ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / StyleProjectItem Class / IsReadOnly Property
Example Version

IsReadOnly Property (StyleProjectItem)
Gets the value which indicates if the StyleProjectItem is read-only.
Syntax
public bool IsReadOnly {get;}
Remarks
Note that the style file cannot be modified if it is not current, even if it is not read-only.
Example
How to determine if a style is read-only
//Pass in the full path to the style file on disk
public async Task<bool> IsReadOnly(string stylePath)
{
  //Add the style to the current project
  await QueuedTask.Run(() => StyleHelper.AddStyle(Project.Current, stylePath));
  StyleProjectItem style = Project.Current.GetItems<StyleProjectItem>().First(x => x.Path == stylePath);

  //returns true if style is read-only
  return style.IsReadOnly;
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also