BIMSource.SPWriter.Commands.AddParameters C# (CSharp) Method

        private bool AddParameters()
        {
            Document doc = m_app.ActiveUIDocument.Document;
              if (null == doc)
              {
            MessageBox.Show("There's no available document.");
            return false;
              }

              if (!doc.IsFamilyDocument)
              {
            MessageBox.Show("The active document is not a family document.");
            return false;
              }

              ParameterAssigner pa = new ParameterAssigner(m_app.Application, doc);
              // the parameters to be added are defined and recorded in a text file, read them from that file and load to memory
              bool succeeded = pa.LoadSharedParameterFile();
              if (!succeeded)
              {
            return false;
              }

              Transaction t = new Transaction(doc, "Bind Shared Parameters");
              t.Start();
              succeeded = pa.BindSharedParameters();
              if (succeeded)
              {
            t.Commit();
            return true;
              }
              else
              {
            t.RollBack();
            return false;
              }
        }