How to calculate days from two date textbox?

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I have two text box on which I give two date input by using rapid application development datepicker textbox. I have another text box on which I wanna show the duration of those two text box date.
I want to calculate total days of those to date. Can anyone please provide me a solution?

Posted 9-Oct-10 23:47pm

sazib

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OriginalGriff · Answer 1 · 2010-10-10T00:06:00

Solution 2

Better solution:

TimeSpan ts = secondDate.Value - firstDate.Value;
myTextBox.Text = ts.Days.ToString();

If you just use DateTime.Day, then you will get problems if the month changes, etc.

Posted 10-Oct-10 0:06am

OriginalGriff

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sazib 11-Oct-10 3:54am

I've got this error after using your solution.
Compiler Error Message: CS1061: 'Telerik.Web.UI.RadDatePicker' does not contain a definition for 'Value' and no extension method 'Value' accepting a first argument of type 'Telerik.Web.UI.RadDatePicker' could be found (are you missing a using directive or an assembly reference?)

The code is like this-
string user = Session["username"].ToString();
string type = DropDownListType.SelectedValue.ToString();
TimeSpan ts = RadDatePickerStart.Value - RadDatePickerEnd.Value;
durationTextBox.Text = ts.Days.ToString();

Abhinav S · Answer 2 · 2010-10-09T23:55:00

Solution 1

Try x = DateTimePicker1.Value.Day - DateTimePicker2.Value.Day.

Posted 9-Oct-10 23:55pm

Abhinav S

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OriginalGriff 10-Oct-10 6:06am

If you just use DateTime.Day, then you will get problems if the month changes, etc.

Abhinav S 10-Oct-10 6:08am

Ok makes sense. I can't run this code, but maybe DateTimePicker1.Value.Day - DateTimePicker2.Value and then a simple convertsion to days might also be a solution. Using TimeSpan, however, is the best.

DeepakShukla · Answer 3 · 2010-10-10T01:34:00

Solution 3

Better Solution is :
Both Days are in Date time Format

System.TimeSpan span = ToDate - DateFrom;
int days = (int)span.TotalDays;

Posted 10-Oct-10 1:34am

DeepakShukla

Updated 10-Oct-10 1:35am

v2

sazib · Answer 4 · 2010-10-11T21:46:00

Solution 4

I want to show the value on the tex tbox after I click on the text box. How do I do that.

Posted 11-Oct-10 21:46pm

sazib