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Thread: Overflow error

  1. #1
    Join Date
    Jan 2004
    Posts
    27

    Unanswered: Overflow error

    I want to allow the user to enter duration & amount of loan & then display the amount of the monthly & weekly instalements in textboxes. However I am getting an 'Overflow' error.

    Code:
    <%
    dim time, amt, total, int, intTotal, finalTotal, month, monthly, week, weekly
    time = Request.Form("txtDuration")
    amt = Request.Form("txtAmt")
    int = 0.08
    
    if CCur(time) = 1 then
    	month = 12
    	week = 52
    ElseIf CCur(time) = 2 then
    	month = 24
    	week = 104
    End If
    
    intTotal = (CCur(amt) * CCur(int))
    total = (CCur(intTotal) + CCur(amt))
    
    monthly = (CCur(total) / CCur(month))
    weekly = (CCur(total) / CCur(week))
    %>
    
    <form action=# method="POST">
    <table align=center border=0 width="394" rules="none">
    	<tr>
    		<th align=center width="194">Monthly Repayments</th>
    		<th align=center width="194">Weekly Repayments</th>
    	</tr>
    	<tr>
    		<td align=center width="194"><input type="text" name="txtMonthly" 
    				value="<%Response.Write(monthly)%>"> </td>
    		<td align=center width="194"><input type="text" name="txtWeekly" 
    				value="<%Response.Write(weekly)%>"> </td>
    	</tr>
    </table>
    </form>
    Help please......thanks

  2. #2
    Join Date
    Nov 2003
    Location
    Christchurch, New Zealand
    Posts
    1,618
    OKie,.. first question, why are you converting everything into a currency?? the month and week variables should be ints.

    Your overflow is occuring because your converting (or your calculation) is coming up with an invalid casting... eg. 123456789012345678 is too much for an int value.

    You should be doing your calculations on something else like a double and then converting the result of the calculation to a currency.

    Acutally your overflow is coming because you haven't defined time (edit: the same goes for amt). You are requesting it but it doesn't exist in your form. So you week and month variables are null. When you convert null to a currency it will overflow (a bit of a guess here).

    Having said that, all the other stuff written above still applies.

  3. #3
    Join Date
    Jan 2004
    Posts
    27
    Sorry, but what do you mean by I haven't "defined time"?

  4. #4
    Join Date
    Nov 2003
    Location
    Christchurch, New Zealand
    Posts
    1,618
    Code:
    time = Request.Form("txtDuration")
    amt = Request.Form("txtAmt")
    There is no txtDuration to request and no txtAmt to request....

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