public UsageDataDisplay(IInternetData usageData) { InitializeComponent(); foreach (var day in usageData.GetDaysOfUsage()) { var usg = new ListViewItem(ToMbGb(day.TotalUsed)); usg.SubItems.Add(ToMbGb(day.TotalDownload)); usg.SubItems.Add(ToMbGb(day.TotalUpload)); usg.SubItems.Add(day.Date.ToString("dd/MM/yyyy")); usg.SubItems.Add(ToMbGb(day.TotalAllowed)); listViewUsageData.Items.Add(usg); } }