c# - 将时间跨度转换为日期时间添加到 C# 中的日期时间选择器

Question

我想在datatimerpicker中显示一个时间跨度数据类型，我必须先转换但我不知道该怎么做

private void button1_Click(object sender, EventArgs e)
{
    TimeSpan a = new TimeSpan(12, 00, 00);
    TimeSpan b = new TimeSpan(13, 00, 00);

    TimeSpan r = b - a;
    TimeSpan rr = new TimeSpan(r.Ticks / 2);

    MessageBox.Show("Test\n " + rr);   ///this is type TimeSpan 

    dateTimePicker.Value =Convert.ToDateTime(rr);   
    // error here
    // Additional Information: An object of type 'System.TimeSpan' 
    // can not be converted to type 'System.IConvertible'. "
}

Answer 1

This may in no way be an answer to your question - take it as just an insight into what you are trying to ask and then we can maybe create a real question/answer for it.

日期/时间选择器必须有一个日期组件。但是，我们可以“忽略”日期部分..

由于问题的模糊性，我只能推测...但这里是...我的“可能是”最终将如何表达...

TimeSpan a = new TimeSpan(12, 00, 00);       // 12 hours (could be midday)
TimeSpan b = new TimeSpan(13, 00, 00);       // 13 hours (could be 1 pm)

TimeSpan r = b - a;                          // 1 hour (could be 1 am)

TimeSpan rr = new TimeSpan(r.Ticks / 2);     // 30 minutes (could be 12:30 am)

dateTimePicker.Value = DateTime.Now.Add(rr); // current date time plus 30 minutes

// -- OR --

dateTimePicker.Value = DateTime.Now.Date.Add(rr); // current date plus 30 minutes
                                                  // eg: 2017-08-29 00:30:00

我想这是你要找的最后一个，但加上这个……

dateTimePicker.Format = DateTimePickerFormat.Time;

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有关更多信息，请参阅:https://msdn.microsoft.com/en-us/library/ms229631(v=vs.100).aspx