Revit.SDK.Samples.TagBeam.CS.TagBeamData.CreateTag C# (CSharp) Method

        public void CreateTag(TagMode tagMode,
            FamilySymbolWrapper tagSymbol, bool leader,
            TagOrientation tagOrientation)
        {
            foreach(FamilyInstance beam in m_beamList)
            {
                //Get the start point and end point of the selected beam.
                Autodesk.Revit.DB.LocationCurve location = beam.Location as Autodesk.Revit.DB.LocationCurve;
                Autodesk.Revit.DB.Curve curve = location.Curve;

                Transaction t = new Transaction(m_revitDoc.Document);
                t.Start("Create new tag");
                //Create tag on the beam's start and end.
                IndependentTag tag1 = m_docCreator.NewTag(
                    m_view, beam, leader, tagMode, tagOrientation, curve.get_EndPoint(0));
                IndependentTag tag2 = m_docCreator.NewTag(
                    m_view, beam, leader, tagMode, tagOrientation, curve.get_EndPoint(1));

                //Change the tag's object Type.
                tag1.ChangeTypeId(tagSymbol.FamilySymbol.Id);
                tag2.ChangeTypeId(tagSymbol.FamilySymbol.Id);
                t.Commit();
            }
        }

        /// <summary>
        /// Create tags on beam's start and end.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void okButton_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.tagSymbolComboBox.SelectedItem != null)
                {
                    m_dataBuffer.CreateTag((TagMode)tagComboBox.SelectedItem,
                                           tagSymbolComboBox.SelectedItem as FamilySymbolWrapper,
                                           this.leadercheckBox.Checked,
                                           (TagOrientation)tagOrientationComboBox.SelectedItem);
                }
                else
                {
                    throw new ApplicationException("No tag type selected.");
                }

                this.Close();
            }
            catch (Exception ex)
            {
                TaskDialog.Show("Revit", ex.Message);
            }
        }