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Refresh ASP page possible?

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csiwa28

csiwa28

Programmer
Apr 12, 2001
177
Suppose I have an asp page with a list box with several choices (A, B, C) and if a user selects a choice then another list box on that same page will be populated with certain information?
 
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First thought would be to have a condition in your page that checks if a passed parameter is set (eg ShowList2=True) then when the condition is checked, populate the list with what you wish, possibly with other parameter values passed.

Brian
 
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This requires pure JavaScript.. Load this into your browser, examine the script and you should be able to determine how it's done..


<html>
<head>
<script Language=&quot;JavaScript&quot;>
<!--
function populateList2(form_ref) {

if (form_ref.months.value == &quot;&quot;) {
// IF &quot;SELECT MONTH&quot; IS SELECTED IN MONTHS LIST
form_ref.holidays.length = null
form_ref.holidays.options[0] = new Option(&quot;No Events Listed&quot;,&quot;&quot;)
} else {
// OTHERWISE EXAMINE SELECTION AND POPULATE 2ND LIST
if(form_ref.months.value == &quot;12&quot;) {
// CLEAR THE LIST
form_ref.holidays.length = null
// ADD OPTIONS HERE
form_ref.holidays.options[0] = new Option(&quot;Christmas&quot;,&quot;xmas&quot;)
form_ref.holidays.options[1] = new Option(&quot;Christmas Eve&quot;,&quot;xmaseve&quot;)
form_ref.holidays.options[2] = new Option(&quot;New Years Eve&quot;,&quot;nyreve&quot;)
form_ref.holidays.options[3] = new Option(&quot;My Friends Birthday&quot;,&quot;joesbday&quot;)
}
if(form_ref.months.value == &quot;4&quot;) {
// CLEAR THE LIST
form_ref.holidays.length = null
// ADD OPTIONS HERE
form_ref.holidays.options[0] = new Option(&quot;Good Friday&quot;,&quot;gfd&quot;)
form_ref.holidays.options[1] = new Option(&quot;Easter Sunday&quot;,&quot;esunday&quot;)
form_ref.holidays.options[2] = new Option(&quot;April Fools Day&quot;,&quot;apr1&quot;)
}
if(form_ref.months.value == &quot;11&quot;) {
// CLEAR THE LIST
form_ref.holidays.length = null
// ADD OPTIONS HERE
form_ref.holidays.options[0] = new Option(&quot;PGA Skins Game&quot;,&quot;skins&quot;)
form_ref.holidays.options[1] = new Option(&quot;Thanksgiving&quot;,&quot;thxgvng&quot;)
}
}
}



// -->
</script>
</head>

<body>
<form>
Months: <select name=&quot;months&quot; onChange=&quot;populateList2(this.form);&quot;>
<option value=&quot;&quot;>Select Month</option>
<option value=&quot;12&quot;>December</option>
<option value=&quot;4&quot;>April</option>
<option value=&quot;11&quot;>November</option>
</select><br><br>
Events: <select name=&quot;holidays&quot;>
<option value=&quot;&quot;>No Events Listed</option>
</select>
</form>
</body>
</html>


Hope this sheds some light on the subject..

TW

 
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