ArcGIS Pro新建一个布局

https://developers.arcgis.com/labs/pro/build-a-map-layout/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ArcGIS.Core.CIM;
using ArcGIS.Core.Data;
using ArcGIS.Core.Geometry;
using ArcGIS.Desktop.Catalog;
using ArcGIS.Desktop.Core;
using ArcGIS.Desktop.Editing;
using ArcGIS.Desktop.Extensions;
using ArcGIS.Desktop.Framework;
using ArcGIS.Desktop.Framework.Contracts;
using ArcGIS.Desktop.Framework.Dialogs;
using ArcGIS.Desktop.Framework.Threading.Tasks;
using ArcGIS.Desktop.Mapping;







using System.Windows.Input;


using System.Windows.Media;

using System.Windows.Media.Imaging;


using ArcGIS.Desktop.Core.Events;

using ArcGIS.Core.Events;

using ArcGIS.Desktop.Mapping.Events;


using ArcGIS.Desktop.Layouts;








namespace ylsetpro
{
    internal class btnAddData : Button
    {

        private async Task<Layout> createLayout()
        {
            // Create a layout which will be returned from the QueuedTask
            Layout newLayout = await QueuedTask.Run<Layout>(()=>
            {
                // Create a new CIM page
                CIMPage newPage = new CIMPage();

                // Add properties
                newPage.Width = 17;
                newPage.Height = 11;
                newPage.Units = LinearUnit.Inches;

                // Add rulers
                newPage.ShowRulers = true;
                newPage.SmallestRulerDivision = 0.5;

                // Apply the CIM page to a new layout and set name
                newLayout = LayoutFactory.Instance.CreateLayout(newPage);
                newLayout.SetName("Census Data");
                return newLayout;


            });
            return newLayout;

        }

        protected override void OnClick()
        {

            createLayout();




        }
    }
}