net11 
namespace System.Windows.Forms.Design
{
    [Guid("06A9C74B-5E32-4561-BE73-381B37869F4F")]
    public interface IUIService
    {
        void ShowError(string message);
    }
}
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.NET
5.06.07.08.09.0
.NET Core
3.03.1
.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
Information specific to net11
Assembly

System.Windows.Forms , Version=1.0.5000.0, PublicKeyToken=b77a5c561934e089

Referencing

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

Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API