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// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using System;
namespace CsvHelper.Configuration.Attributes
{
/// <summary>
/// The constant value that will be used for every record when
/// reading and writing. This value will always be used no matter
/// what other mapping configurations are specified.
/// </summary>
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false, Inherited = true)]
public class ConstantAttribute : Attribute, IMemberMapper, IParameterMapper
{
/// <summary>
/// Gets the constant.
/// </summary>
public object Constant { get; private set; }
/// <summary>
/// The constant value that will be used for every record when
/// reading and writing. This value will always be used no matter
/// what other mapping configurations are specified.
/// </summary>
/// <param name="constant">The constant.</param>
public ConstantAttribute(object constant)
{
Constant = constant;
}
/// <inheritdoc />
public void ApplyTo(MemberMap memberMap)
{
memberMap.Data.Constant = Constant;
memberMap.Data.IsConstantSet = true;
}
/// <inheritdoc />
public void ApplyTo(ParameterMap parameterMap)
{
parameterMap.Data.Constant = Constant;
parameterMap.Data.IsConstantSet = true;
}
}
}
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