嗨,我对vb.net有一点问题,不确定要朝哪个方向前进。
程序的前端用于计算某个进程停机时间的秒数。
数据库有下表和示例数据:
状态| startdate |止损|秒
正在运行27/08/2012 11:10:11 27/08/2012 11:10:22 11
在后端,所有即时尝试都是使用日期选择器为日期填充一个带有秒数的标签,在进行查询时我使用datepicker文本并将时间添加到结尾,到没有惊喜它没有工作,也只考虑开始日期,但不是因为我试图在该时间框架内加起来的止损,我希望有人可以提供帮助,这是我在下面尝试的代码:
Dim DTimePicker1 = DateTimePicker1.text & " 11:00:00"
Dim DTimePicker2 = DateTimePicker1.text & " 12:00:00"
cmd.Parameters.Clear()
cmd.CommandText = "SELECT SUM(seconds) FROM sqlccmlinestatus WHERE status = 'Running' and startdate BETWEEN @BEG AND @END"
cmd.Parameters.AddWithValue("@BEG", DTimePicker1)
cmd.Parameters.AddWithValue("@END", DTimePicker1)
Label70.Text = cmd.ExecuteScalar()
任何帮助都会很棒。
非常感谢, 皮特
答案 0 :(得分:0)
Dim D1 as Date = DateTimePicker1.Value
Dim D2 as Date = DateTimePicker2.Value
Dim DTimePicker1 as new Date(D1.Year, D1.Month, D1.Day, 11, 0, 0)
Dim DTimePicker2 as new Date(D2.Year, D2.Month, D2.Day, 12, 0, 0)
cmd.Parameters.Clear()
cmd.CommandText = "SELECT SUM(seconds) FROM sqlccmlinestatus WHERE status = 'Running' and startdate BETWEEN @BEG AND @END"
cmd.Parameters.AddWithValue("@BEG", DTimePicker1.ToString("yyyy-MM-dd HH:mm:ss.fff"))
cmd.Parameters.AddWithValue("@END", DTimePicker2.ToString("yyyy-MM-dd HH:mm:ss.fff"))
Label70.Text = cmd.ExecuteScalar()