Update an Object using a dictionary with the properties to change

ObjectUpdater2.cs

public static void UpdateFromText<T>(this T target, IDictionary<string, object> changes)
  where T : class
{

  foreach (var kvp in changes)
  {
    var propsTarget = typeof(T).GetProperty(kvp.Key, BindingFlags.IgnoreCase | BindingFlags.Public  |  BindingFlags.Instance);
    if (propsTarget == null)
      //throw new ArgumentOutOfRangeException(nameof(changes), $"{kvp.Key} is not a property of the target");
      continue;

    try
    {
      var newVal = kvp.Value;
      var newStr = newVal as string;

      if (newStr == "null" || newVal == null)
      {
        if (propsTarget.PropertyType.IsClass || IsNullable(propsTarget))
          propsTarget.SetValue(target, null);
      }
      else
      {
        var targetType = IsNullable(propsTarget)
          ? propsTarget.PropertyType.GenericTypeArguments[0]
          : propsTarget.PropertyType;
        if (targetType == typeof(bool))
        {
          char chr = Char.ToUpperInvariant(newStr[0]);
          if (chr == 'Y')
          {
            propsTarget.SetValue(target, true);
            continue;
          }
          else if (chr == 'N')
          {
            propsTarget.SetValue(target, false);
            continue;
          }
        }

        object value = Convert.ChangeType(newVal, targetType);
        propsTarget.SetValue(target, value);
      }
    }
    catch (Exception ex)
    {
      throw new ArgumentOutOfRangeException(
        $"{kvp.Value} is not assignable to {propsTarget.PropertyType.Name} (Property {kvp.Key})", ex);
    }
  }
}

public static bool IsNullable(PropertyInfo type) =>
  type.PropertyType.IsConstructedGenericType && type.PropertyType.Name == "Nullable`1";
}