Upgrading to .NET 2.0 error message

I just upgraded my ASP.NET application from v1.1 to v2.0, and now when I run my application, I get the following error message:
Cannot create a DataRelation if Parent or Child Columns are not in a DataSet.
What does this mean, and how can I get my application working again (hopefully by changing as little code as possible)? Thanks.
tjgquickenAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

jef06Commented:
When you upgraded your code it might have not convert properly one of your dataset, check that all the column are present in them.
0
DreamMasterCommented:
Are you by any chance using a property "Sorted=True" in the control that generates this problem? In that case check whether or not the dataset gets sorted. It should be sorted with this property set to true..

Regards,
Max.
0
tjgquickenAuthor Commented:
Here's the line of code that's throwing the exception:
fileGuestRel = new DataRelation( "fileGuestRel", filesTable.Columns["file_id"], guestTable.Columns["file_id"] );
Both filesTable and guestTable are of type DataTable, not DataSet. Is there an easy way to convert them to DataSets, or is there another DataRelation constructor that takes DataTables as parameter. Again, this worked fine in v1.1, so I don't really want to change anything major if that can be avoided. Thanks.
0
CompTIA Cloud+

The CompTIA Cloud+ Basic training course will teach you about cloud concepts and models, data storage, networking, and network infrastructure.

jef06Commented:
Of course you can have DataRelation only in DataTable, could you tell me if the table filesTable and guestTable have the file_id column, also do they have EnforceConstraint  =True;
If you are building the DataTbale dinamillcly could you post that code too Thank you
0
tjgquickenAuthor Commented:
In my code, right before the line that constructs the DataRelation, I have
HttpContext.Current.Trace.Write("filesTable.Columns[\"file_id\"] = " + filesTable.Columns["file_id"].ToString());
HttpContext.Current.Trace.Write("guestTable.Columns[\"file_id\"] = " + guestTable.Columns["file_id"].ToString());

The trace output on my web page reads:
filesTable.Columns["file_id"] = file_id
guestTable.Columns["file_id"] = file_id
So I assume that both tables have a "file_id" column.

Neither DataTable is dynamically created. They're both hard-coded SQL queries to a MSSQL database.
I don't know how to tell if EnforceConstraint=True. How do I do that?
0
jef06Commented:
fileGuestRel = new DataRelation( "fileGuestRel", filesTable.Columns["file_id"], guestTable.Columns["file_id"], /*you have a flag constraint here*/ false );
0
jef06Commented:
Also the DataTables are they in the same DataSet?
0
tjgquickenAuthor Commented:
As for EnforceConstraint, I used the version of the constructor that takes no boolean variable, so it's whatever the default is. I don't have any DataSets defined in my code, so again, I think it's whatever the default is -- whether they all go into the same DataSet or different DataSets.
0
jef06Commented:
Ok it look like we needs to have this two DataTable in one DataSet.

Look at that link
http://blogs.netindonesia.net/ridi/archive/2006/01/02/8244.aspx
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
.NET Programming

From novice to tech pro — start learning today.