我想要一个应用程序,它将使我想起我定期写的内容。
我们将特定的日期添加到最后一天。像这样:
第一天(21.04.2020)+ 1天= 第一提醒(22.04.2020),第一提醒 + 3天= 第二提醒(25.04.2020)
希望您能理解,我的句号是“ 1,3,7,30,90,180,90”]
这里是错误:System.Data.OleDb.OleDbException:'条件表达式中的数据类型不匹配。'
我的C#代码:
con = new OleDbConnection(ConnectionParameter);
cmd = new OleDbCommand();
con.Open();
cmd.Connection = con;
cmd.CommandText = "Insert into remember (subject,dateone,datetwo,datethree,datefour,datefive,datesix,dateseven,dateeight) values (@subject,@one,@two,@three,@four,@five,@six,@seven,@eight)";
cmd.Parameters.AddWithValue("@subject", Convert.ToString(richTextBox3.Text));
cmd.Parameters.AddWithValue("@one", Convert.ToDateTime(dateTimePicker1.Value));
DateTime date2 = dateTimePicker1.Value.AddDays(1);
cmd.Parameters.AddWithValue("@two", date2);
DateTime date3 = date2.AddDays(3);
cmd.Parameters.AddWithValue("@three", date3);
DateTime date4 = date3.AddDays(7);
cmd.Parameters.AddWithValue("@four", date4);
DateTime date5 = date4.AddDays(30);
cmd.Parameters.AddWithValue("@five", date5);
DateTime date6 = date5.AddDays(90);
cmd.Parameters.AddWithValue("@six", date6);
DateTime date7 = date6.AddDays(180);
cmd.Parameters.AddWithValue("@seven", date7);
DateTime date8 = date7.AddDays(90);
cmd.Parameters.AddWithValue("@eight", date8);
cmd.ExecuteNonQuery();
con.Close();
好,我解决了这个问题,我的最后一个代码块
con = new OleDbConnection(ConnectionParameter);
cmd = new OleDbCommand();
con.Open();
cmd.Connection = con;
cmd.CommandText = "Insert into remember (subject,dateone,datetwo,datethree,datefour,datefive,datesix,dateseven,dateeight) values (@subject,@one,@two,@three,@four,@five,@six,@seven,@eight)";
cmd.Parameters.AddWithValue("@subject", Convert.ToString(richTextBox3.Text));
cmd.Parameters.AddWithValue("@one", dateTimePicker1.Value.Date);
DateTime date2 = dateTimePicker1.Value.AddDays(1);
cmd.Parameters.AddWithValue("@two", date2.Date);
DateTime date3 = date2.AddDays(3);
cmd.Parameters.AddWithValue("@three", date3.Date);
DateTime date4 = date3.AddDays(7);
cmd.Parameters.AddWithValue("@four", date4.Date);
DateTime date5 = date4.AddDays(30);
cmd.Parameters.AddWithValue("@five", date5.Date);
DateTime date6 = date5.AddDays(90);
cmd.Parameters.AddWithValue("@six", date6.Date);
DateTime date7 = date6.AddDays(180);
cmd.Parameters.AddWithValue("@seven", date7.Date);
DateTime date8 = date7.AddDays(90);
cmd.Parameters.AddWithValue("@eight", date8.Date);
cmd.ExecuteNonQuery();
con.Close();