In an other thread, I explained that I'm creating a control with a RadGridView which has a "zoom", like this :
And when I use a filter, several rows disappear and the spacing between the rows becomes wrong (the chronology is broken, actually). So I need that the rows stay visible, because the height of every cell is important, but the text must be hidden for that the user sees only the rows which correspond to the criterias.
So now in my code, I continue to use the interface of the filters provided by the RadGridView (the little windows with the field filters and the distinct filters), but I prevent the control to filtering the data, and I call in place an algorithm which applies to each value of my collection an opacity of 0 or 1. This was not very practical to establish but it works...
Sorry for my english.