Hi Janusz Oldakowski,
Thank you for the questions.
You have understood correctly that you need two classes in order to be able to fully customize what data can be displayed in the visual list items. Consider the data items to be a projection of your core data and the visual items to simply be the visual representation of this projection. For example if you have 10 columns in your data table and you want to display only 4 of these columns you need a new data item, that will contain 4 properties that correspond to the columns and a new visual item that will be synchronized with these 4 properties by presenting them with appropriate UI widgets in the appropriate layout.
Please be more specific, which parts of the code example do you consider wrong and/or confusing and what part of it is missing? Your feedback will greatly be appreciated in resolving this misunderstanding.
I am looking forward to your reply.
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