Hi Josef. Your code doesn't work. Visual Studio returns error in var optionCategoryIDs = OptionCategoryInfoProvider.GetProductOptionCategories(skuid, true).Select<OptionCategoryInfo, int>(category => category.CategoryID);
code. skuid unknown.
If I define skuid as integer, Visual Studio returns error in Select. Select method doesn't found in OptionCategoryInfo.
Is it possible to ask you about whole code?
Thank you.
Martin.