回复
把这几句
foreach (ObjectId id in res.Value.GetObjectIds())
{
Entity ent = trans.GetObject(id, OpenMode.ForWrite) as Entity;
Entity NewEnt = (Entity)ent.Clone();
record.AppendEntity(NewEnt);
}
换成
record.AssumeOwnershipOf( new ObjectIdCollection(res.Value.GetObjectIds()));
2012版测试无法通过，需要改为下面代码：using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
namespace CollectionCreation
{
public class Commands
{
[CommandMethod("CB")]
public void CreateBlock()
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
Transaction tr =
db.TransactionManager.StartTransaction();
using (tr)
{
// Get the block table from the drawing
BlockTable bt =
(BlockTable)tr.GetObject(
db.BlockTableId,
OpenMode.ForRead
);
// Check the block name, to see whether it's
// already in use
PromptStringOptions pso =
new PromptStringOptions(
"\nEnter new block name: "
);
pso.AllowSpaces = true;
// A variable for the block's name
string blkName = "";
do
{
PromptResult pr = ed.GetString(pso);
// Just return if the user cancelled
// (will abort the transaction as we drop out of the using
// statement's scope)
if (pr.Status != PromptStatus.OK)
return;
try
{
// Validate the provided symbol table name
SymbolUtilityServices.ValidateSymbolName(
pr.StringResult,
false
);
// Only set the block name if it isn't in use
if (bt.Has(pr.StringResult))
ed.WriteMessage(
"\nA block with this name already exists."
);
else
blkName = pr.StringResult;
}
catch
{
// An exception has been thrown, indicating the
// name is invalid
ed.WriteMessage(
"\nInvalid block name."
);
}
} while (blkName == "");
// Create our new block table record...
BlockTableRecord btr = new BlockTableRecord();
// ... and set its properties
btr.Name = blkName;
// Add the new block to the block table
bt.UpgradeOpen();
ObjectId btrId = bt.Add(btr);
tr.AddNewlyCreatedDBObject(btr, true);
// Add some lines to the block to form a square
// (the entities belong directly to the block)
DBObjectCollection ents = SquareOfLines(5);
foreach (Entity ent in ents)
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
// Add a block reference to the model space
BlockTableRecord ms =
(BlockTableRecord)tr.GetObject(
bt[BlockTableRecord.ModelSpace],
OpenMode.ForWrite
);
BlockReference br =
new BlockReference(Point3d.Origin, btrId);
ms.AppendEntity(br);
tr.AddNewlyCreatedDBObject(br, true);
// Commit the transaction
tr.Commit();
// Report what we've done
ed.WriteMessage(
"\nCreated block named \"{0}\" containing {1} entities.",
blkName, ents.Count
);
}
}
private DBObjectCollection SquareOfLines(double size)
{
// A function to generate a set of entities for our block
DBObjectCollection ents = new DBObjectCollection();
Point3d[] pts =
{ new Point3d(-size, -size, 0),
new Point3d(size, -size, 0),
new Point3d(size, size, 0),
new Point3d(-size, size, 0)
};
int max = pts.GetUpperBound(0);
for (int i = 0; i <= max; i++)
{
int j = (i == max ? 0 : i + 1);
Line ln = new Line(pts[i], pts[j]);
ents.Add(ln);
}
return ents;
}
}
}
置顶卡
