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witt
580
Clone ValueList and remove some items
posted

I have two value lists when first one is selected, the other one is loaded without selected element. When I try to remove selectedListItem nothing happens? It looks like list doesn’t recognize that it contains that item?

 

private void laodList(UltraGridRow row,  ValueListItem selectedListItem)

{           

ValueList elementList = (ValueList)row.Cells["Element"].ValueListResolved;                             

 

//clone list

ValueList minMaxList = elementList.Clone();

        

//remove selected element

minMaxList.ValueListItems.Remove(selectedListItem);

                       

row.Cells["MinElement"].ValueList = minMaxList;

           

}

  • 469350
    Offline posted

    minMaxList.ValueListItems.Remove(selectedListItem);

    This code doesn't work because selectedListItem is a ValueListItem in the original list. It does not get removed, because it doesn't exist in the cloned list. The cloned list contains a cloned item with the same values as selectedListItem, but it's not the same item.

  • 580
    Verified Answer
    posted

    I had to find it firts and then delete worked.

    ValueListItem

     

     

    itemToRemove = minMaxList.FindByDataValue(selectedValue);

    if ( itemToRemove != null )

    minMaxList.ValueListItems.Remove(itemToRemove);