?
Solved

"Unknown Error"

Posted on 2002-05-19
2
Medium Priority
?
268 Views
Last Modified: 2010-04-04
Hi,
I have a database in mssql
I connect to the DB using TADOTables
along with the normal fields I have Lookup fields as well
when I am running my application Delphi gives me many
exceptions with the string : "Unknown Error" - which by delphi help books should never appear. this error accours but the user doesnt see a thing (not normal exception)
altough the code is not in a try except block. when Im trying to debug the problem - I cannot do it it just appear on the create of the datamodule (I dont have any code written in the on create or on any table events).
I noticed that when Im taking of the lookup fields from all the tables I dont recieve the Error (not a specific field but all of them , I tried taking them off one by one - didnt help).
does someone knows what could be the problem?
did anyone ever had this bizzare error?
if you know what to do or you some suggestions please
answer me
thanks,
bagon
0
Comment
Question by:Bagon
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 4

Accepted Solution

by:
nestorua earned 480 total points
ID: 7019796
HI, Bagon,
As for Lookup fields those "Unknown error" occurs because
of NULL field values
(The field Value of your table which references to the lookup Table is NULL).
Sincerely,
Nestorua.
0
 
LVL 1

Expert Comment

by:pnh73
ID: 9006004
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Accept answer from nestorua

Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Paul (pnh73)
EE Cleanup Volunteer
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses
Course of the Month10 days, 3 hours left to enroll

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question