.NET API Catalog

netcoreapp3.0
    namespace System.Windows.Forms
{
    [ClassInterface(ClassInterfaceType.AutoDispatch)]
    [ComVisible(true)]
    [DefaultEvent("ButtonClick")]
    [DefaultProperty("Buttons")]
    [Designer("System.Windows.Forms.Design.ToolBarDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
    public class ToolBar : Control
    {
        [Browsable(false)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        public override RightToLeft RightToLeft { get; set; }
    }
}

Information specific to `netcoreapp3.0`
.NET Core	3.0
.NET Framework	1.01.12.03.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Assembly	System.Windows.Forms , Version=4.0.0.0, PublicKeyToken=b77a5c561934e089
Referencing	Requires all: You need to build and run on Windows. Your project needs to set `<UseWindowsForms>True</UseWindowsForms>`.
Platform Restrictions	This framework does not have platform annotations.

Built-in API
Package-provided API