这是一个例子
if 8.30 is there it should be 8 hours 30 minute
if 8 hour 20 minutes then 8.20
Please tell whether it is possible ? if yes
how ?
答案 0 :(得分:11)
当人们谈论小时时,他们通常意味着0.1 = 6分钟。
因此,转换8.3的正确公式是:
8小时+ 3 * 6分钟= 8:18
要将8:20转换为十进制,它将是:
8 + 20/6 = 8.333333(可能是8.3)
答案 1 :(得分:3)
如果它始终用。分隔,并且您希望它用于显示,那么只需使用它:
var ar="8.30".split(new[]{'.'});
Console.Write("{0} hours {1} minutes",ar[0], ar[1]);
PS:我们肯定在数组中有两个元素,但请在使用ar
之前检查数组ar[1]
的长度
答案 2 :(得分:2)
我的方法看起来像这样。 (这是红宝石所以你必须自己转换它,但逻辑在这里很重要)
def zeropad(number)
return ((number.to_f < 10) ? "0" : "") + number.round.to_s
end
def decimal_to_time(value)
t = value.split(".") #returns an array of ["hour", "minutes"]
hours, minutes = t[0], t[1]
minutes = zeropad( (minutes.to_f / 10**minutes.length) * 60 ) # parse the minutes into a time value
return (minutes.to_i == 0) ? hours : hours + ":" + minutes
end
def findTime(value)
value =~ /^\d+\.\d+/ ? decimal_to_time(value) : value
end
其中findTime(“5.015”)为您提供适当的时间值。
我已经在以下测试中对此进行了测试,它们都通过了。
| entered_time | expected_results|
| "5.6" | "5:36" |
| "5.9" | "5:54" |
| "5.09" | "5:05" |
| "5.0" | "5" |
| "5.00" | "5" |
| "5.015" | "5:01" |
| "6.03" | "6:02" |
| "5.30" | "5:18" |
| "4.2" | "4:12" |
| "8.3" | "8:18" |
| "8.33" | "8:20" |
| "105.5" | "105:30" |
| "16.7" | "16:42" |
| "Abc" | "Abc" |
| "5:36" | "5:36" |
| "5:44" | "5:44" |
答案 3 :(得分:1)
这里有几个扩展方法(用于DateTime和Decimal):
public static class DecimalToTimeConverters
{
public static DateTime ToDateTime(this decimal value)
{
string[] parts = value.ToString().Split(new char[] { '.' });
int hours = Convert.ToInt32(parts[0]);
int minutes = Convert.ToInt32(parts[1]);
if ((hours > 23) || (hours < 0))
{
throw new ArgumentOutOfRangeException("value", "decimal value must be no greater than 23.59 and no less than 0");
}
if ((minutes > 59) || (minutes < 0))
{
throw new ArgumentOutOfRangeException("value", "decimal value must be no greater than 23.59 and no less than 0");
}
DateTime d = new DateTime(1, 1, 1, hours, minutes, 0);
return d;
}
public static Decimal ToDecimal(this DateTime datetime)
{
Decimal d = new decimal();
d = datetime.Hour;
d = d + Convert.ToDecimal((datetime.Minute * 0.01));
return d;
}
}
我在一个新的空白页面中使用以下内容在ASP.net网页(我当时打开了一个Web项目)中非常快速地测试了这一点,它看起来很有效:
protected void Page_Load(object sender, EventArgs e)
{
Response.Clear();
Decimal d = new decimal();
d = 3.45M;
Response.Write(d.ToDateTime().ToString());
Response.Write("<br />");
DateTime d2 = new DateTime(2009, 1, 1, 4, 55, 0);
Response.Write(d2.ToDecimal().ToString());
}
答案 4 :(得分:0)
按照Rob但替换
string[] parts = value.ToString().Split(new char[] { '.' });
int hours = Convert.ToInt32(parts[0]);
int minutes = Convert.ToInt32(parts[1]);
as
int hours = (int)value;
int minutes = (int)((value - minutes) * 100);
没有字符串或依赖当前文化(假设'。'是小数点)
答案 5 :(得分:0)
如何将txtDuration.Text
值解析为十进制值?
if (txtDuration.Text)
{
var duration = int.Parse(txtDuration.Text);
var timespan = Boolean.Parse(hdfToggleDuration.Value) ? new TimeSpan (0, 0, duration, 0) : new TimeSpan (0, duration, 0, 0);
DateTime end = start.Add(timespan);
}