public void CreateBlock()
{
using (Transaction tr = AcadFuncs.GetActiveDb().TransactionManager.StartTransaction())
{
// Get the block table from the drawing
BlockTable blk_tbl = (BlockTable)tr.GetObject(
AcadFuncs.GetActiveDb().BlockTableId,
OpenMode.ForRead);
PromptStringOptions pso = new PromptStringOptions("\nEnter new block name: ");
pso.AllowSpaces = true;
string blk_name = "";
do
{
PromptResult pr = AcadFuncs.GetEditor().GetString(pso);
if (PromptStatus.OK != pr.Status)
{
return;
}
try
{
SymbolUtilityServices.ValidateSymbolName(pr.StringResult, false);
if (blk_tbl.Has(pr.StringResult))
{
AcadFuncs.GetEditor().WriteMessage("\nA block with this name already exists.");
}
else
{
blk_name = pr.StringResult;
}
}
catch
{
AcadFuncs.GetEditor().WriteMessage("\nInvalid block name.");
}
} while ("" == blk_name);
BlockTableRecord btr = new BlockTableRecord();
btr.Name = blk_name;
blk_tbl.UpgradeOpen();
ObjectId btrId = blk_tbl.Add(btr);
tr.AddNewlyCreatedDBObject(btr, true);
DBObjectCollection ents = SquareOfLines(5);
foreach (Entity ent in ents)
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, true);
}
BlockTableRecord ms = (BlockTableRecord)tr.GetObject(blk_tbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
BlockReference br = new BlockReference(AcadGeo.Point3d.Origin, btrId);
ms.AppendEntity(br);
tr.AddNewlyCreatedDBObject(br, true);
tr.Commit();
}
}
public void AddingAttributeToABlock()
{
// Get the current database and start a transaction
using (Transaction acTrans = AcadFuncs.GetActiveDb().TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(AcadFuncs.GetActiveDb().BlockTableId, OpenMode.ForRead) as BlockTable;
if (!acBlkTbl.Has("CircleBlockWithAttributes"))
{
using (BlockTableRecord blk_tbl_rcd = new BlockTableRecord())
{
blk_tbl_rcd.Name = "CircleBlockWithAttributes";
blk_tbl_rcd.Origin = new AcadGeo.Point3d(0, 0, 0);
using (Circle circle = new Circle())
{
circle.Center = new AcadGeo.Point3d(0, 0, 0);
circle.Radius = 2;
blk_tbl_rcd.AppendEntity(circle);
// Add an attribute definition to the block
using (AttributeDefinition att_def = new AttributeDefinition())
{
att_def.Position = new AcadGeo.Point3d(0, 0, 0);
att_def.Verifiable = true;
att_def.Prompt = "Door #: ";
att_def.Tag = "Door#";
att_def.TextString = "DXX";
att_def.Height = 1;
att_def.Justify = AttachmentPoint.MiddleCenter;
blk_tbl_rcd.AppendEntity(att_def);
acBlkTbl.UpgradeOpen();
acBlkTbl.Add(blk_tbl_rcd);
acTrans.AddNewlyCreatedDBObject(blk_tbl_rcd, true);
}
}
}
}
// Save the new object to the database
acTrans.Commit();
// Dispose of the transaction
}
}
public void GettingAttributes()
{
using (Transaction tran = AcadFuncs.GetActiveDb().TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable acBlkTbl;
acBlkTbl = tran.GetObject(AcadFuncs.GetActiveDb().BlockTableId, OpenMode.ForRead) as BlockTable;
ObjectId blkRecId = ObjectId.Null;
if (!acBlkTbl.Has("TESTBLOCK"))
{
using (BlockTableRecord acBlkTblRec = new BlockTableRecord())
{
acBlkTblRec.Name = "TESTBLOCK";
// Set the insertion point for the block
acBlkTblRec.Origin = new AcadGeo.Point3d(0, 0, 0);
// Add an attribute definition to the block
using (AttributeDefinition acAttDef = new AttributeDefinition())
{
acAttDef.Position = new AcadGeo.Point3d(5, 5, 0);
acAttDef.Prompt = "1234";
acAttDef.Tag = "My Att";
acAttDef.TextString = "4321";
acAttDef.Height = 1;
acAttDef.Justify = AttachmentPoint.MiddleCenter;
acBlkTblRec.AppendEntity(acAttDef);
acBlkTbl.UpgradeOpen();
acBlkTbl.Add(acBlkTblRec);
tran.AddNewlyCreatedDBObject(acBlkTblRec, true);
}
blkRecId = acBlkTblRec.Id;
}
}
else
{
blkRecId = acBlkTbl["CircleBlockWithAttributes"];
}
// Create and insert the new block reference
if (blkRecId != ObjectId.Null)
{
BlockTableRecord acBlkTblRec;
acBlkTblRec = tran.GetObject(blkRecId, OpenMode.ForRead) as BlockTableRecord;
using (BlockReference acBlkRef = new BlockReference(new AcadGeo.Point3d(5, 5, 0), acBlkTblRec.Id))
{
BlockTableRecord acCurSpaceBlkTblRec;
acCurSpaceBlkTblRec = tran.GetObject(AcadFuncs.GetActiveDb().CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;
acCurSpaceBlkTblRec.AppendEntity(acBlkRef);
tran.AddNewlyCreatedDBObject(acBlkRef, true);
// Verify block table record has attribute definitions associated with it
if (acBlkTblRec.HasAttributeDefinitions)
{
// Add attributes from the block table record
foreach (ObjectId objID in acBlkTblRec)
{
DBObject dbObj = tran.GetObject(objID, OpenMode.ForRead) as DBObject;
if (dbObj is AttributeDefinition)
{
AttributeDefinition acAtt = dbObj as AttributeDefinition;
if (!acAtt.Constant)
{
using (AttributeReference acAttRef = new AttributeReference())
{
acAttRef.SetAttributeFromBlock(acAtt, acBlkRef.BlockTransform);
acAttRef.Position = acAtt.Position.TransformBy(acBlkRef.BlockTransform);
acAttRef.TextString = acAtt.TextString;
acBlkRef.AttributeCollection.AppendAttribute(acAttRef);
tran.AddNewlyCreatedDBObject(acAttRef, true);
}
}
}
}
// Display the tags and values of the attached attributes
string message = "";
AttributeCollection atts = acBlkRef.AttributeCollection;
foreach (ObjectId obj_id in atts)
{
AttributeReference att_ref = tran.GetObject(obj_id, OpenMode.ForRead) as AttributeReference;
message = message + "Tag: " + att_ref.Tag + "\n" +
"Value: " + att_ref.TextString + "\n";
}
AcadApp.Application.ShowAlertDialog("The attributes for blockReference " + acBlkRef.Name + " are:\n" + message);
}
}
}
// Save the new object to the database
tran.Commit();
// Dispose of the transaction
}
}
