Multiple selections in dropdown

I have a comma delimited list of Id's called "myIDS". It contains lists such as:
4,11,30,

I create an ASP dropdown list such as:

<select name="shipList" class="input" size="6" multiple>
<option value="4" >Name1</option>
<option value="11" >Name2</option>
<option value="30" >Name3</option>
<option value="34" >Name4</option>
<option value="26" >Name5</option>
<option value="8" >Name6</option>
<option value="13" >Name7</option>
</select>

I need to set the options in the dropdown to "Selected" if the value is in the comma delimited list = the values in the list. Keep in mind, the dropdown is generated dynamically from a DB.

Any ideas?
AS_SSURAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Om PrakashCommented:
you can use instr to do this
<option value="4" <% IF InStr(myIDS,"4") > 0 THEN response.write " selected" %>>Name1</option>
<option value="11" <% IF InStr(myIDS,"11") > 0 THEN response.write " selected" %>>Name2</option>

similarly you can add for other options


0
AS_SSURAuthor Commented:
I tried "inStr" but 4 and 14 both have a "4" in the Str.
0
Om PrakashCommented:
<%
dim myIDS
myIDS = "4,11,30,"
%>

In this case 4 will be selectetd but 14 and 41 will not

<option value="4" <% IF InStr(myIDS,"4") > 0 THEN response.write " selected" %>>Name4</option>
<option value="41" <% IF InStr(myIDS,"41") > 0 THEN response.write " selected" %>>Name41</option>
<option value="14" <% IF InStr(myIDS,"14") > 0 THEN response.write " selected" %>>Name14</option>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sybeCommented:
steps:

1. create an array from the string MyIDS

<%
arrMyIds = Split(myIDS, ",")
%>

2.
Use attached function IsElementOfArray() to check if it's there. Oh, and I have a standard function IIF(), which is quite useful (and present in most languages, but not in VBScript)

<option value="4" <%=IIF(IsElementOfArray("4", arrMyIds, "selected")%>>Name4</option>
<option value="14" <%=IIF(IsElementOfArray("14", arrMyIds, "selected")%>>Name4</option>

Note that it makes a different if "4" is a String or a Number, because "4" = 4 returns False.

=============

Alternatively, if you want to use the Instr() method as above, use it as this:

<%
' encapsulate thew myIDS string with comma's
myIDS = "," & myIDS & ","

' now search for ",4," or ",14," etc

<option value="4" <% IF InStr(myIDS,",4,") > 0 THEN response.write " selected" %>>Name4</option>
%>


Function IsElementOfArray(ByVal v, ByVal a)
    Dim e
    IsElementOfArray = False
    If Not IsArray(a) Then Exit Function
    For Each e In a
        If v = e Then IsElementOfArray = True: Exit For
    Next
End Function


Function IIf(bCondition, TrueValue, FalseValue)
    IIf = FalseValue
    If bCondition Then IIf = TrueValue
End Function

Open in new window

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP

From novice to tech pro — start learning today.