2 digit number in c#

Question

A need some help, I have a TextBlock that contains a string like this 00:00:00 And I want to create a timer that will count every second eg00:00:01 , 00:00:02 etc

So the stupid thing that I do is to take the value of the text box

string[] times = myTextbox.Text.Split(':');
int hours = Int32.Parse(times[0]);
int minutes = Int32.Parse(times[1]);
int seconds = Int32.Parse(times[2]);

Then I increase the right variable and finally I join them again and put them back in the textblock, BUT now my counter is like this: 0:0:1, 0:0:2, ...

I know the problem, its very logical but my question is how can I solve it :)

Thank you very much.

Answer 1

string displayString = String.Format("{0:00}:{1:00}:{2:00}", 
 hours, minutes, seconds);

The part after the : is a format description. 00 means always use at least two positions and show an empty position as 0.

Answer 2

When you "join them again", use .ToString("00") on each integer to get two digits. Alternatively, look into using a TimeSpan here.

Answer 3

Instead of splitting the text of the textbox i would use DateTime.Parse like this:

var time = DateTime.Parse(myTextBox.Text);

then add a second:

time = time.AddSeconds(1);

and then finally, putting it back out there:

myTextBox.Text = time.ToString("myPattern");

where myPattern is replaced with any of the patterns described here: http://www.geekzilla.co.uk/View00FF7904-B510-468C-A2C8-F859AA20581F.htm

Answer 4

TimeSpan span = DateTime.Now.Subtract(startTimeOfTimer);

int Totalsec = span.Seconds;
           int seconds = Totalsec % 60;
           int minutes = span.Minutes;
           int hour = span.Hours;
           string Elapsedtime = string.Format("{0:00}:{1:00}:{2:00}",hour, minutes, seconds); that will output hour:min:sec as 00:00:00(two digit number)

Answer 5

The following takes the string from the TextBox , adds 1 second and return a string of the result (including correct wrapping around minutes/hours):

myTextbox.Text = TimeSpan.FromSeconds ( TimeSpan.Parse ( myTextbox.Text ).TotalSeconds + 1 ).ToString ( "c" );

One remark - you need to add exception handling in case that TextBox is editable and might contain wrong data...

For some references see:

• http://msdn.microsoft.com/en-us/library/system.timespan.aspx
• http://msdn.microsoft.com/en-us/library/system.timespan.fromseconds.aspx
• http://msdn.microsoft.com/en-us/library/se73z7b9.aspx
• http://msdn.microsoft.com/en-us/library/ee372286.aspx