CFSELECT With XML Forms

Question

I'm using cfselect with a "Please select..." option before
the query is displayed. This all works fine except my option as a
value="" which get translated in the rendered HTML as option
value="""" when what I want is a CF [empty
string].
Any thoughts how to return a empty string?
TIA

Answer 1

The following code returns an empty string as you can see
from the struct output:
<!--- Get the employee names from the database. --->
<!--- Use SQL to create a Name field with first and last
names. --->
<cfquery name = "GetAllEmployees" dataSource =
"cfdocexamples">
SELECT Emp_ID, EMail, Phone, Department, FirstName,
LastName, FirstName +' '
+lastName as Name
FROM Employees
GROUP BY Department, Emp_ID, EMail, Phone, FirstName,
LastName, FirstName
</cfquery>
<h2>cfselect Example</h2>
<!-- The cfif statement is true if the form was submitted.
Show the selected names. --->
<cfif IsDefined("form.employeeid")>
<!--- The form was submitted. --->
<h4>You Selected the following employees</h3>
<cfif form.employeeid IS "">
<!--- Select All option was selected. Show all employees.
--->
<cfoutput query="GetAllEmployees">
#name#<br>
Email: #email#<br><br>
</cfoutput>
<cfdump var="#form#">
<cfelse>
<!--- Use a query of queries to get the data for the
selected users.
Form.employeeid is a comma-delimited list of selected
employee IDs. --->
<cfquery name = "GetSelectedEmployees" dbtype="query">
SELECT Emp_ID, EMail, Phone, Department, FirstName,
LastName, FirstName
+' ' +lastName as Name
FROM GetAllEmployees
WHERE Emp_ID in (#form.employeeid#)
</cfquery>
<!--- Display the names and e-mail addresses from the
query. --->
<cfoutput query="GetSelectedEmployees">
#firstName# #lastName#<br>
Email: #email#<br>
<br>
</cfoutput>
</cfif>
</cfif>
<!--- The cfform tag posts back to the current page.
--->
<h3>Select one or more employees</h3>
<cfform action = "#CGI.SCRIPT_NAME#" format="xml">
<!--- Use cfselect to present the query's LastName
column, grouped by department.
Allow Multiple selections.--->
<cfselect
name = "employeeid"
size = "1"
multiple="yes"
required = "No"
query = "GetAllEmployees"
group="Department"
display ="name"
value ="emp_id"
queryPosition="Below" width="100">
<!--- Add an option to select all employees. --->
<option value = "">Select All</option>
</cfselect>
<cfinput type="submit" name="submit" label="Go"
value="Go">
</cfform>
struct (cfdump) output
EMPLOYEEID [empty string]
FIELDNAMES EMPLOYEEID,SUBMIT
SUBMIT Go