AutoCAD .NET :: Select Entity With In Line Closed AND Not Using Editor?

I want to load file with database.ReadDwgFile

i dont want use editor (i don't want use CommandFlags.Session)

after the load in the database (see my code for xdb), i want to select all bloc within a closed line entity (within the xdb)

but how to do that whitout editor (editor..SelectWindowPolygon )

here my code for load each file , and mémorize all block for each file
 
Dim CollDocOuvert As New Collection For Each NomFichier In Fenetre.CollFichier 'recherche et extraction des blocs Dim Fichier As New IO.FileInfo(NomFichier) If Fichier.Exists = True Then GestionAUTOCAD.TxtOnLigneCOmmande("Gestion du

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StatusLabelBar is a component of my form for write msg. is use me.refresh and a timer (1s) for refresh my form. (a trick i have found for do this [if you have better trick i take it.])