.NET API Catalog

Form

net9.0-windows10.0.22621
    namespace System.Windows.Forms
{
    [DefaultEvent("Load")]
    [Designer("System.Windows.Forms.Design.FormDocumentDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(IRootDesigner))]
    [DesignerCategory("Form")]
    [DesignTimeVisible(false)]
    [InitializationEvent("Load")]
    [ToolboxItem(false)]
    [ToolboxItemFilter("System.Windows.Forms.Control.TopLevel")]
    public class Form : ContainerControl
    {
        [Experimental("WFO5001", UrlFormat = "https://aka.ms/winforms-warnings/{0}")]
        public event EventHandler? FormCaptionBackColorChanged;
    }
}

Information specific to `net9.0`
.NET	9.0
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	System.Windows.Forms , Version=9.0.0.0, PublicKeyToken=b77a5c561934e089
Referencing	Your project needs to set `<UseWindowsForms>True</UseWindowsForms>`.
Preview	WFO5001: This API is marked as experimental.(more details)
Platform Restrictions	The event adder is only supported on the following platforms: Windows >= 6.1 The event remover is only supported on the following platforms: Windows >= 6.1

Built-in API
Package-provided API