net9.0-windows10.0.22621 
namespace System.Windows.Controls.Primitives
{
    [Localizability(LocalizationCategory.Text)]
    [TemplatePart(Name = "PART_ContentHost", Type = typeof(FrameworkElement))]
    public abstract class TextBoxBase : Control
    {
        public event RoutedEventHandler SelectionChanged;
    }
}
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.NET 5.06.07.08.09.0
.NET Core 3.03.1
.NET Framework 3.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Information specific to net9.0
Platforms This API is only available when you target a specific platform:
Windows 7.08.010.0.1776310.0.1836210.0.1904110.0.2034810.0.2200010.0.22621
Information specific to net9.0-windows10.0.22621
Assembly

PresentationFramework , Version=9.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs to set <UseWPF>True</UseWPF>.

Platform Restrictions

The event adder is only supported on the following platforms:

  • Windows

The event remover is only supported on the following platforms:

  • Windows
  • Built-in API
  • Package-provided API