsMirroredInY = attributeReference.IsMirroredInY; dbText.HorizontalMode = attributeReference.HorizontalMode; dbText.VerticalMode = attributeReference.VerticalMode; if (attributeReference.AlignmentPoint.Y != 0.0) dbText.AlignmentPoint = attributeReference.AlignmentPoint; dbText.Position = attributeReference.Position; dbText.Normal = attributeReference.Normal; dbText.WidthFactor = attributeReference.WidthFactor; textVersionOfAttributeReference = dbText; theModelSpaceBlock.AppendEntity(textVersionOfAttributeReference); transaction.AddNewlyCreatedDBObject(textVersionOfAttributeReference, true); } } DBObjectCollection explodedParts = new DBObjectCollection(); blockReference.Explode(explodedParts); foreach (Entity explodedPart in explodedParts) { if (!(explodedPart is AttributeDefinition)) { if (explodedPart.ColorIndex == EntityColorIndex_ByBlock) explodedPart.ColorIndex = blockReference.ColorIndex; if (explodedPart.LayerId == database.LayerZero) explodedPart.LayerId = blockReference.LayerId; if (explodedPart.Linetype.ToUpper() == "BYBLOCK") explodedPart.LinetypeId = blockReference.LinetypeId; theModelSpaceBlock.AppendEntity(explodedPart); transaction.AddNewlyCreatedDBObject(explodedPart, true); } explodedPart.Dispose(); } explodedParts.Clear(); blockReference.Erase(); } </code></pre>

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