簡單的日期計算在C＃

Question

你恰巧有一個示例代碼如何從明天或2天減去一天？然後我會根據它的保留值乘以一個數字。我盤算如何操作的賓館檢查和詢問，當客戶簽出顯示其價格，因此價格將準備在在

Answer 1

檢查這應有助於：

 var rate = 100.00; 
     var totalDays = 2; 
     var startDate = DateTime.Today.AddDays(-totalDays); 
     var total = totalDays * rate; 

     Console.WriteLine("rate: {0} totalDays : {1} startDate: {2} total: {3}", 
      rate, totalDays, startDate, total);