// Licensed to the .NET Foundation under one or more agreements. // The .NET Foundation licenses this file to you under the MIT license. // See the LICENSE file in the project root for more information. /*============================================================ ** ** Interface: ICustomFormatter ** ** ** Purpose: Marks a class as providing special formatting ** ** ===========================================================*/ namespace System { public interface ICustomFormatter { string Format(string? format, object? arg, IFormatProvider? formatProvider); } }