hello and good morning

i have a problem regarding about the image. i want to make the image become blur .

i have attach some image for the refer of the image.

also, i have problem about how to clear the listbox. i mean not like this

listbox1.item.clear()

it have to be like when user press the other button, the listbox will automatically clear the display on the listbox

that the problem. hope you guys solved this problem.

thank you