ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / Layout Class / SetPage Method / SetPage(CIMPage,Boolean) Method
CIMPage
Scale the elements to fit the new page size
Example

In This Topic
    SetPage(CIMPage,Boolean) Method
    In This Topic
    Applies the changes made to a modified CIMPage to the layout. This method must be called on the MCT. Use QueuedTask.Run.
    Syntax
    public void SetPage( 
       CIMPage page,
       bool resizeElements
    )
    Public Overloads Sub SetPage( _
       ByVal page As CIMPage, _
       ByVal resizeElements As Boolean _
    ) 

    Parameters

    page
    CIMPage
    resizeElements
    Scale the elements to fit the new page size
    Exceptions
    ExceptionDescription
    This method must be called within the lambda passed to QueuedTask.Run.
    Example
    Change the layout page size
    //Change the layout page size.
    
    //Reference the layout project item
    LayoutProjectItem lytItem = Project.Current.GetItems<LayoutProjectItem>()
                             .FirstOrDefault(item => item.Name.Equals("MyLayout"));
    if (layoutItem != null)
    {
      await QueuedTask.Run(() =>
      {
        //Get the layout
        Layout lyt = lytItem.GetLayout();
        if (lyt != null)
        {
          //Change properties
          CIMPage page = lyt.GetPage();
          page.Width = 8.5;
          page.Height = 11;
    
          //Apply the changes to the layout
          lyt.SetPage(page);
        }
      });
    }
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.1 or higher.
    See Also