ASPxGridView - How to use the TokenBox in a Filter template to filter grid's TokenBoxColumn

Let's assume that we have a column that contains a list of roles for each user (for example, 1,3,5) . We need to show corresponding role names (Administrator, Developer, etc.) in the column and allow end-users to filter this column so that the grid shows all the users belonging to any of these roles. This example demonstrates how to implement it.  

See Also:
ASPxGridView - How to filter a column via ASPxTokenBox and allow selection of the filter operator