// 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 ** ** ===========================================================*/ using System; namespace System { public interface ICustomFormatter { // Interface does not need to be marked with the serializable attribute string Format(string format, object arg, IFormatProvider formatProvider); } }