String formatting

Question

I made timer, which outputs time like this:

0:1, 0:2, 0:3 ... 0:10 ...
string.Format("{0}:{1}", hours, minutes);

But I want to output as follows:

00:01, 00:02, 00:03

Answer 1

0:1, 0:2, 0:3 ... 0:10 ...
string.Format("{0:00}:{1:00}", hours, minutes);

Will output

00:01, 00:02, 00:03

Answer 2

How about reading the .NET documentation at http://msdn.microsoft.com/en-us/library/system.string.format.aspx ? Many working samples already provided by others...

Answer 3

If you have a DateTime object, you can say:

DateTime dt = DateTime.Now;
// string.Format("{0:hh:mm}", dt);

If you have numbers, use:

string.Format("{0:00}:{1:00}", hours, minutes);

Answer 4

string.Format("{0,2}:{1,2}", hours, minutes);

Answer 5

In C# to have leading Zero you can use Format :

intValue.ToString("00.##");

So, if you want to have your minute and second with leading zero you can use:

string.Format("{0}:{1}", hours.ToString("00.##"), minutes.ToString("00.##"));

If your timer use the TimeSpan object you can use the Format for the TimeSpan:

myTimeSpan.Format("hh:mm");

Answer 6

you should take a look at this site . it gives a nice run-down on string formatting.

Answer 7

您可以在Timespan或datetime对象上使用toString，也可以将代码更改为以下内容

string.Format("{0:00}:{1:00}");

Answer 8

i don't know if there is a simple and correct way of doing it.. but anyway you can write this

  String.Format("{0}:{1}",hours < 10 ? ("0" + hours) : hours,  minutes < 10 ? ("0" + minutes) : minutes);

hopes it's help... :)