CAD获取实体尺寸时。GetBoundingBox报错,空范围
求助:C# com,CAD二次开发,获取实体最大点,最小点,报错
foreach (AcadEntity entity in doc.ModelSpace)
{
if (entity.EntityName == "AcDbBlockReference")
{
AcadBlockReference returnBlock = (AcadBlockReference)entity;
object min, max;
returnBlock.GetBoundingBox(out min, out max);
请问,这里GetBoundingBox报错,空范围,请问是怎么回事了?