/// <summary>
/// Converts the given value object to the destination type.
/// </summary>
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException(nameof(destinationType));
}
if (destinationType == UnderlyingType && value != null && NullableType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
return(value);
}
else if (value == null)
{
// Handle our own nulls here
if (destinationType == typeof(string))
{
return(string.Empty);
}
}
else if (UnderlyingTypeConverter != null)
{
return(UnderlyingTypeConverter.ConvertTo(context, culture, value, destinationType));
}
return(base.ConvertTo(context, culture, value, destinationType));
}