Syn undo

[insmuratturna]

I'm running the "undo" command on a form but the change is visible after closing the form.Can I see when the form is open it

public void Bg_Click(object sender, EventArgs e)
{ doc.SendStringToExecute("_UNDO ", true, false, true);
  doc.SendStringToExecute("1 ", true, false, true);

   doc.TransactionManager.EnableGraphicsFlush(true);
   doc.TransactionManager.QueueForGraphicsFlush();
   Autodesk.AutoCAD.Internal.Utils.FlushGraphics();
   System.Windows.Forms.Application.DoEvents();
}

[hosneyalaa]

• .net forum 
• From here 
• https://forums.autodesk.com/t5/net/bd-p/152