C++中使用ZcDbDynBlockReferenceProperty::setValue接口

ZRXCMD3(ScaleDynBlock)
{
	zds_name ename;
	zds_point pt;
	if (RTNORM != zcedEntSel(_T("选择动态块.\n"), ename, pt))
	{
		return;
	}

	ZcDbObjectId entId;
	ZcDbEntity* pEnt = NULL;
	zcdbGetObjectId(entId, ename);
	ZcDbDynBlockReference dynBlkRef(entId);
	if (!dynBlkRef.isDynamicBlock())
	{
		return;
	}

	ZcDbDynBlockReferencePropertyArray props;
	dynBlkRef.getBlockProperties(props);
	for (int i = 0; i < props.length(); i++)
	{
		ZcDbDynBlockReferenceProperty prop = props[i];
		ZcString propName = prop.propertyName();
		ZcDbEvalVariant eVal = prop.value();
		// 实际应用中可根据属性的类型(type)、单位类型(UnitsType)、属性名(PropertyName)等进行判断
		//if (eVal.getType() == ZcDb::DwgDataType::kDwgReal)
		if (prop.unitsType() == ZcDbDynBlockReferenceProperty::kDistance)
		{
			eVal.resval.rreal *= 2;
			prop.setValue(eVal);
		}
	}
}

C#中使用DynamicBlockReferenceProperty.Value属性

[CommandMethod("NetScaleDynBlock")]
static public void NetScaleDynBlock()
{
    var db = HostApplicationServices.WorkingDatabase;
    var ed = Application.DocumentManager.MdiActiveDocument.Editor;
    var per = ed.GetEntity("选择动态块");
    if (PromptStatus.OK != per.Status)
    {
        return;
    }
    using (var tr = db.TransactionManager.StartTransaction())
    {
        BlockReference brf = tr.GetObject(per.ObjectId, OpenMode.ForWrite) as BlockReference;
        foreach (DynamicBlockReferenceProperty prop in brf.DynamicBlockReferencePropertyCollection)
        {
            // 实际应用中可根据属性的类型(type)、单位类型(UnitsType)、属性名(PropertyName)等进行判断
            //if (prop.PropertyTypeCode == 1)
            if(prop.UnitsType == DynamicBlockReferencePropertyUnitsType.Distance)
            {
                double val = Convert.ToDouble(prop.Value);
                prop.Value = val * 2;
            }
        }
        tr.Commit();
    }
}