how to change timespan variable to a integer type?

Question

I'm trying to convert timespan variable into an integer variable using 'parse'. I get an error that says:

Format exception was unhandled: Input string was not in correct format

This is the code is have :

   private void dateTimePicker4_ValueChanged(object sender, EventArgs e)
    {
        TimeSpan t = dateTimePicker4.Value.ToLocalTime() - dateTimePicker3.Value.ToLocalTime();
        int x = int.Parse(t.ToString());
        y = x;
    }

My target is to display this the change in time for two timepickers, dynamically in a text box, i.e, the difference in minutes between them should be displayed in a textbox automatically.

This in an awful question. Not the question itself, just that you are trying to parse the `ToString` value. You need to get in the habit of looking for existing properties and methods that might already do what you want. More often that not, the functionality usually exists already, somewhere — musefan, May 17 '13 at 11:01

score 50 · Accepted Answer · answered May 17 '13 at 10:59

50

the difference in minutes between them should be displayed in a textbox automatically.

Instead of parsing use TimeSpan.TotalMinutes property.

t.TotalMinutes;

The property is of double type, if you just need to integer part then you can do:

int x = (int) t.totalMinutes;

answered May 17 '13 at 10:59

Habib

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what if the difference is bigger than an Int32 eg: diff. between start of time and now? – Srivathsa Harish Venkataramana Apr 11 '17 at 08:12
@SrivathsaHarishVenkataramana, use `long`. The point was to take the integer part of the number ... – Habib Apr 11 '17 at 13:28

score 4 · Answer 2 · edited Jun 13 '17 at 14:47

4

 private void dateTimePicker4_ValueChanged(object sender, EventArgs e)
    {
        TimeSpan t = dateTimePicker4.Value.ToLocalTime() - dateTimePicker3.Value.ToLocalTime();
        int x = int.Parse(t.Minutes.ToString());
        y = x;
    }

Have you tried changing it to int x = int.Parse(t.Minutes.ToString());?

From : http://msdn.microsoft.com/en-us/library/system.timespan.aspx

edited Jun 13 '17 at 14:47

Roman Marusyk

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answered May 17 '13 at 11:03

Lawrence Wong

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how to change timespan variable to a integer type?

2 Answers2