Parsing TimeSpan from string including format

问题

I'm sure this must be simple, but I can't figure out how to word it correctly in Google...

I have a config which has a field:

TimeToPoll="1d"

Now I want to do something like:

TimeSpan.Parse(TimeToPoll);

Returning a timespan of one day.

In C#

EDIT: I'm looking for a method which allows parse of "1d" as well as "1s" or "1y" etc. Is this possible?

Meaning:

     "1d" parses to {1.00:00:00}
     "1h" parses to {0.01:00:00}
     "1m" parses to {0.00:01:00}
     "1s" parses to {0.00:00:01}

回答1:

The d is not needed and is the reason your parse fails.

var oneDay = TimeSpan.Parse("1");

Update:

For what you are looking to do, there is no built in support. You would need to write your own parser.

回答2:

This is my resolution:

    public static TimeSpan ConvertToTimeSpan(this string timeSpan)
    {
        var l = timeSpan.Length - 1;
        var value = timeSpan.Substring(0, l);
        var type = timeSpan.Substring(l, 1);

        switch (type)
        {
            case "d": return TimeSpan.FromDays(double.Parse(value));
            case "h": return TimeSpan.FromHours(double.Parse(value));
            case "m": return TimeSpan.FromMinutes(double.Parse(value));
            case "s": return TimeSpan.FromSeconds(double.Parse(value));
            case "f": return TimeSpan.FromMilliseconds(double.Parse(value));
            case "z": return TimeSpan.FromTicks(long.Parse(value));
            default: return TimeSpan.FromDays(double.Parse(value));
        }
    }

回答3:

You should store your values in your config file in one of the formats that TimeSpan.Parse can work with. There are several samples on that page.

EDIT: The examples are in the code toward the bottom of the page.

来源：https://stackoverflow.com/questions/10207592/parsing-timespan-from-string-including-format

标签

.net

parsing

timespan