Correct format for TimeSpan

[Grayson_Peddie]

Hi. I need help. I am working on making a simple alarm clock and I want to get all the information from the two NumericUpDown controls and one button. I had limit the hours between 1-12 and limited minutes to 0-59, and set my button to change the text from AM-PM or PM to AM. Here's my code:

        public TimeSpan tsTime;
        
        private void nHour_ValueChanged(object sender, System.EventArgs e)
        {
            if(nHour.Value > 12)
            {
                nHour.Value = 1;
            }
            if(nHour.Value == 0)
            {
                nHour.Value = 12;
            }
            tsTime = TimeSpan.Parse(nHour.ToString()+":"+nMinute.ToString()+":00");
        }

        private void btnPMAM_Click(object sender, System.EventArgs e)
        {
            if(btnPMAM.Text == "AM") 
            {
                btnPMAM.Text = "PM";
            }
            else
            {
                btnPMAM.Text = "AM";
            }
            tsTime = TimeSpan.Parse(nHour.ToString()+":"+nMinute.ToString()+":00");
        }

        private void nMinute_ValueChanged(object sender, System.EventArgs e)
        {
            if(nMinute.Value  > 59)
            {
                nMinute.Value =  0;
            }
            if(nMinute.Value  <  0)
            {
                nMinute.Value = 59;
            }
            tsTime = TimeSpan.Parse(nHour.ToString()+":"+nMinute.ToString()+":00");
        }

What is the correct format for passing a time to tsTime TimeSpan object? I just have ":00" for the second since the user can only set the hours and the minutes. And, of course, since I do have a clock control that I made by creating my user control, the tsTime will be passed over to a string variable, so that, when the string variable has the same string as the clock's, the alarm label will show up.

[nvoigt]

I am working on making a simple alarm clock and I want to get all the information from the two NumericUpDown controls and one button. I had limit the hours between 1-12 and limited minutes to 0-59, and set my button to change the text from AM-PM or PM to AM.

It would be a lot easier and a lot more readable to switch to the 24h style to have 0:00 - 23:59.

From this, you cannot construct a timespan. A timespan is the difference of two times. Like the timespan between now and lunch is 1 hour 30 minutes. Two times and one absolute value that marks the difference. Construct a datetime object from your values. Subtract the current time ( static function of datetime ). The timespan you get is the time that has to pass until the set time is reached.

[Grayson_Peddie]

If I use a DateTime method instead of TimeSpan, I think that a DateTime.Parse() requires me to add a date, too. But you can correct me if I'm wrong.

Can you show me the code on how to parse the Hours and Minutes without a Date?

[nvoigt]

Well, you do need a date, but why not use it ? You have a day and time and a day and time of the alarm. Use those

[Grayson_Peddie]

Okay thanks but date is unnessessary to me since this is going to be a simple alarm clock. My program is going to be displaying a time but no date.