Check all item in listview with huge list item?

Question

I want to check about 3000 item in listview. This is a bit of code :

foreach (ListViewItem item in this.lvItem.Items)
{
    item.Checked = !item.Ch         


        

Answer 1

I heard a rumor that for large list items a for loop will work faster than a foreach loop try

for(int i = 0; i = < this.1vItem.Items.Count; i++)
{
//Stuff
}