In my projects I have several ListView .
I ListView I have Checked Boxes ( I have made the CheckBoxes property true in my ListViews.)
I can select multiple items in my ListView.
What i Want to do now is when i select multiple Items i want to marked those items CheckBoxes.

Thanks in advanced.

Check out these ListView methods:

public ListView.SelectedListViewItemCollection SelectedItems { get; }
//or
        public ListView.SelectedIndexCollection SelectedIndices { get; }

//with
        public bool ListViewItem.Checked { get; set; }