Selection set manipulation

[amaser]

i am trying to modify properties of multiple mtext objects. i have a selection set filter, so only mtext objects are selected by the user. however, when i try and use a For-Each structure,
the objects in the selection set are all of type OBJECT, when the properties I need to access
are used when objects are of type MTEXT. how do i specify MTEXT properties on objects of type OBJECT, or how do i modify the selection set so the items selected are MTEXT objects, or how else do i accomplish this?

[Ed Jobe]

Its a good idea to show your code when asking for help with it.

[_gile]

Hi

You can get an ObjectId array from your selection set, then you have to get the Mtext object using a transaction

using (Transaction tr = db.TransactionManager.StartTransaction())
 {
    foreach (ObjectId id in selSet.GetObjectId())
    {
        Mtext mt = tr.GetObject(id, OpenMode.ForWrite) as Mtext
        if (mt != null)
        {
            // do your stuff here
        }
    }
    tr.Commit();
}

[amaser]

Hi

You can get an ObjectId array from your selection set, then you have to get the Mtext object using a transaction

using (Transaction tr = db.TransactionManager.StartTransaction())
 {
    foreach (ObjectId id in selSet.GetObjectId())
    {
        Mtext mt = tr.GetObject(id, OpenMode.ForWrite) as Mtext
        if (mt != null)
        {
            // do your stuff here
        }
    }
    tr.Commit();
}

that did the trick, though it took me a minute to convert to VB.NET, but that's my fault. Thanks for the help

[Coolmo]

Just to be clear (for myself and hopefully others), and PLEASE correct me if I'm wrong, but was the original problem the fact the selection set was still just a collection of objects? Even though the filter only allowed for MTEXT objects to be gathered into the set, they're still just objects in a selection set. You still have to go through each object in the set and ask if it's an MTEXT object. If it is, you can then start manipulating the object as an MTEXT object.