Validate Date Form

In your asp page

you can check it as

<%
If IsDate(Request.Form("txtStartDate") ) Then
Response.Redirect("Invali Date")

End If
%>

why dont you just create a drop down list on the webpage that ensures that the format is correct

ie:

<select name="DAY">
<option value="01">01</option>
<option value="02">02</option>
<option value="03">03</option>
     etc...
</select>

<select name="MONTH">
<option value="01">01</option>
<option value="02">02</option>
<option value="03">03</option>
     etc...
</select>

<select name="YEAR">
<option value="2004">2004</option>
<option value="2005">2005</option>
<option value="2006">2006</option>
     etc...
</select>


Then when the form/webpage is sent you add the dates together to get the dd/mm/yyyy format

dFullDate = Day & "/" & Month & "/" Year

you should also look into using Session.lcid, depending on where you are, for instance im in Ireland so i would use

Session.lcid = 2057    that forces the format to dd/mm/yyyy

Check the date field length:

If  len(txtStartDate) <> 8 then
   txtStartDate = Left(txtStartDate,6)&"20"&right(txtStartDate,2)
end if

nurbek

I have two date fields on 1 form how do i apply this to both

post the code

I would recommend highly using isDate().  While dropdowns are okay, I wouldn't recommend them.  You still don't get away from doing validation on them, because you still have to worry about users entering 04/31/2003, 02/30/2003, 09/31/2002, and many other invalid date combinations.  By far, the easiest way to validate your dates is to simply use the vbscript function "isDate()", as nurbek has already suggested.

Also, you say that you get "Page cannot be displayed error" when a bad date is submitted, right?  Well, please do this:

-- In internet explorer, go to tools --> internet options
-- select the "advanced" tab all the way to the right
-- under the "browsing" section, find the item that says "Show friendly HTTP error messages"
-- please make sure this value is UNCHECKED.  Leaving it checked (ie's default setting) gives you "Page Cannot be displayed" errors, while unchecking it gives you specific, useful ASP errors.  

Hope this helps!
peh803

if you asked for javascript
you can call isDate function to validate the dates

function ValidateForm(){
      var dt=document.frmSample.txtDate
                 var dt2=document.frmSample.txtDate2
      if (isDate(dt.value)==false){
            dt.focus()
            return false
      }
      if (isDate(dt2.value)==false){
            dt2.focus()
            return false
      }
    return true
 }


if you asked for asp

If IsDate(Request.Form("txtStartDate") ) Then
' .. invalid date
End If

If IsDate(Request.Form("txtStartDate2") ) Then
' .. invalid date
End If