而試圖插入我裝盤將數據插入到我的微軟數據庫的數據

Question

但這運行時錯誤被拋出

「附近有語法錯誤‘日期’運行時錯誤。\ r \ nMust聲明標量變量\「@ \」。「

在這一行 Cmd.ExecuteNonQuery();

這裏是我的代碼

 public void InsertInventory(DateTime _date, int _customer_Id, 
          int _employee_Id, List<int> _product_Id, 
          List<int> _amountSold, 
          List<int> _unitPrice, List<int> _totalPrice) 
    { 
     Connection_String = @"Data Source=MOSTAFA-PC;Initial Catalog=" 
          + "Sales and Inventory System" 
          + ";Integrated Security=TrueData Source=MOSTAFA-PC;Initial Catalog=" 
          + "Sales and Inventory System" 
          + ";Integrated Security=True;"; 

     Query = "insert into Inventory" + 
        "(Customer_Id,Employee_Id,Product_Id,[Date],[Amount Sold],[Unit Price],[Total Price])" + 
        "values (@customer_id,@Employee_id,@Product_id,@[Date],@[Amount_Sold],@[Unit_Price],@[Total_Price])"; 

     using (Con = new SqlConnection(Connection_String)) 
     using (Cmd = new SqlCommand(Query, Con)) 
     { 
      Cmd.Parameters.Add("@customer_id", SqlDbType.Int); 
      Cmd.Parameters.Add("@Employee_id", SqlDbType.Int); 
      Cmd.Parameters.Add("@Product_id", SqlDbType.Int); 
      //Cmd.Parameters.Add("@[Date]", SqlDbType.NVarChar); 
      Cmd.Parameters.Add("@[Date]", SqlDbType.Date); 
      Cmd.Parameters.Add("@[Amount_sold]", SqlDbType.Int); 
      Cmd.Parameters.Add("@[Unit_Price]", SqlDbType.Decimal); 
      Cmd.Parameters.Add("@Total_Price", SqlDbType.Decimal); 

      Cmd.Connection = Con; 
      Con.Open(); 

      int RecordToAdd = _product_Id.Count; 

      for (int i = 0; i < RecordToAdd; i++) 
      { 
       Cmd.Parameters["@customer_id"].Value = _customer_Id; 
       Cmd.Parameters["@Employee_id"].Value = _employee_Id; 
       Cmd.Parameters["@[Date]"].Value = _date; 
       Cmd.Parameters["@Product_id"].Value = _product_Id[i]; 
       Cmd.Parameters["@[Amount_sold]"].Value = _amountSold[i]; 
       Cmd.Parameters["@[Unit_Price]"].Value = _unitPrice[i]; 
       Cmd.Parameters["@Total_Price"].Value = _totalPrice[i]; 
       Cmd.ExecuteNonQuery(); 
      } 
     } 

我應該怎麼辦

？

Answer 1

對於參數名稱，您不需要用[]包裝，只需使用@Date，@AmountSold，@UnitPrice，@TotalPrice。只要確保你在聲明和參數列表中修復了它們