Retain entered fields on form with errors - ASP

[jen4950]

I'm new to ASP, but quickly catching on- I'm running thru "Dreamweaver 8 with ASP, ColdFusion and PHP" by Jefferey Bardzell- pretty decent book.

Currently I've got a ficticious form that has some simple validation included that sends the user back to the form with the erroneous fields highlighted with CSS.

I'm passing the error back via a Querystring; but would like to have the form retain the acceptable entries from the previous submission. What is the most common implementation of this? Do you do it with a cookie and set the initial value of the text boxes with a variable that starts out null? And is there a way to do it without cookies or a Querytstring?

Here's the form:

<form id="form_tourprice" name="form_tourprice" method="post" action="tourprice_processor.asp">
  <table width="60%" border="0" cellspacing="0" cellpadding="3">
    <tr>
      <%
        If Request.QueryString("error") = "notNumeric" Or Request.QueryString("error") = "adultNotNumeric" Then
          Response.Write("<td class=""error"">Number of Adults</td>")
        Else
          Response.Write("<td>Number of Adults</td>")
        End If
      %>
      
      <td><input type="text" name="numAdults" id="numAdults" /></td>
      
      </tr>
      <tr>
      <%
        If Request.QueryString("error") = "notNumeric" or Request.QueryString("error") = "childrenNotNumeric" Then
          Response.Write("<td class=""error"">Number of Children</td>")
        Else
          Response.Write("<td>Number of Children</td>")
        End If
      %>
      
      <td><input type="text" name="numChildren" id="numChildren" /></td>
    
    </tr>
       <tr>
         <td>Tour Name</td>
         <td><select name="tourName" size="1" id="tourName">
           <option value="500">Highlights of Argentina</option>
           <option value="700">Highlights of Western Canada</option>
           <option value="900">Egyptian Pyramids and More</option>
         </select>
         </td>
       </tr>
       <tr>
         <td><input type="submit" name="Submit" id="Submit" value="Submit" /></td>
       </tr>
     </table>
  </form>

And here's the processor page guts:

<%
If Not IsNumeric(Request.Form("numAdults")) and Not IsNumeric(request.Form("numChildren"))Then
      Response.Redirect("tourprice.asp?error=notNumeric")
elseif Not IsNumeric(request.Form("numAdults")) Then
      Response.Redirect("tourprice.asp?error=adultNotNumeric")
elseif Not IsNumeric(request.Form("numChildren")) Then
      Response.Redirect("tourprice.asp?error=childrenNotNumeric")
End If
%>

<%
Dim numAdult, numChild, basePrice, tourPrice


numAdult = Request.Form("numAdults")
numChild = Request.Form("numChildren")
basePrice = Request.Form("tourName")

tourPrice = (numAdult * basePrice) + (numChild * basePrice)
%>

More elegant solutions to this simple problem would be much appreciated!

 

[Arainach]

<input type="text" name="numAdults" id="numAdults" />

In PHP, I'd so something like

<input type="text name="numAdults" id="numAdults" <? if (isset($_REQUEST['numAdults'])) echo 'value="'.$_REQUEST['numAdults'].'"'; ?> />

If ASP has some equivalent to the isset() command, you could just do that.

Similarly,

if (isset($_REQUEST['tourName']) && ($_REQUEST['tourName'] == 500)) echo ' SELECTED ';

Works for Select Boxes

 

[jen4950]

Thanks for the post- any other ideas or methods?