Solved

ADO.NET DataColumn enumeration

Posted on 2004-10-08
7
954 Views
Last Modified: 2008-03-17
Dear all,

Let us assume that one of my MySQL tables has an enum column, defined as follows:


status ENUM( 'open', 'accepted', 'rejected' ) NOT NULL


I would like to define a DataColumn in my DataTable that matches this type. Unfortunately, a DataColumn cannot be of type ‘enumeration’. How am I going about this? How can I match this MySQL data type?

Many thanks in advance.

Best wishes,

Christian
0
Comment
Question by:csetzkorn
  • 2
7 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 12259831
VarChar (8)?

Bob
0
 

Author Comment

by:csetzkorn
ID: 12260089
VarChar(8)

Sure, but I would like to make it more strongly typed, to enforce that the value can only be 'open', 'accepted', 'rejected'.

BTW could someone recomend a good book, tutorial etc. on ADO.NET? I am a bit confused that I have to replicate the whole structure of the database structure in the DataSet object in order to update etc. I know that this has advantages, because the DataSet object can exist independently from the database.

Christian
0
 
LVL 96

Accepted Solution

by:
Bob Learned earned 63 total points
ID: 12260129
You will not be able to do this with a typed DataColumn.  Your code will have to handle that validation.

Essential ADO.NET
http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?userid=YG5kAlBAaK&isbn=0201758660&itm=4

Bob
0
 
LVL 4

Assisted Solution

by:Farshid-Zaker
Farshid-Zaker earned 62 total points
ID: 12261313
the better way is adding a column dynamically to your dataset of type int or byte. Have a mapping between your enumeration values and numbers 1, 2 and 3. Then add a constraint on that column, indicating it's range should be between 1 and 3.

Farshid.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

Suggested Solutions

IP addresses can be stored in a database in any of several ways.  These ways may vary based on the volume of the data.  I was dealing with quite a large amount of data for user authentication purpose, and needed a way to minimize the storage.   …
This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

860 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