Solved

VB.NET - SQL Server

Posted on 2004-09-28
9
695 Views
Last Modified: 2012-06-27
Hi,

I have a few questions.

1. Does anyone know where I can find data type comparison chart between VB.NET and SQL Server data types.

2. I have a piece of code which uses a data reader to bring in a set a records, I loop through each record and assign it to a class then add the class to an array list. For each field I check it is not null, if it is not null I convert it to the relevant class property type.

The problem I have is this, when the field is a sql server timestamp or datetime can I use the System.Convert class to convert them or do I need something else?

The class properties are declared as follows

timestamp = object
datetime = date

0
Comment
Question by:rocky050371
9 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 12170012
Do you have some relevant code to highlight what you are saying?

Bob
0
 
LVL 7

Accepted Solution

by:
natloz earned 43 total points
ID: 12170026
you can simply use

Dim dteDate as DateTime <--------- for the SQL DateTime

and I believe that SqlBinary is the datatype in VB.Net that is equivilant to timestamp
0
 

Assisted Solution

by:brunka
brunka earned 41 total points
ID: 12170971
0
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

 

Author Comment

by:rocky050371
ID: 12173335
Thank you for the link, but I am left with a decision to make, does anyone know where it is better to stick to SQL data types throughout the program, i.e declared in the class etc than use VB's own internal data types. For example if the data field is varchar in SQL Server is it better to assign it to a property whose data type is string or SQLString? Just wondering whether this will cause any problems while manipulating an array of classes or binding which is done higher up the architecture.




0
 
LVL 96

Assisted Solution

by:Bob Learned
Bob Learned earned 41 total points
ID: 12173349
IMHO it is better to stick to data types that are base types, such as String, Integer, etc.  A lot of functions don't understand what an SQLString type is.

Bob
0
 
LVL 7

Expert Comment

by:natloz
ID: 12174205
I agree with Bob...I have had problems with SQLDataTypes in VB.Net...I generally only use the SQL datatypes when passing to stored procedures (at the time I pass to the stored proc I make sure it is in a compatible VB.Net datatype)...it will crash if it isn't!
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

Article by: jpaulino
XML Literals are a great way to handle XML files and the community doesn’t use it as much as it should.  An XML Literal is like a String (http://msdn.microsoft.com/en-us/library/system.string.aspx) Literal, only instead of starting and ending with w…
I think the Typed DataTable and Typed DataSet are very good options when working with data, but I don't like auto-generated code. First, I create an Abstract Class for my DataTables Common Code.  This class Inherits from DataTable. Also, it can …
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…

837 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