C# 用所需日期节省时间

下面是我的html代码

 <MKB:TimeSelector ID="TimeFrom" runat="server" DisplaySeconds="False">
                                                </MKB:TimeSelector>

我想在数据库中保存日期和时间。如果我想像下面这样做的话

 string t1 = tsTimeFrom.Hour.ToString() + ":" + tsTimeFrom.Minute.ToString() + " " + tsTimeFrom.AmPm.ToString();

 DateTime Time_From = Convert.ToDateTime(t1);

它用当前日期保存时间，我想用VehicleBookingDate.Text中的日期保存时间

我该怎么做呢

// use a string formatter to pull it all together
string s = string.Format("{0} {1}:{2} {3}",
                         VehicleBookingDate.Text,
                         tsTimeFrom.Hour,
                         tsTimeFrom.Minute,
                         tsTimeFrom.AmPm);

// You can parse it this way, which will assume the current culture settings
DateTime Time_From = DateTime.Parse(s);

// Or you can be much more specific - which you probably should do.
DateTime Time_From = DateTime.ParseExact(s,
                                         "d/M/yyyy hh:mm:ss tt",
                                         CultureInfo.InvariantCulture);

如果你知道的话，你可能想使用一种特定的文化

请注意，不同文化的日期格式差异很大。例如，值

1/4/2013

可以解释为1月4日或4月1日，具体取决于您所在的地区。您要么需要了解区域性，要么需要明确告诉用户要使用什么格式

// use a string formatter to pull it all together
string s = string.Format("{0} {1}:{2} {3}",
                         VehicleBookingDate.Text,
                         tsTimeFrom.Hour,
                         tsTimeFrom.Minute,
                         tsTimeFrom.AmPm);

// You can parse it this way, which will assume the current culture settings
DateTime Time_From = DateTime.Parse(s);

// Or you can be much more specific - which you probably should do.
DateTime Time_From = DateTime.ParseExact(s,
                                         "d/M/yyyy hh:mm:ss tt",
                                         CultureInfo.InvariantCulture);