OleAutBinder.cs

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using System.Globalization;
using System.Runtime.InteropServices;
using Microsoft.Win32;
 
namespace System;
 
internal sealed class OleAutBinder : DefaultBinder
{
    public override object ChangeType(object value, Type type, CultureInfo cultureInfo)
    {
        Variant source = new Variant(value);
        if (cultureInfo == null)
        {
            cultureInfo = CultureInfo.CurrentCulture;
        }
        if (type.IsByRef)
        {
            type = type.GetElementType();
        }
        if (!type.IsPrimitive && type.IsInstanceOfType(value))
        {
            return value;
        }
        Type type2 = value.GetType();
        if (type.IsEnum && type2.IsPrimitive)
        {
            return Enum.Parse(type, value.ToString());
        }
        try
        {
            return OAVariantLib.ChangeType(source, type, 16, cultureInfo).ToObject();
        }
        catch (NotSupportedException)
        {
            throw new COMException(SR.Interop_COM_TypeMismatch, -2147352571);
        }
    }
}