https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12844776#M3597 My question is whether there is a way to handle a larger quantity, like 2000, 3000, or 4000, because the way I am doing it now takes a long time. Mon, 17 Jun 2024 17:28:23 GMT artillis_prado 2024-06-17T17:28:23Z https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12840813#M3595 <P>And I want to use the above union command for more than 2000 regions. I can do it manually, but I would like to know how to do it using the API.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="artillis_prado_0-1718395060734.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1376259i2AE3E74D16F73BD5/image-size/medium?v=v2&amp;px=400" role="button" title="artillis_prado_0-1718395060734.png" alt="artillis_prado_0-1718395060734.png" /></span></P> Fri, 14 Jun 2024 20:03:18 GMT https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12840813#M3595 artillis_prado 2024-06-14T20:03:18Z https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12840866#M3596 <LI-CODE lang="general">region.BooleanOperation(BooleanOperationType.BoolUnite, otherregion);</LI-CODE> <P>&nbsp;</P> <P>This is what I use to unite many regions:</P> <LI-CODE lang="general"> var regions = Region.CreateFromCurves(polys); var overall = new DBObjectCollection(); foreach (Region reg in regions) { try { regions.Remove(reg); foreach (Region x in regions) { if(!x.IsNull) reg.BooleanOperation(BooleanOperationType.BoolUnite, x); } if (!reg.IsNull) overall.Add(reg); } catch { } } </LI-CODE> Fri, 14 Jun 2024 20:34:51 GMT https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12840866#M3596 Jeff_M 2024-06-14T20:34:51Z https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12844776#M3597 My question is whether there is a way to handle a larger quantity, like 2000, 3000, or 4000, because the way I am doing it now takes a long time. Mon, 17 Jun 2024 17:28:23 GMT https://forums.autodesk.com/t5/net-forum/union-of-region-using-c-net/m-p/12844776#M3597 artillis_prado 2024-06-17T17:28:23Z