insert date from drop down list to the access database - ms-access

Question

I have drop down list called check in date. (in year,in date, in month).
<td>Check-in Date</td>
<td>:</td>
<td><select name="inmonth" id="inmonth">
<option value="-1">Month</option>
<option value="0">January</option>
<option value="1">February</option>
<option value="2">March</option>
<option value="3">April</option>
<option value="4">May</option>
<option value="5">June</option>
<option value="6">July</option>
<option value="7">August</option>
<option value="8">September</option>
<option value="9">October</option>
<option value="10">November</option>
<option value="11">December</option>
</select>
<select name="indate" id="indate">
<option value="-1">Date</option>
<option value="0">1</option>
<option value="1">2</option>
<option value="2">3</option>
<option value="3">4</option>
<option value="4">5</option>
<option value="5">6</option>
<option value="6">7</option>
<option value="7">8</option>
<option value="8">9</option>
<option value="9">10</option>
<option value="10">11</option>
<option value="11">12</option>
<option value="12">13</option>
<option value="13">14</option>
<option value="14">15</option>
<option value="15">16</option>
<option value="16">17</option>
<option value="17">18</option>
<option value="18">19</option>
<option value="19">20</option>
<option value="20">21</option>
<option value="21">22</option>
<option value="22">23</option>
<option value="23">24</option>
<option value="24">25</option>
<option value="25">26</option>
<option value="26">27</option>
<option value="27">28</option>
<option value="28">29</option>
<option value="29">30</option>
<option value="30">31</option>
</select>
<select name="inyear" id="inyear">
<option value="0">Year</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014">2014</option>
<option value="2015">2015</option>
<option value="2011">2016</option>
</select></td>
i want to convert inmonth,inyear, and indate as a short date first before insert it to the access database. what syntax should i use? btw, i'm using asp.

Answer 1

I Assume you are getting the values of selected Dropdown Item in a Postback then,
See you can simply take the values selected validate them and after that Parse them as a Valid date.
You can use DateTime.Parse or DateTime.TryParse for that or simply pass values of each dropdown to DateTime constructor, then you can call the DateTime.ToShortDateString() to get the date as you want it to be before submitting it to database.

Answer 2

This should take the input and convert it to a date like 2010-01-04 (YYYY-MM-DD):
Dim inmonth, indate, inyear, thedate
inmonth = CInt(Request.Form("inmonth")) + 1
indate = CInt(Request.Form("indate")) + 1
inyear = Request.Form("inyear")
thedate = inyear & "-" & Right(CStr(inmonth + 100), 2) & "-" & Right(CStr(indate + 100), 2)
If NOT IsDate(thedate) Then
Response.Write "Invalid date"
Else
' do something else ... '
End If
Note: The Right(CStr(variable + 100), 2) code snippet is for adding a leading zero.