AutoCAD .NET :: How To Remove User Interaction Part From A Code

I have got this code by KEAN WALMSLEY.His code will ask user to select a block and then list all of selected block's attributes. However, I need to tweak his code a little bit and instead of user interaction, the block has to be selected by its name and through my code.

Here is his code (with slight changes to suit my purpose):

rivate Sub ListAttributes()Dim ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor Dim db As Database = Host Application Services.WorkingDatabaseDim tr As Transaction = db.TransactionManager.StartTransaction() Try Dim filList As TypedValue() = New TypedValue(0) {New TypedValue(CInt(DxfCode.Start), "INSERT")}Dim filter As New SelectionFilter(filList)Dim opts As
[code]....

 Now, I need to change this Sub to a Function as below:

Private Function ListAttributes (blockName As String) As Boolean

The aim is to list all block attributes if the 'blockName' exists in drawing and return True afterwards. Oppositely it should return me False and print nothing to Editor if blockName does not exist.