An error occurs when mapping a Dictionary to another Dictionary in HigLabo.Mapper.

[yasee]

Bug Report

Summary

An error occurs when mapping a Dictionary to another Dictionary in HigLabo.Mapper.

Test Code

using HigLabo.Core;

class Program
{
    static void Main(string[] args)
    {
        var d = new Dictionary<int, string>();
        d.Add(100, "Test");
        d.Add(200, "Test2");
        var dto = new Dictionary<int, string>();
        ObjectMapper.Default.Map(d, dto);
    }
}

using HigLabo.Core;

class Program
{
    class Cls1
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

    class Cls1Dto
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

    static void Main(string[] args)
    {
        var d = new Dictionary<int, Cls1>();
        d.Add(100, new Cls1 { Id = 100, Name = "Test" });
        d.Add(200, new Cls1 { Id = 200, Name = "Test2" });
        var dto = new Dictionary<int, Cls1Dto>();
        ObjectMapper.Default.Map(d, dto);
    }
}

Error

Unhandled exception. System.InvalidOperationException: No method 'Add' on type 'System.Collections.Generic.Dictionary`2+KeyCollection[System.Int32,System.String]' is compatible with the supplied arguments.
   at System.Linq.Expressions.Expression.FindMethod(Type type, String methodName, Type[] typeArgs, Expression[] args, BindingFlags flags)
   at System.Linq.Expressions.Expression.Call(Expression instance, String methodName, Type[] typeArguments, Expression[] arguments)
   at HigLabo.Core.ObjectMapper.CreateMapCollectionExpression(MapParameter parameter, CompileState state)
   at HigLabo.Core.ObjectMapper.CreateFunctionExpression(Type sourceType, Type targetType)
   at HigLabo.Core.ObjectMapper.CreateMapMethod(Type sourceType, Type targetType)
   at HigLabo.Core.ObjectMapper.Map[TSource,TTarget](TSource source, TTarget target)
   at Program.Main(String[] args) in /path/to/projects/higmlabo_mapper_test/SimpleApp/Program.cs:line 11

version

HigLabo.Mapper: 2.2.0.1

[higty]

Thank you for your reproduction code!
I'll check it☺

[higty]

For your workaround.

foreach (var item in d.Keys)
{
dto[item] = d[item];
}

I considering to add or not to this feature.

[yasee]

foreach (var item in d.Keys)
{
    dto[item] = d[item];
}

I think that approach alone is insufficient to make the Dictionary keys match completely.
Also, when the Value is a class object, I want to use the Map function.