hi guys,

     Let me explain my form scenario I have a webform which has to receive 
the user entered date. For this i have three dropdownlist. one for day,one 
for month, and one for the year.The end user has to select the day from 
dropdownlist1 and month from the dropdownlist2 and year from the 
dropdownlist3. 

my coding is .... 

vRecDate = cboMonth_rec.SelectedItem.Value & "-" & 
cboDay_rec.SelectedItem.Value & "-" & cboYear_rec.SelectedItem.Value 

if not isDate(vRecDate) then 
   lbl1.text ="InvalidDate"
else
   lbl1.text =""
end if 
 
    I already checked with isdate() function in the click event of the 
command button. it is not working when the user doesn't select the year 
still it shows the date is valid. so i need some perfect soultions for 
this problem. 

thanks in advance 
raj 

I do recommend using the Calendar Control for this scenario. Why don't
take the advantage of such control including handling events,
validations, etc?

Regards,

Mazen

-----Original Message-----
From: raj [mailto:rwave74@y...] 
Sent: Sunday, December 15, 2002 7:26 AM
To: ASP.NET
Subject: [aspx] Date Validation.

hi guys,

     Let me explain my form scenario I have a webform which has to
receive 
the user entered date. For this i have three dropdownlist. one for
day,one 
for month, and one for the year.The end user has to select the day from 
dropdownlist1 and month from the dropdownlist2 and year from the 
dropdownlist3. 

my coding is .... 

vRecDate = cboMonth_rec.SelectedItem.Value & "-" & 
cboDay_rec.SelectedItem.Value & "-" & cboYear_rec.SelectedItem.Value 

if not isDate(vRecDate) then 
   lbl1.text ="InvalidDate"
else
   lbl1.text =""
end if 
 
    I already checked with isdate() function in the click event of the 
command button. it is not working when the user doesn't select the year 
still it shows the date is valid. so i need some perfect soultions for 
this problem. 

thanks in advance 
raj 

hi mazen,

    calender control is big and we need to allocate
seperate space in the web form.can i have any sample
forms with calender control?

thanks in advance
raj



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Check the following URL:

http://aspalliance.com/search/default.asp?keyword=calendar


Mazen

-----Original Message-----
From: hi hi [mailto:rwave74@y...] 
Sent: Monday, December 16, 2002 8:16 AM
To: ASP.NET
Subject: [aspx] RE: Date Validation.

hi mazen,

    calender control is big and we need to allocate
seperate space in the web form.can i have any sample
forms with calender control?

thanks in advance
raj



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You could use a textbox for date-entry and then validate the stringformat 
with a regular expression.  Its shorter then 3 combo-boxes and works 
faster. Keep in mind that you must set the correct CultureInfo for the 
date when converting it from string.

    ' valides dates in the DD/MM/YYYY-format
    Public Function ValidateDate(ByVal inputString As String) As Boolean
        Dim regEvalString As String = "^(?:(?:31(\/|-|\.)(?:0?[13578]|1
[02]))\1|(?:(?:29|30)(\/|-|\.)(?:0?[1,3-9]|1[0-2])\2))(?:(?:1[6-9]|[2-9]
\d)?\d{2})$|^(?:29(\/|-|\.)0?2\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468]
[048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1
\d|2[0-8])(\/|-|\.)(?:(?:0?[1-9])|(?:1[0-2]))\4(?:(?:1[6-9]|[2-9]\d)?\d{2})
$"
        Dim regExpVal As System.Text.RegularExpressions.Regex
        regExpVal = New System.Text.RegularExpressions.Regex(regEvalString)
        return regExpVal.Match(inputString).Success 
    End Function

> hi guys,

>      Let me explain my form scenario I have a webform which has to 
receive 
t> he user entered date. For this i have three dropdownlist. one for 
day,one 
f> or month, and one for the year.The end user has to select the day from 
d> ropdownlist1 and month from the dropdownlist2 and year from the 
d> ropdownlist3. 

> my coding is .... 

> vRecDate = cboMonth_rec.SelectedItem.Value & "-" & 
c> boDay_rec.SelectedItem.Value & "-" & cboYear_rec.SelectedItem.Value 

> if not isDate(vRecDate) then 
 >   lbl1.text ="InvalidDate"
e> lse
 >   lbl1.text =""
e> nd if 
 > 
 >    I already checked with isdate() function in the click event of the 
c> ommand button. it is not working when the user doesn't select the year 
s> till it shows the date is valid. so i need some perfect soultions for 
t> his problem. 

> thanks in advance 
r> aj