private void IssuesList_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { if(IssuesList.Rows.Count>0 && e.RowIndex>=0 && e.RowIndex<IssuesList.Rows.Count) { var row = IssuesList.Rows[e.RowIndex]; if (RowToUUID.ContainsKey(row)) { Guid uuid = RowToUUID[row]; editIssue(uuid); } } }