473,756 Members | 3,566 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Checking for Existence in RS

I have a simple form where a user enters their email address, which then
passed them to a 2nd page where the email address entered is used to filter
a recordset.

How can I set up an IF statement so it checkes every record in the
recordset, and if the email address entered does not match any record
redirect to another page?

Thanks
Jul 22 '05 #1
3 1263
'// Code to connect to your database
'//.........
Dim blnIsPresent
blnIsPresent = False
Do While Not objRst.EOF
If lcase(objRst("f ldE_Mail"))=lca se(strStringToM atch) Then
'// E-mail is present
blnIsPresent = True:Exit Do
End If
Loop
'// Code to close your DB connection

If blnIsPresent = False Then Response.Redire ct "does_not_exist .asp"

--

Regards

Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk

Keeping it FREE!

"Keith" <@.> wrote in message news:uc******** ******@TK2MSFTN GP10.phx.gbl...
I have a simple form where a user enters their email address, which then
passed them to a 2nd page where the email address entered is used to filter a recordset.

How can I set up an IF statement so it checkes every record in the
recordset, and if the email address entered does not match any record
redirect to another page?

Thanks

Jul 22 '05 #2
Keith wrote:
I have a simple form where a user enters their email address, which
then passed them to a 2nd page where the email address entered is
used to filter a recordset.

How can I set up an IF statement so it checkes every record in the
recordset, and if the email address entered does not match any record
redirect to another page?

Don't loop through a recordset to see if a record exists, that's what a
WHERE clause in a sql statement is for. A recordset loop can be thousands of
time slower than a sql statement with a filter.

I'd like to provide a specific example, but I don't know what database you
are using. Please supply the database type and version whenever you ask a
database-related question. It is almost always relevant.

Bob Barrows

--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"
Jul 22 '05 #3
Thanks both

I have sorted this now
Jul 22 '05 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
5149
by: GujuBoy | last post by:
i want to check to see if a certain program is installed on my windows box using python. how can i do that...(ie, i want to see if "word" is installed) please help
1
3961
by: The Plankmeister | last post by:
Is it possible to check for the existence of an element? I have a dynamic page which may or may not have a <div> holding a bunch of thumbnails, and I want a function to check for the existence of the <div>. Doing: blah = getElementById("thumbnails"); Generates an error.... I was hoping it would just return false or something... Is there a way of doing this? P.
1
1489
by: Xeno Campanoli | last post by:
I'm having a hard time checking existence of windows. The only thing I found on this is page 224 of Rhino. Why is there no function to check this? Is there a publication on this part of the protocol I can read as a newbie? Please can someone make a suggestion one what to read or try? Sincerely, Xeno -- Community FIRST, Then Trade! http://www.eskimo.com/~xeno, xeno@eskimo.com, Xeno Campanoli
2
2043
by: mike | last post by:
I had a form like below that validated that a file was there before it would submit. <form name="attach" method="POST" action="run_this_pgm.cfm" enctype="multipart/form-data" onSubmit="return(validateData(this))"> <input type="file" name="txtFileToUpload"> <input type="submit" name="btnAdd" value="Add" class="form_button"> </form> function checkFile(frm)
17
2731
by: Christopher Benson-Manica | last post by:
All right, since my previous idea (calling functions through a wrapper) was apparently so awful no one could suggest any improvements, I'll try a different tack. My end goal is to make detecting and reporting script errors easy and painless. This could be accomplished easily if window.onerror were ubiquitous, but it is not. My new idea is to hack together something superficially resembling C's assert() macro, perhaps something like ...
5
19538
by: Richard L Rosenheim | last post by:
What's the proper technique for checking for the existence of an attribute within a node? Lets say I did a SelectSingleNode which returned this element: <AnAddress city="San Francisco" state="CA" /> What's the best why of determining if the attribute zipcode exists in this node? If I try accessing the attribute with code like: ZipCode = myNode.Attributes("zipcode").Value
1
3823
by: Vikas Rana | last post by:
Hi, I am having trouble checking the existence of a temporary table. Neither of pg_tables or pg_class list the temporary tables. Is there any way to get the list of temporary tables? Thanks, Vikas
4
2384
by: Patient Guy | last post by:
Does anyone have any coding rules they follow when doing argument checking? When arguments fail during check, do you return from the call with an ambiguous return value, or do you throw exceptions?
1
3328
by: AndyB | last post by:
I have found a lot of material on removing duplicates from a list, but I am trying to find the most efficient way to just check for the existence of duplicates in a list. Here is the best I have come up with so far: CheckList = for x in self.__XRList] FilteredList = filter((lambda x:x != 0),CheckList) if len(FilteredList) len(sets.Set(FilteredList)): return False The first statement pulls the slice out of a matrix I need to check.
46
1853
by: John | last post by:
Hi How can I check for existence of a certain table by name in and access database and if the table exists find the number of records in it? I guess I can access this information by setting up a dataset for the database but I am wondering if there is a quick way to find this. Thanks
0
9456
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9275
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10034
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9872
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
9713
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
7248
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
5142
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
5304
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
3358
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.