Topic: How to update attribute inside mleader?

[aiman]

I have lots multileaders with block and attributes in my drawing.
What I want to do is to go through all objects in the drawing and then update the attribute of multileaders.
I know C# a little, here is my code, does anybody know how to do this?

Code: [Select]

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;

namespace Update_Mleader
{
    public class Update_Mleader
    {
        [CommandMethod("UpdateMleaderAttr")]
        public void UpdateMleader()
        {
            Document doc = Application.DocumentManager.MdiActiveDocument;
            Database db = doc.Database;
            Editor ed = doc.Editor;

            Transaction tr = db.TransactionManager.StartTransaction();
            using (tr)
            {
                BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
                BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForRead);

                foreach (ObjectId entId in btr)
                {
                   
                    Entity ent = tr.GetObject(entId, OpenMode.ForRead) as Entity;
                    if (ent != null)
                    {
                        if (ent.GetType() == typeof(MLeader))
                        {
                            // how to update the attribute of the mleader?
                            // example, if the attribute Tag is "XCODE"
                            // and i want to update the TextString to "100"
                        }
                    }
                }
                tr.Commit();
            }
            ed.Regen();
        }
    }
}

[BlackBox]

Rather than iterating the entire Database, consider using the PromptSelectionOptions to iterate a valid selection set based on a specified section filter.

Not sure if there's a Method to handle changes globally, otherwise you'd need to iterate each entity to modify nested entities as applicable (I.e, FieldCode, attribute's TextString, etc). 

HTH

[fixo]

I have lots multileaders with block and attributes in my drawing.
What I want to do is to go through all objects in the drawing and then update the attribute of multileaders.
I know C# a little, here is my code, does anybody know how to do this?

                            // how to update the attribute of the mleader?
                            // example, if the attribute Tag is "XCODE"
                            // and i want to update the TextString to "100"
                   

Try this code:
http://www.acadnetwork.com/topic-210.msg381.html#msg381

~'J'~