Newtonsoft.Json\JsonConverterAttribute.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Newtonsoft.Json.Utilities;

using System.Globalization;

namespace Newtonsoft.Json

{

  /// <summary>

  /// Instructs the <see cref="JsonSerializer"/> to use the specified <see cref="JsonConverter"/> when serializing the member or class.

  /// </summary>

  [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property | AttributeTargets.Class, AllowMultiple = false)]

  public sealed class JsonConverterAttribute : Attribute

  {

    private readonly Type _converterType;

    /// <summary>

    /// Gets the type of the converter.

    /// </summary>

    /// <value>The type of the converter.</value>

    public Type ConverterType

    {

      get { return _converterType; }

    }

    /// <summary>

    /// Initializes a new instance of the <see cref="JsonConverterAttribute"/> class.

    /// </summary>

    /// <param name="converterType">Type of the converter.</param>

    public JsonConverterAttribute(Type converterType)

    {

      if (converterType == null)

        throw new ArgumentNullException("converterType");

      _converterType = converterType;

    }

    internal static JsonConverter CreateJsonConverterInstance(Type converterType)

    {

      try

      {

        return (JsonConverter)Activator.CreateInstance(converterType);

      }

      catch (Exception ex)

      {

        throw new Exception("Error creating {0}".FormatWith(CultureInfo.InvariantCulture, converterType), ex);

      }

    }

  }

}