ArcGIS Pro layout clone

1. Make a new layout

2. Copy the layout to be "duplicated" (this is the Clone method)

3. Replace the layout URI of the copy with the URI of the new layout (in other words, the new layout acts as a placeholder)

4. Set the copy/clone back as the new layout definition

 

Step 3 is the crucial step. I have posted the code below. I'd recommend running it in the debugger so you can grok what's going on

 

internal class DuplicateLayout : Button
  {
    protected async override void OnClick() {
      var layoutView = LayoutView.Active;
      try {
        if (layoutView?.Layout != null) {
          await layoutView.Layout.Duplicate();
        }
      }
      catch (Exception ex) {
        System.Diagnostics.Debug.WriteLine(ex);
      }
      
    }
  }
 

public static class LayoutExtensions
  {

    public static async Task Duplicate(this Layout layout) {
      if (layout == null)
        throw new ArgumentNullException(nameof(layout), "layout cannot be null");
      var layout_clone = await layout.CloneAsync();
      FrameworkApplication.Panes.CreateLayoutPaneAsync(layout_clone);
    }

    public static Task<Layout> CloneAsync(this Layout layout) {
      return QueuedTask.Run(() => {
        return Clone(layout);
      });
    }

    //Must be called on the QueuedTask
    public static Layout Clone(this Layout layout)
    {
      var layout_dup = LayoutFactory.Instance.CreateLayout();
      var metadata_uri = layout_dup.GetDefinition().MetadataURI;

      var layout_def = layout.GetDefinition();
      var layout_def_clone = layout_def.Clone() as CIMLayout;
      layout_def_clone.URI = layout_dup.URI;
      layout_def_clone.MetadataURI = metadata_uri;

      layout_dup.SetDefinition(layout_def_clone);
      return layout_dup;
    }
  }
 

public static class CIMExtensions
  {

    public static CIMObject Clone(this CIMObject cimObject)
    {
      var clone = System.Activator.CreateInstance("ArcGIS.Core", cimObject.GetType().ToString()).Unwrap() as CIMObject;
      var stringReader = new StringReader(cimObject.ToXml());
      var xmlReader = new XmlTextReader(stringReader);
      //xmlReader.MoveToContent();
      clone.ReadXml(xmlReader);
      xmlReader.Dispose();
      return clone;
    }


  }
来自：https://community.esri.com/thread/221610-duplicate-existing-layout-arcgis-pro-sdk