Inputting a time and checking it against System.DateTime

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Hello,

I am having troubles checking a time that a user inputs against the current time.

The code is in a timer (which is checking the time every second).

What I have got so far:

private void timer1_tick(object sender, EventArgs e)
{
_datetimetocheck = convert.todatetime(txtbxtimeinput.text)

if(_datetimetocheck == _datetimenow)
{
Console.Beep(10,1000);
MessageBox.Show("testing");
}

}

Any suggestions are gratefully received :)

Regards,

Glen Childs

Posted 16-Jul-13 22:51pm

Glen Childs

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Comments

Naz_Firdouse 17-Jul-13 4:55am

what problem you are facing???

Glen Childs 17-Jul-13 4:59am

The console beep and the message box doesn't run, I'm not sure if the code is at fault or whether it is the way I'm inputting the time into the text box on the form.

Pheonyx 17-Jul-13 4:57am

The odds of that ever working are slim to non becuase DateTime.Now will have a micoseconds option to it. You need to refine your check to compare the date/time components that actually matter to you.

Glen Childs 17-Jul-13 5:04am

Oh right ok.

Something like this possibly?
DateTime time = DateTime.Now;
string format = "mm hh"

Pheonyx 17-Jul-13 5:10am

Yeah, if that is what you are wanting to check against.
How are you ensuring that the user only types in numbers in the correct format in your text box?
There are various ways you could approach. Personally I would look at using a datetime picker as that is what they are designed for:
Sample of doing this
Then you can just compare minute against minute, hour against hour and if need be second against second if you change the formatting in that example.

midnight_ 17-Jul-13 8:29am

I totally agree with Pheonyx! The solution is incorrect failing at line 1 of the tick-event.
A timer triggered every second would also read incomplete parts of a datetime input,
regardsless of what format you choose.
Thats absolutly not robust kind of coding.

4 solutions

Solution 3

Hi Glen!

I dont know what you try to achieve with the timer running every second, but
if you want something like a validation you should use events like TextChanged or KeyDown on the textbox.

with keydown it could look something like that:

C#

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
   if (e.Key != Key.Enter) return;

   DateTime dtToCheck = DateTime.Today;

   DateTime inputParsed;
   DateTime.TryParse(textBox1.Text, out inputParsed);

   if (inputParsed != null)
   {
      //uncomment line above if you want to use autocomplete
      //textBox1.Text = inputParsed.ToString();

      if (inputParsed.Equals(dtToCheck))
      {
          //match!
      }
   }
}

Posted 16-Jul-13 23:12pm

midnight_

Comments

Glen Childs 17-Jul-13 6:34am

Cheers

Solution 1

use like this
_datetimetocheck.ToString() == _datetimenow.ToString()

Posted 16-Jul-13 22:55pm

M.R.A.

Comments

Glen Childs 17-Jul-13 6:33am

Cheers

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Vehbi Neziri · Accepted Answer · 2013-07-16T23:20:00

Solution 4

C#

private void timer1_Tick(object sender, EventArgs e)
{
    DateTime date1 = Convert.ToDateTime(txtbxtimeinput.Text);
    DateTime date2 =DateTime.Now;

    if (date1.ToString() == date2.ToString())
    {
        Console.Beep(37, 1000);
        MessageBox.Show("testing");
    }
}

Posted 16-Jul-13 23:20pm

Vehbi Neziri

Comments

Glen Childs 17-Jul-13 6:33am

Works fantastic, Cheers

Naz_Firdouse · Accepted Answer · 2013-07-16T23:09:00

Solution 2

use like this

C#

string format = "M:dd:yyyy h:mm:ss"
           string s= (DateTime.Now.ToString(format));
if(_datetimetocheck == s)
{
//do something
}

if the user enters month,date and year also
else

C#

string format = "h:mm:ss";
string s= (DateTime.Now.ToString(format));

if(_datetimetocheck == s)
{
//do something
}
</pre>

Posted 16-Jul-13 23:09pm

Naz_Firdouse

Comments

Glen Childs 17-Jul-13 6:33am

Thanks :)

Naz_Firdouse 17-Jul-13 6:42am

if it solves your solution,mark as answer and vote up