// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. /*============================================================ ** ** Interface: ICustomFormatter ** ** ** Purpose: Marks a class as providing special formatting ** ** ===========================================================*/ namespace System { using System; using System.Runtime.Serialization; [System.Runtime.InteropServices.ComVisible(true)] public interface ICustomFormatter { // Interface does not need to be marked with the serializable attribute String Format (String format, Object arg, IFormatProvider formatProvider); } }