Question

我想在确切的交货日期前30天通知，但我不知道如何。我正在使用datagridview来显示数据库中的数据。

我想创建一个倒计时，每天都会通知我，直到确切的交付日期。

DateTime answer = today.AddDays(30);`enter code here`
string convert1 = today.ToString("MM/dd/yy"); //Today's date
string convert = answer.ToString("MM/dd/yy"); //Today + 30days

sqlcon.Open();
command.Connection = sqlcon;

command.CommandText = "SELECT [ID], [Delivery Date], [Delivery Time], [Delivery Description] From Delivery WHERE [Delivery Date] < '" + convert + "' ORDER BY [Delivery Date] ASC";
using (SqlDataReader reader = command.ExecuteReader())
{
    while (reader.Read())
    {
        if (today.Date < answer.Date)
        {
            MessageBox.Show("Upcoming Delivery in less than 30 days!" + "\n\n*Delivery Date:\n" + "     " + reader["Delivery Date"].ToString() + "\n\n*Delivery Description:\n" + "     " + reader["Delivery Description"].ToString());
         }
     }
 }
 sqlcon.Close();

Answer 1

您可以创建Windows服务，定期检查要通知的实体。 Topshelf（https://github.com/Topshelf/Topshelf）是使用Windows服务的正确方法。

我如何创建交货日期通知程序

1 个答案: