SchematicApplication.CreateNewDocument.OnClick C# (CSharp) Method

    public override void OnClick()
    {
      IMapControl3 mapControl = null;

      //get the MapControl from the hook in case the container is a ToolbarControl
      if (m_hookHelper.Hook is IToolbarControl)
      {
        mapControl = (IMapControl3)((IToolbarControl)m_hookHelper.Hook).Buddy;
      }
      //In case the container is MapControl
      else if (m_hookHelper.Hook is IMapControl3)
      {
        mapControl = (IMapControl3)m_hookHelper.Hook;
      }
      else
      {
        MessageBox.Show("Active control must be MapControl!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
        return;
      }

      //check to see if there is an active edit session and whether edits have been made
      DialogResult result;
      IEngineEditor engineEditor = new EngineEditorClass();

      if ((engineEditor.EditState == esriEngineEditState.esriEngineStateEditing) && (engineEditor.HasEdits() == true))
      {
        result = MessageBox.Show("Would you like to save your edits", "Save Edits", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);

        switch (result)
        {

          case DialogResult.Cancel:
            return;

          case DialogResult.No:
            engineEditor.StopEditing(false);
            break;

          case DialogResult.Yes:
            engineEditor.StopEditing(true);
            break;

        }
      }

      //allow the user to save the current document
      DialogResult res = MessageBox.Show("Would you like to save the current document?", "AoView", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
      if (res == DialogResult.Yes)
      {
        //launch the save command
        ICommand command = new ControlsSaveAsDocCommandClass();
        command.OnCreate(m_hookHelper.Hook);
        command.OnClick();
      }

      //create a new Map
      IMap map = new MapClass();
      map.Name = "Map";

      //assign the new map to the MapControl
      mapControl.DocumentFilename = string.Empty;
      mapControl.Map = map;
    }

        private void menuNewDoc_Click(object sender, EventArgs e)
        {
            //execute New Document command
            ICommand command = new CreateNewDocument();

            command.OnCreate(m_mapControl.Object);
            command.OnClick();
        }