Re: MS Access DAO -> ADO.NET Migration

Framework 2

SQLCE 3.1 (Newest available - I think)

VS2005 Service pack Beta

Bought the book before I read your email.

The database is now copied with all the Data fields and values BUT, the
Primary key, AutoNumber is 'fudged' since in all my Access tables, the first
field, usually fldItemID, is the primary key and is an autonumber. In the
code, I know which is the first field.

The vb code does not manage to detect those specific properties.

field.Properties("ISAUTOINCREMENT").Value always equals False and so does
"KEYCOLUMN" even when I know that they are autonumber and PrimaryKey.

Any solution??

Garry




"William (Bill) Vaughn" <billvaRemoveThis@xxxxxxxxxx> wrote in message
news:ON7skO$CHHA.4620@xxxxxxxxxxxxxxxxxxxxxxx
The SQLCe engine requires the 2.0 Framework. Do you have that installed?
What version of Visual Studio and SQL Server is installed? I built
database tables from scripts and wrote my own batch processor to run them.
These are included in the EBook examples.

hth

--
____________________________________
William (Bill) Vaughn
Author, Mentor, Consultant
Microsoft MVP
INETA Speaker
www.betav.com/blog/billva
www.betav.com
Please reply only to the newsgroup so that others can benefit.
This posting is provided "AS IS" with no warranties, and confers no
rights.
__________________________________
Visit www.hitchhikerguides.net to get more information on my latest book:
Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition)
-----------------------------------------------------------------------------------------------------------------------

"Garry" <garrygrolman@xxxxxxxxx> wrote in message
news:O9uVYB8CHHA.3836@xxxxxxxxxxxxxxxxxxxxxxx
Bill,

Perhaps you have an answer to the post two lines up.

I have other problems concerning the actual updating of data from my
accumulating DataTable but the basics of defining the tables with
attendant columns in a new SSCE data base are still not completely
solved. However, it does build the SSCE database, just some of the
definitions are not included.

Also, SSEv31VSTools-ENU.exe with the SQL data management utilities will
simply not install on my machine.

Garry

"William (Bill) Vaughn" <billvaRemoveThis@xxxxxxxxxx> wrote in message
news:u%23yx11zCHHA.4680@xxxxxxxxxxxxxxxxxxxxxxx
I also share your frustration with the Microsoft doc. You'll also find
that Intellisense does not help either. That's because it leads you to
think that specific types, methods, properties and events are exposed
when they are not--you won't find out until runtime. To deal with this
issue, I wrote my first EBook that walks through the entire namespace and
documents how it really works. It's written for developers that are
somewhat familiar with the SqlClient namespace and ADO.NET in general
(and those that have read my Hitchhiker's Guide to Visual Studio and SQL
Server book. This book is available at
http://www.hitchhikerguides.net/EBooks/Titles/5582.aspx.

Incidentally, Microsoft chose to change the name from SQL Server
Everywhere Edition to SQL Server 2005 Compact Edition about three weeks
ago. This version of the SQLCe DBMS engine has been tuned to run in a
Windows Forms environment. It's a fully relational database that
supports a subset of the TSQL SQL syntax. It's easy to deploy (just copy
6 DLLs), is fully encryptable (so it's safer for data you take to the
field) and has twice the capacity of JET (4GB). SQLCe is also designed
to act as a Subscriber to a SQL Server-hosted Publication. This can make
it even easier to construct a distributed architecture around SQLCe. MS
is still doing work on the Visual Studio and SQL Server Enterprise
Manager development tools but the EBook shows how to get around these
limitations until the next SP or Orcas ships.

Early next year, I'll be publishing the next in my series of EBooks.
This time on SQLCe Replication. I'm waiting for MS to finish work on a
new replication scheme that promises to be easier to use than their
current approaches.

--
____________________________________
William (Bill) Vaughn
Author, Mentor, Consultant
Microsoft MVP
INETA Speaker
www.betav.com/blog/billva
www.betav.com
Please reply only to the newsgroup so that others can benefit.
This posting is provided "AS IS" with no warranties, and confers no
rights.
__________________________________
Visit www.hitchhikerguides.net to get more information on my latest
book:
Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition)
-----------------------------------------------------------------------------------------------------------------------

"Garry" <garrygrolman@xxxxxxxxx> wrote in message
news:%23SURfWtCHHA.4928@xxxxxxxxxxxxxxxxxxxxxxx
I had your problem basically and am working at the moment to transfer
existing Access 97 databases, (with data), to SQL Server Everywhere, the
new/old database referred to by William (Bill) Vaughn. He suggested to
me that I use this new database for .NET 2005 development where the
DataBase requirements are similar to what I had in a VB6/Access97
desktop application.

I am working on an app to migrate the Access 97 database to the SSEv
database and it is going relatively smoothly. Although, there are some
problems as I have defined in a post a little above yours.

I do not expect to edit relationships within the predefined database OR
re-define existing tables BUT, I have seen reference to code which can
do this.

If you try to find code samples - do yourself a favor, use Google as
William (Bill) Vaughn valiantly suggests. Microsoft help is, in many
cases, gibberish, which will not solve your query and will just make
you angry and frustrated. I wonder when Microsoft will catch on a
construct a serious library of code samples instead of the meager
offerings available.

If any of the Google search results take you to forums which require
that you 'join', be careful. Some of these forums even want you to pay
to join without you knowing if a solution is actually available there.

Be careful about using Sponsored Links as these must have some
financial incentives involved otherwise they would not be there. It
costs money to put a Sponsored Link on a Google Search result page.
Every click means that money is earned by Google.

If you want to go down this route, use 'Reply to Sender' as well as
'Reply to group' and I will send you my code which is a near completed
application in VB.NET. I do not want to post my email address here.

I need an exchange of info and opinions from another programmer who is
having similar, if not identical problems.

Garry


<moomoofatcow@xxxxxxxxxxx> wrote in message
news:1163796070.268114.323610@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have an VB6 program that I wrote that access Microsoft Access
databases using DAO. DAO has methods and properties that are Access
specific (such as viewing and editing relationships or indexes on the
tables) I want to write a new version of the program in VB 2005, and I
want to use ADO.NET to access the data. Are there ways of changing the
indexes or relationships of the MS Access database using ADO.NET? Or
do
I still need to use DAO to perform these operations?

As a side note, with a few tests that I've done already with some
queries, it seems like DAO is much faster than ADO.NET at running
queries and returning results. I am using the DataReader...does anyone
have any information about the differences etc? Thanks in advance...











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