Code snippet for reflecting on a class and appending properties to a StringBuilder. For System types, this will ignore appending properties (e.g. the Length property won't be appended for System.String).

PropertyReflection.cs

private string GetModelDescription()
{
    var sb = new StringBuilder();
    var type = typeof(YourType);
    sb.AppendFormat("{0} ({1})\n", type.Name, type.UnderlyingSystemType.ToString());
    AppendPropertiesDescription(type, sb, "  ");
    return sb.ToString();
}

private void AppendPropertiesDescription(Type type, StringBuilder sb, string prefix)
{
    type.GetProperties()
        .ForEach(prop => {
            var underlyingType = prop.PropertyType.UnderlyingSystemType;

            // Types we don't need to append
            if (!underlyingType.IsGenericType && prop.ReflectedType.Namespace.StartsWith("System"))
                return;

            // Append type
            sb.AppendFormat("{0}{1} ({2})\n", prefix, prop.Name, underlyingType.ToString());
            if (underlyingType.IsGenericType)
            {
                // Type has a generic (e.g. List<object>).
                underlyingType.GenericTypeArguments
                    .ForEach(genType => AppendPropertiesDescription(genType.UnderlyingSystemType, sb, prefix + "  "));
            }
            else
            {
                // Recursive call to append properties of property.
                AppendPropertiesDescription(prop.PropertyType.UnderlyingSystemType, sb, prefix + "  ");
            }
        });
}