[RESOLVED] Best way to validate time from user?

Hello, everyone. I have two text boxes (timeTakenA and timeTakenB), and I want the user to be able to enter a time into these text boxes (hh:mm:ss). Then when a button is pressed, the two times are added together and a total time taken is displayed.

I must admit, I'm really struggling to find a good way of doing this. Can anyone give me some ideas?

Thanks in advance.

**I'm using Visual Studio 2010 .NET 4

how about the Timespan struct ... have you considered that ? might work for ya.

Code:

---

            string[] time1, time2;
            string result;


            time1 = textbox1DotText.Split(':');
            time2 = textbox2DotText.Split(':');
            result = (new TimeSpan(Int32.Parse(time1[0]), Int32.Parse(time1[1]), Int32.Parse(time1[2])) +
                    new TimeSpan(Int32.Parse(time2[0]), Int32.Parse(time2[1]), Int32.Parse(time2[2]))).ToString();

            // Trust in The Force, Luke ....

---

I did this quickly, it could probably be a little cleaner, but should work:

Code:

---

namespace add_date_time
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }

    private void btnAddTimes_Click(object sender, EventArgs e)
    {
      int AHours = int.Parse(txtBoxTimeA.Text.Split(':')[0]);
      int AMinutes = int.Parse(txtBoxTimeA.Text.Split(':')[1]);
      int ASeconds = int.Parse(txtBoxTimeA.Text.Split(':')[2]);

      int BHours = int.Parse(txtBoxTimeB.Text.Split(':')[0]);
      int BMinutes = int.Parse(txtBoxTimeB.Text.Split(':')[1]);
      int BSeconds = int.Parse(txtBoxTimeB.Text.Split(':')[2]);

      int TotalHours = AHours+BHours;
      int TotalMinutes = AMinutes+BMinutes;
      int TotalSeconds = ASeconds+BSeconds;

      while (TotalSeconds > 60 | TotalSeconds == 60)
      {
        TotalSeconds = (TotalSeconds - 60);
        TotalMinutes = (TotalMinutes + 1);
      }

      while (TotalMinutes > 60 | TotalMinutes == 60)
      {
        TotalMinutes = (TotalMinutes - 60);
        TotalHours = (TotalHours + 1);
      }

      int TotalDays = 0;
      while (TotalHours > 24 | TotalHours == 24)
      {
        TotalHours = (TotalHours - 24);
        TotalDays = (TotalDays + 1);
      }

      txtBoxTotalTimeTaken.Text = TotalDays + "d :" + TotalHours + "h :" + TotalMinutes + "m :" + TotalSeconds + "s";

    }
  }
}

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I can't thank you guys enough. It's much appreciated. Your example worked perfectly Saldous. Good Job.

ThermoSight's code is a lot nicer. I learnt something too. :)

Ahh...I didn't see that edit. Thanks ThermoSight.