How to calculate no of days between two calender in asp.net with c#

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<pre lang="HTML"></pre>
<table width="100%">
 <tr>
     <td valign="top" align="center"><strong>Training Date</strong></td>
     <td valign="top" align="left"><b>FROM</b><br />
         <asp:TextBox ID="txtDatefrom" runat="server"></asp:TextBox>
          <asp:RequiredFieldValidator ID="RequiredFieldValidator4" SetFocusOnError="true" runat="server" ErrorMessage="Field Can't Empty" ControlToValidate="txtDatefrom">
         </asp:RequiredFieldValidator><br />
         <asp:Image ID="imgDatefrom" runat="server" ImageUrl="~/img/cal.gif" />
         <cc1:TextBoxWatermarkExtender ID="TextBoxWatermarkExtender1" runat="server" TargetControlID="txtDatefrom" WatermarkText="00/0/0000"></cc1:TextBoxWatermarkExtender>
        <cc1:CalendarExtender ID="CalendarExtender1" Format="dd/MM/yyyy" runat="server"
         PopupButtonID="imgDatefrom" TargetControlID="txtDatefrom" PopupPosition="TopRight">
        </cc1:CalendarExtender>
</td>

<td valign="top" colspan="4" align="left"><b>TO</b><br />
 <asp:TextBox ID="txtDateto" runat="server"></asp:TextBox>
  <asp:RequiredFieldValidator ID="RequiredFieldValidator5" runat="server" SetFocusOnError="true" ErrorMessage="Field Can't Empty" ControlToValidate="txtDateto" ForeColor="#990000"></asp:RequiredFieldValidator><br />
  <asp:Image ID="imgDateto" runat="server" ImageUrl="~/img/cal.gif" />
  <cc1:TextBoxWatermarkExtender ID="TextBoxWatermarkExtender2" runat="server" TargetControlID="txtDateto" WatermarkText="00/0/0000">
  </cc1:TextBoxWatermarkExtender>
 <cc1:CalendarExtender ID="CalendarExtender2" Format="dd/MM/yyyy" runat="server"
     PopupButtonID="imgDateto" TargetControlID="txtDateto" PopupPosition="TopRight">
 </cc1:CalendarExtender>
</td>
</tr>
<tr>
     <td valign="top" align="center"><strong>No of Days(in numeric)</strong></td>
     <td valign="top" colspan="3" align="left">
     <asp:TextBox ID="txtNoofdays" runat="server"></asp:TextBox>
     </td>

</tr>
</table>
<b>NOTE:-How to calculate no of days between two calender in asp.net with c# </b>

Posted 23-Feb-14 20:40pm

ashishmagneti

Updated 23-Feb-14 20:42pm

v2

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Comments

Ramug10 24-Feb-14 2:45am

Are you want to calculate no of days between txtDatefrom and txtDateto?

Sergey Alexandrovich Kryukov 24-Feb-14 2:50am

What is "calender"? :-)
—SA

2 solutions

Solution 1

Many ways to do this
see this:
How to calculate difference between two dates in textboxes in C#.[^]
http://stackoverflow.com/questions/10854745/calculating-number-of-days-between-2-dates-chosen-from-calendarc[^]

and read this:
http://msdn.microsoft.com/en-us/library/system.timespan%28v=vs.110%29.aspx[^]

Posted 23-Feb-14 20:47pm

Tom Marvolo Riddle

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OriginalGriff · Accepted Answer · 2014-02-23T20:47:00

Solution 2

Easy: take the two TextBox values, convert them to DateTime objects, and subtract one from the other:

C#

DateTime startDate = DateTime.Parse(txtDatefrom.Text);
DateTime endDate = DateTime.Parse(txtDateTo.Text);
TimeSpan diff = endDate - startDate;
double days = diff.TotalDays;

Posted 23-Feb-14 20:47pm

OriginalGriff

Comments

ashishmagneti 24-Feb-14 5:14am

i used this code but its not working

OriginalGriff 24-Feb-14 5:23am

"It's not working" doesn't tell us much - what is it doing that you didn't expect, or not doing that you did?
Remember, we can't see your screen, or access your HDD, or read your mind - so tell us what is going on, tell us what the inputs are, etc.!