Cfgrid not updating database

Question

Hello,
I copy and pasted some code from WACK coldfusion book and i
can insert and delete lines on the screen, but when i refresh the
screen the changes didnt apply.
Any suggestions?
Am i supposed to add an update button also?
<!---
Name: grid2.cfm
Author: Ben Forta ([email protected])
Description: Flash editable data grid example
Created: 12/22/04
--->
<cfquery datasource="vdinfo" name="tableinfo">
Select * from uos
order by cwpartnbr
</cfquery>
<!--- Display data grid --->
<cfform format="flash" action="formdump.cfm">
<!--- Data grid --->
<cfgrid name="uos2"
selectmode="edit"
query="tableinfo"
insert="yes"
delete="yes"
height="400" />
</cfform>

Answer 1

I have a similar problem where the update only effects some
of the records in the database - there are 4 records in the
database and I am able to only modify the 2nd and 3rd record -
changes made to the other records are ignored. The code follows:
<cfif isDefined("Form.Update")><!--Have we been
asked to update the database? -->
<cfgridupdate datasource="GISdb"
tablename="DistrictContacts" grid="g_Contacts">
Update was done.
</cfif>
<cfquery name="GetData" datasource="GISdb">
SELECT *
FROM DistrictContacts
</cfquery>
<cfform name="grid_test" action="Contacts_admin.cfm"
style="text-align:center" method="post">
<cfgrid name="g_Contacts" query="GetData"
colheaderbold="yes" selectmode="edit" width="100%" picturebar="yes"
delete="yes" sort="yes" insert="yes" maxrows="30"
selectcolor="##FF0000">
</cfgrid>
<cfinput type="submit" name="Update" value="Update the
database" tabindex="1">
</cfform>
There does not appear to be anything unique about the records
that would exlplain this. The result applies to any of the fields.
Any ideas?