How can I change opacity of first listview element?

问题

im trying to change opacity of first ListView element, but i am not getting the right way to implemet it ; Can you please give some suggestions ?

display.Opacity = 0.5;
                foreach (Common trigger in display.Items)
                {
                    if (trigger.Image_Name == "First")
                    {
                        trigger.Opacity = 1;
                    }
                }

where display is my ListView

回答1:

When you change the opacity property of ListView it does not affect to it's items separately(opacity changes for ListView as a whole). If you want to set all items opacity to 0.5 except one, try to do something like this

for(int i=1; i<display.Items.Count;i++)
  display.Items[i].Opacity = 0.5;

来源：https://stackoverflow.com/questions/17993912/how-can-i-change-opacity-of-first-listview-element