Hello,
we are fighting with constraint error in dataset. The dataset we use is
quite complex (about 30 tables) as well as stored procedure for returning the
data.
Now we are getting the famous excpetion:
"Failed to enable constraints. One or more rows contain values violating
non-null, unique, or foreign-key constraints."

We know what does it mean but it is difficult to track down where exactly
the problem is in data. Is there any way how to get more specific message or
detail for which constraint the error occured (like e.g. 'PK violated on
table t1') instead of this generic message?

Thanks a lot
eXavier

If I remember correctly you should check DataRow.RowError property of each
row to find out which row caused the error.

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Miha Markic [MVP C#, INETA Country Leader for Slovenia]
RightHand .NET consulting & development www.rthand.com
Blog: blog.rthand.com


"eXavier" <(E-Mail Removed)> wrote in message
news:CCDB5340-6444-4C48-95EA-(E-Mail Removed)...
> Hello,
> we are fighting with constraint error in dataset. The dataset we use is
> quite complex (about 30 tables) as well as stored procedure for returning
> the
> data.
> Now we are getting the famous excpetion:
> "Failed to enable constraints. One or more rows contain values violating
> non-null, unique, or foreign-key constraints."
>
> We know what does it mean but it is difficult to track down where exactly
> the problem is in data. Is there any way how to get more specific message
> or
> detail for which constraint the error occured (like e.g. 'PK violated on
> table t1') instead of this generic message?
>
> Thanks a lot
> eXavier

Hello eXavier,

We can set the Data.EnableConstraints to false before updating data back to
the data base. After that, we can check the HasErrors property for each
DataTable in the data set and then invoke the GetErrors method on the
tables reporting errors. The GetErrors returns a collection of DataRows and
you can invoke the .RowError property on the each of the error-stricken
rows to find out just exactly what the problem is.

Please see the discussion in the following link,
http://weblogs.asp.net/rosherove/arc...ll-_2D00_-_220
0_Failed-to-enable-constraints.-One-or-more-rows--contain-values_2E002E002E0
02E002200_.aspx

Let me know if you have any future questions on this and have a nice
weekend!

Best regards,
Colbert Zhou (colbertz @online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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