public ExpenseView(DBDataOperation myBd, System.Windows.Window w2) { bd = myBd; ExpenseGuide = bd.GetEXPENSE_GUIDE(); EXPENSEDate = DateTime.Now; EXPENSESize = "0"; EXPENSEDate2 = DateTime.Now; EXPENSEDate1 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, 1); ExpenseDataGrid = bd.GetEXPENSESELECT(EXPENSEDate1, EXPENSEDate2, App.id); w = w2; double r = 0; for (int i = 0; i < ExpenseDataGrid.Count; i++) { r += (double)ExpenseDataGrid[i].expense_size; } EXPENSESum = "Итого " + r.ToString(); }