Detect the problem

Question

Hi,
How to detect the problem with the time, like
25:40

by enhancing these codes

            string format="t";
                try
                {
                    System.Globalization.CultureInfo provider = System.Globalization.CultureInfo.InvariantCulture;
                    DateTime dt = DateTime.ParseExact(tb_start.Text.Trim(), format, provider);
                    if (dt.Hour == null)
                    {
                        ...
                    }
                }
                catch (Exception ex)
                {
                    ...

for finding out the input problem there?

---

Many Thanks & Best Regards, Hua Min

Answer 1

It is simple.

Use DateTime.TryParse() method.

See below link for more information.

http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx

Hope This Helps... :)

Answer 2

How to detect the problem with the time, like
25:40

by enhancing these codes

            string format="t";
                try
                {
                    System.Globalization.CultureInfo provider = System.Globalization.CultureInfo.InvariantCulture;
                    DateTime dt = DateTime.ParseExact(tb_start.Text.Trim(), format, provider);

That will throw an exception. If you don't want an exception, then look at TryParseExact()
and TryParse().

- Wayne