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add items to a listbox

How to use VBscript add items to an empty listbox when load the web page?
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jyx
Asked:
jyx
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1 Solution
 
daniel_cCommented:
Try this:

<HTML>
<BODY ONLOAD="document.form1.sel1.length=0">
<FORM NAME=form1>
<select name=sel1>
                                   <option value=1>1
                                   <option value=1>2
</select>
</FORM>
</BODY>
</HTML>
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dclaryCommented:
If you've got a table you want to populate a listbox with you could use. Now, normally I'd encapsulate the code into a function and keep it at the front of the asp doc, but it's up to you.. this is the quick and dirty way...(Code assumes you know how to set up and open recordsets already)

<Select Name=sel1>
<%
   response.write vbcrlf
   set adors = adocon.openrecordset("Select listboxid, listboxtext from listtable" , 0, 1)
   do until adors.eof
      response.write "<OPTION value=" & adors.fields(0).value & ">" & adors.fields(1).value & "</OPTION>"
      adors.movenext
   loop
   response.write vbcrlf
%>
</select>
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OtanaCommented:
for dynamic loading, put

<% Do While Not RS.EOF %>
    <option value='<%= RS.Fields("FieldName1").Value %>'>
        <%= RS.Fields("FieldName2").Value %>
    </option>
<%  RS.MoveNext
    Loop %>

in case you use a recordset. make sure to use the closing tags </option>, it will save you a lot of potential trouble.
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OtanaCommented:
and also use the single quotes for value, because when your field value consists of two parts with a space in between,, the value will only contain the first part.
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daniel_cCommented:
ooopsss... i think i misunderstood the question... :P
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jyxAuthor Commented:
Thanks.
I only want to use HTML, I mean only use client side VBSCRIPT (NO ASP, NO "response.write", no "<% %>"). It's my fault, maybe I should put this question under HTML subject.
I used an OCX to get the printer setting information of the client computer and put these information into an Array, then I want to show it in the listbox using VBScript.
The following is my code, but it always give me error "object required: document.form1.list2(...)". list2 is the name of my listbox.

<script language = vbscript>

Sub window_OnLoad()
dim printername
dim x
printername = split(SystemInfo.GetAllPrinters,"~")

for x=0 to ubound(printername)
document.form1.list2.length =  document.form1.list2.length +l
document.form1.list2(x).value= printername(x)
next

end sub

</script>

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daniel_cCommented:
try this example (hope I won't misunderstand again this time):


<html>
<head><title></title></head>
<script language="javascript">
<!--
function Pop(){
var FullName = document.form.Title[document.form.Title.selectedIndex].value;
     FullName += ", ";
     FullName += document.form.surname.value;
     alert(document.form.AddedList.length);
     document.form.AddedList.options[document.form.AddedList.length] = new Option(FullName,FullName);
     document.form.AddedList.selectedIndex = 0;
     document.form.AddedList.reset;
}

function rem(){
     document.form.AddedList.remove(document.form.AddedList.selectedIndex);
     document.form.AddedList.reset;
}
//-->
</script>
<body>
<form name="form">
<select name="Title">
<option value="Mr">Mr
<option value="Miss">Miss
<option value="Mrs">Mrs
</select>
<input type="text" name="surname">
<select name="AddedList">
<option value="None">--- Select One ---
</select>
<input type="button" value="Add" onclick="Pop()">
<input type="button" value="Remove" onclick="rem()">
</form>
</body>
</html>


Cheers,

^_^
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dclaryCommented:
Bah, html! ASP is the way to be! Buwahaha!

=)


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daniel_cCommented:
dclary,read jyx's last comment:
"I only want to use HTML, ..."
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EDDYKTCommented:
Try this

Use Span tag

on your form
<span id="Span1">
</span>

<script language = vbscript>

Sub window_OnLoad()
dim printername
dim x, str
printername = split(SystemInfo.GetAllPrinters,"~")

str = "<SELECT MULTIPLE size=5 id=List2 name=List2 style='FLOAT: right; width:100%'>"

for x=0 to ubound(printername)
Str = str & "<option>" & printername(x) & "</option>"
next

str = str & "</SELECT>"

span1.innerhtml = str
end sub

</script>
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puranik_pCommented:
i think a simple javascript function can serve the purpose.
i'm pasting some of my code here.
hope it helps...
here we go...
<script>
     function PopList()
     {
          var i;
          for(i=0;i<document.PeriodForm.START.length;i++)
          {
               {
                    document.PeriodForm.START.options[i] = null;
                                   i--
               }
          }
               var ArrPeriod = new Array
               ArrPeriod[0] = "Select Week"
               for(i=1;i<=52;i++)
               {
                    ArrPeriod[i] = "Week" + i
               }

          for(i=0;i<=ArrPeriod.length - 1;i++)
          {
               var optionValue = ArrPeriod[i]
               var newOptionName = new Option(optionValue);
               document.PeriodForm.START.options[document.PeriodForm.START.length] = newOptionName;
          }
}
</script>
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puranik_pCommented:
call this function in body onload or wherever you like and you can get your list.bingo!
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jyxAuthor Commented:
I appreciate all your guys' help, they are all valuable. But EDDYKT's answer is exactly what I want!
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jyxAuthor Commented:
But another problem, how to retrieve the value which I selected in that listbox?
thanks
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jyxAuthor Commented:
Nothing is wrong now. I retieved the selected value.
thanks.
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