Topic: Regular Expressions

[HD]

Hello,

Does anyone know of a regular expression or wildcard technique that could be used in the snippet below? Where, X is: A, B, C, D, E, or E1

Code: [Select]

BlockTableRecord btr =
     tr.GetObject(bt["BORDER-X"],
     OpenMode.ForRead, false) as BlockTableRecord;


[sinc]

I don't think you can do that.

I think you need to walk the entire Block table, and compare the name of each block in the table to your regex, keeping a collection of the blocks that match.

[Glenn R]

Yep - what sinc said because of AutoCAD's transactional nature (open/close).

[It's Alive!]

What about a selection set? Or maybe you should ignore me 

[sinc]

What about a selection set? Or maybe you should ignore me 

I don't think there's any way of using a selection set to search a block table.

If you want to use something like Editor.SelectAll(), then a selection filter would work for that.

[It's Alive!]

What about a selection set? Or maybe you should ignore me 

I don't think there's any way of using a selection set to search a block table.

If you want to use something like Editor.SelectAll(), then a selection filter would work for that.

Yes, that’s what I had in mind. Maybe something like this

Code: [Select]

     [CommandMethod("test")]
      static public void test()
      {
        Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;

        //filter
        TypedValue[] values = new TypedValue[]
                     {
                        new TypedValue((short)DxfCode.BlockName, "BORDER-*") ,
                     };

        SelectionFilter filter = new SelectionFilter(values);
        PromptSelectionResult result = ed.SelectAll(filter);

        if (result.Status == PromptStatus.OK)
        {

          ObjectId[] idarray = result.Value.GetObjectIds();
          DBObjectCollection dbobjects = new DBObjectCollection();

          AcDb.TransactionManager tm =
          Application.DocumentManager.MdiActiveDocument.Database.TransactionManager;

          Transaction tr = tm.StartTransaction();
          try
          {

            //do something
            foreach (ObjectId id1 in idarray)
            {
              dbobjects.Add(tr.GetObject(id1, OpenMode.ForRead, true));
            }

            tr.Commit();

            ed.WriteMessage(dbobjects.Count.ToString());
          }
          catch (System.Exception ex)
          {
            ed.WriteMessage(ex.Message);
          }
          finally
          {
            tr.Dispose();
          }
        }
      }
    }


[Fatty]

Just a thoughts..
Keep in mind the dynamicblocks,
they will be use now very often 

~'J'~

[sinc]

Just a thoughts..
Keep in mind the dynamicblocks,
they will be use now very often 

What about them?

[sinc]

What about a selection set? Or maybe you should ignore me 

I don't think there's any way of using a selection set to search a block table.

If you want to use something like Editor.SelectAll(), then a selection filter would work for that.

Yes, that’s what I had in mind. Maybe something like this

Just keep in mind that when you use things like Editor.SelectAll(), the selection set is automatically filtered on the current space (modelspace or paperspace).  So it is not necessarily the same thing as searching a block table.

[It's Alive!]

Hi Sinc,

According to the docs, it searches the whole database, as in
acedSSGet("_X",NULL,NULL,NULL,ss) but Maybe I missed somthing.

[sinc]

Where did you see that?

All I saw was that it "selects all items from the screen", which implies that it filters on the currently-active space.

It's a simple enough thing to test, though, by writing a little test program.  I actually find myself doing that a lot, because the developer documentation is so sparse in so many areas.

[It's Alive!]

Where did you see that?

All I saw was that it "selects all items from the screen", which implies that it filters on the currently-active space.

It's a simple enough thing to test, though, by writing a little test program.  I actually find myself doing that a lot, because the developer documentation is so sparse in so many areas.

It’s in the Arx (07) docs; specifically, AutoCAD managed class reference.
I do agree the docs are sparse. I have found it very useful to looks at the unmanaged docs just to see if there’s more info.

[Fatty]

Just a thoughts..
Keep in mind the dynamicblocks,
they will be use now very often 

What about them?

Here is a part of one of my programm
that is not finished yet
Give this a try

~'J'~

[Fatty]

Hello,

Does anyone know of a regular expression or wildcard technique that could be used in the snippet below? Where, X is: A, B, C, D, E, or E1

Code: [Select]

BlockTableRecord btr =
     tr.GetObject(bt["BORDER-X"],
     OpenMode.ForRead, false) as BlockTableRecord;


You can try this filter for selection:

Code: [Select]

"BORDER-[A-E],BORDER-[E#]*"
or this one:

Code: [Select]

"BORDER-[A-E],BORDER-E1"
~'J'~