CalendarExtender: How to count days between two selected dates

Hi

How can I calculate the days between selected dates from 2 calendarExtender controls?

thank you

zipfeli

Are you calculating client side or server side?

Clientside. Actually I want to validate the days between two textboxt dates before postback. More than 30 days should give errormessage .

Hi,

Here is a sample for your reference:

function fun(e)
 {
 var ce1 = $find("ce1");
 var start = ce1.get_selectedDate();
 if(start == null)
 return;
 var ce2 = $find("ce2");
 var end = ce2.get_selectedDate();
 if(end == null)
 return;
 start.setDate(start.getDate() + 30);
 if(start < end)
 alert("invalid");
 start.setDate(start.getDate() - 30);
 }
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></div>
 <ajaxToolkit:CalendarExtender ID="CalendarExtender1" BehaviorID="ce1" runat="server" TargetControlID="TextBox1"OnClientDateSelectionChanged="fun">
 </ajaxToolkit:CalendarExtender>
   
 <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
 <ajaxToolkit:CalendarExtender ID="CalendarExtender2" BehaviorID="ce2" runat="server" TargetControlID="TextBox2" OnClientDateSelectionChanged="fun">
 </ajaxToolkit:CalendarExtender>

Hope this helps.