请教高手：c#创建块出问题了
c#创建块出问题：我电脑中装的是VS2008,2008；创建块是提示“绑定到方法时出错”；详图见附件；
请高手看看怎么回事，谢谢！！！！！！
**** Hidden Message ***** 不好意思，刚才忘记上传程序代码了。 不要返回值，改一个，其余类似
public void CreateBlock()
{
Database db = HostApplicationServices.WorkingDatabase;
ObjectId blockId = ObjectId.Null;//用于返回所创建的块的对象Id
BlockTableRecord record = new BlockTableRecord();//创建一个BlockTableRecord类的对象，表示所要创建的块
record.Name = "Room";//设置块名
using (Transaction trans = db.TransactionManager.StartTransaction())
{
Point3dCollection points = new Point3dCollection();//用于表示组成块的多段线的顶点
points.Add(new Point3d(-18.0, -6.0, 0.0));
points.Add(new Point3d(18.0, -6.0, 0.0));
points.Add(new Point3d(18.0, 6.0, 0.0));
points.Add(new Point3d(-18.0, 6.0, 0.0));
Polyline2d pline = new Polyline2d(Poly2dType.SimplePoly, points, 0.0, true, 0.0, 0.0, null);//创建组成块的多段线
record.Origin = points;//设置块的基点
record.AppendEntity(pline);//将多段线加入到新建的BlockTableRecord对象
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForWrite);//以写的方式打开块表
if (!bt.Has("Room"))//判断是否存在名为"Room"的块
{
blockId = bt.Add(record);//在块表中加入"Room"块
trans.AddNewlyCreatedDBObject(record, true);//通知事务处理
trans.Commit();//提交事务
}
}
//return blockId;//返回创建的块的对象Id
}
不要返回值，调试时autocad2008没有创建任何块吗？怎末回事？
使用上面的代码调试，cad屏幕无任何图形
把块定义和块参照分清楚先
你只定义了一个块，当然没有显示
谢谢超级版主雪山飞狐；我刚刚接触C#二次开发cad；您说的有道理，谢谢赐教！！！
飞狐，您好，请问一下如果是创建含填充色的块，改如何创建，下面是代码，到acTrans.AddNewlyCreatedDBObject(acCir, true);时报错
//创建块定义
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
BlockTable bt = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForWrite) as BlockTable;
BlockTableRecord blk = null;
if (!bt.Has("美化天线"))
{
blk = new BlockTableRecord();
blk.Name = "美化天线";
Circle acCir = new Circle();
acCir.Radius = 1.5;
acCir.Center = new Point3d(0, 0, 0);
blk.AppendEntity(acCir);
//acTrans.AddNewlyCreatedDBObject(acCir, true);
Circle acCir1 = new Circle();
acCir1.Radius = 3;
acCir1.Center = new Point3d(0, 0, 0);
blk.AppendEntity(acCir1);
//acTrans.AddNewlyCreatedDBObject(acCir1, true);
/*
ObjectIdCollection acObjIdColl = new ObjectIdCollection();
acObjIdColl.Add(acCir.ObjectId);
ObjectIdCollection acObjIdColl1 = new ObjectIdCollection();
acObjIdColl1.Add(acCir1.ObjectId);
Hatch acHatch = new Hatch();
acTrans.AddNewlyCreatedDBObject(acHatch, true);
acHatch.SetDatabaseDefaults();
acHatch.HatchObjectType = HatchObjectType.GradientObject;
acHatch.SetGradient(GradientPatternType.PreDefinedGradient, "SPHERICAL");
// We're defining two colours
acHatch.GradientOneColorMode = false;
GradientColor[] gcs = new GradientColor;
gcs = new GradientColor(Color.FromRgb(213, 213, 210), 0);
gcs = new GradientColor(Color.FromRgb(255, 255, 255), 1);
acHatch.SetGradientColors(gcs);
//acHatch.Elevation = 0;
acHatch.Associative = true;
acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl);
acHatch.AppendLoop(HatchLoopTypes.Default, acObjIdColl1);
acHatch.EvaluateHatch(true);
acHatch.HatchStyle = HatchStyle.Outer;
blk.AppendEntity(acHatch);
*/
labelblkid = bt.Add(blk);
acTrans.AddNewlyCreatedDBObject(blk, true);
}
else
{
blk = acTrans.GetObject(bt["美化天线"], OpenMode.ForWrite) as BlockTableRecord;
labelblkid = blk.ObjectId;
}
acTrans.Commit();
}
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