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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;
using System.Collections.Generic;
using System.Linq;
namespace CsvHelper.Expressions
{
/// <summary>
/// Writes expando objects.
/// </summary>
public class ExpandoObjectRecordWriter : RecordWriter
{
/// <summary>
/// Initializes a new instance using the given writer.
/// </summary>
/// <param name="writer">The writer.</param>
public ExpandoObjectRecordWriter(CsvWriter writer) : base(writer) { }
/// <summary>
/// Creates a <see cref="Delegate"/> of type <see cref="Action{T}"/>
/// that will write the given record using the current writer row.
/// </summary>
/// <typeparam name="T">The record type.</typeparam>
/// <param name="record">The record.</param>
protected override Action<T> CreateWriteDelegate<T>(T record)
{
Action<T> action = r =>
{
var dict = ((IDictionary<string, object>)r).AsEnumerable();
if (Writer.Configuration.DynamicPropertySort != null)
{
dict = dict.OrderBy(pair => pair.Key, Writer.Configuration.DynamicPropertySort);
}
var values = dict.Select(pair => pair.Value);
foreach (var val in values)
{
Writer.WriteField(val);
}
};
return action;
}
}
}
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