TypedValue filter by color with bylayer`

[absStructural]

I have a filter set up like this:

TypedValue[] filter =

newTypedValue[]

{

   newTypedValue((int)DxfCode.Operator, "<OR"), // crossframe or bearing color

   newTypedValue((int)DxfCode.Color, Autodesk.AutoCAD.Interop.Common.ACAD_COLOR.acRed),

   newTypedValue((int)DxfCode.Color, Autodesk.AutoCAD.Interop.Common.ACAD_COLOR.acWhite),

   newTypedValue((int)DxfCode.Operator, "OR>")

};

I then create a SelectionFilter with this TypedValue array, and use Editor.SelectAll(selectionFilter) to retrieve the desired entities.

The goal is to select all entities that are either red or white.  This works fine - except I also want to include entities that are ByLayer - if the color of the layer is red or white.

Is there any way to do this in a single filter? 

[_gile · Accepted solution]

Hi,

You can try this way:

string layers = string.Empty;
using (Transaction tr = db.TransactionManager.StartOpenCloseTransaction())
{
    LayerTable lt = (LayerTable)tr.GetObject(db.LayerTableId, OpenMode.ForRead);
    foreach (ObjectId id in lt)
    {
        LayerTableRecord ltr = (LayerTableRecord)tr.GetObject(id, OpenMode.ForRead);
        if (ltr.Color == Color.FromColorIndex(ColorMethod.ByAci, 1) ||
            ltr.Color == Color.FromColorIndex(ColorMethod.ByAci, 7))
        {
            layers += ltr.Name + ",";
        }
    }
}

 TypedValue[] filter = 
 { 
    new TypedValue(-4, "<OR"),
    new TypedValue(62, 1),
    new TypedValue(62, 7),
    new TypedValue(-4, "<AND"),
    new TypedValue(62, 256),
    new TypedValue(8, layers),
    new TypedValue(-4, "AND>"),
    new TypedValue(-4, "OR>")
};

[absStructural]

Not quite as straight forward as I would like - but that works.

Thanks!

[BKSpurgeon]

For future readers, this is a much better way:

http://through-the-interface.typepad.com/through_the_interface/2008/07/conditional-sel.html

and also here:

http://help.autodesk.com/view/ACD/2016/ENU/?guid=GUID-04B8192E-B0D8-4731-A882-AE92B7CFAE22

hope this helps

[_gile]

---

BKSpurgeon a écrit :

For future readers, this is a much better way:

http://through-the-interface.typepad.com/through_the_interface/2008/07/conditional-sel.html

---

Why do you think it's a "much better way" ? It seems to me it's exactly the same way using relational groups...

[k005]

If we add a third color in this code, how should we change the code?

and it doesn't select the colors that are Bylayer in this filter. Where does this originate from?

I am attaching the sample file.

[k005]

With this selection filter, colors belonging to the 62 code are selected. But Bylayer ones are not selected..! where is

wrong with this code? ?

Is there anyone who can help?

Thank you.

      TypedValue[] acTypValAr =
                {
                 new TypedValue(-4, "<OR"),
                 new TypedValue(62, ilkRenk),
                 new TypedValue(62, ikinciRenk),
                 new TypedValue(62, ucuncuRenk),
                 new TypedValue(-4, "<AND"),
                 new TypedValue(62, 256),
                 new TypedValue(8, layers),
                 new TypedValue(-4, "AND>"),
                 new TypedValue(-4, "OR>")
                };