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C# Datatable Disable Constraints


Jun 10, 2009 12:55 AM|oradev-ming|LINK This is a generic error message and occurs when you are making a lot changes to a TA (eg. Then I test this report in my development PC but no luck. One or more rows contain values violating non-null, unique, or... I was able to solve it by naming the DataColumn similar to the name on what was in the table. Source

As you drag your database table objects into the Dataset visual item, it reads each table definition from the underlying database and copies the constraints into the Dataset object exactly as Failed to enable constraints. some time we add fields in our query by adding table in query builder but some time we delete table in query builder this action only delete join statment inside query Seems that some very very tiny detail is conflicting between the methods of the adapter, rather than the stored procedures etc. http://stackoverflow.com/questions/7026566/failed-to-enable-constraints-one-or-more-rows-contain-values-violating-non-null

C# Datatable Disable Constraints

One or more rows contain values violating non-null, unique, or foreign-key constraints. The Fill/Get method of the TableAdapter is really creating a specific type of DataSet, and if you're missing fields, the binding doesn't work properly. MJ Reply Chaka44 None 0 Points 2 Posts Re: Failed to enable constraints. One or more rows contain values…." This is an annoying issue in 2005.

please xplain clearly. You can write a function to get errors from a dataset. i had same prob, cleared by checking this.. Datatable Constraints Why this happened is beyond me, but I have been altering the database and the DataSet a lot.

Not the answer you're looking for? I wish the error was more information. For example, we prefer not to have greetings and signatures in the answers (it's considered "noice", please see the FAQ). Clicking Here One or more rows contain values violating non-null, unique, or...

this error is due to ur changes to the databasae (SQL) after going through the disgner wizard. C# Datatable Remove Constraints One or more rows contain values violating non-null, unique, or foreign-key constraints. Wednesday, April 11, 2007 12:18 PM by Ed Giardina # re: DataSet hell - "Failed to enable constraints. The table being returned (single record) contained a NULL value in one of my BIT fields.

Relax Or Turn Off Constraints In Your Dataset

How to fix this problem? So, without a specific error message, I can only assume that it's a bug in Microsoft code. C# Datatable Disable Constraints Now add a RDLC report. Enforceconstraints = False If you've eliminated null values, then my guess is that the primary key columns is being duplicated.

Anyway, some of the ID fields in the table had Default values of DBNULL even though they were not nullable. dataTable.GetErrors(0).RowError or in C# it would be ? Proposed as answer by cmadore Friday, June 10, 2011 7:08 PM Friday, June 10, 2011 7:05 PM 0 Sign in to vote THANK YOU! One or more rows contain values violating non-null, unique, or foreign-key constraints Posted on September 5, 2014 by code display — 1 Comment ↓ Few days ago I found an error Failed To Enable Constraints Oracle

Should we kill the features that users are not using frequently, to improve performance? You can get then look at the RowError for each of these, which should tell you the column that's invalid along with the problem. Maybe this is all that is necessary instead of redoing an entire TableAdaptor in some cases? Remove the key attribute( not recommended since it actually defies the basic logic of a combo control) :doh: :doh: :doh: .I would recommend you to verify your data first.:thumbsup: Permalink

For C#, the command would be ? Visual Studio Command Window It works now, I'm happy again…(damn workarounds) thx alot everyone… Tuesday, March 20, 2007 1:33 PM by Dennis Alzoubi # re: DataSet hell - "Failed to enable constraints. make them or make new table adapters.

Any ideas?

Reply oradev-ming Member 100 Points 68 Posts Re: Failed to enable constraints.

Thanks, Roy in 2011. ================================ Sunday, October 03, 2004 4:16 PM by Drew Marsh # re: DataSet hell - "Failed to enable constraints. The column that I changed from "nvarchar(512)" to "nvarchar(MAX)" still had the 512 value on the MaxLength property so I changed to "-1" and it works!!. The primary key is (batch_no, crsnum, lect_code). C# Try Catch The MaxLength constraining facet is invalid - Value '-1' was either too large or too small for NonNegativeInteger.

EDIT: According to @PaulStock advice: I do what he said, and i get: ? Features: Maths Revision V1.0 | Maths Revision V2.0 | Solving Triangles Online Games: Connect4 | hangMan | masterMind | tictactoe Reply With Quote Oct 7th, 2013,07:00 PM #3 jmcilhinney View Profile One or more rows contain values violating non-null, Posting Permissions You may not post new threads You may not post replies You may not post attachments You may not edit your I had defined a query on a table via a table adapterand using a stored procedure.

See more: .NET2.0 C# .NET Hello Can any body help me?I bind a dataset to combobox. (siteName, siteId) At the run time I got following error."Failed to enable constraints. I had changed the length of a non-null column. Thursday, November 30, 2006 8:26 AM by Marja Klaver # re: DataSet hell - "Failed to enable constraints. Even when you cycle through rows in error, there's nothing to point back to the original row index or field values???

The fields not listed in the query were empty, and that's what the exception is barking about. Treat my content as plain text, not as HTML Preview 0 … Existing Members Sign in to your account ...or Join us Download, Vote, Comment, Publish. I ran out of constraints to check when I decided to point my project to an old known working DB and the same problem occurred. The time now is 10:32 PM.

Jun 09, 2009 02:42 AM|madhuripotru|LINK i cant understand your answer . After I included all the key columns and the columns defined as "not null" into my queries the problem disappeared completely. Good luck! One or more rows contain values violating non-null, unique, or foreign-key constraints." error Failed to enable constraints How do i solve foreign key constraint error Enable to fill values in datatable

I changed the second query to return the datacolumn2 but not use it and it solved the problem. Like AllowDbNull, NullValue etc. What reasons are there to stop the SQL Server? What was weird was when I executed the exact same query in different tool, repeated values nor null values weren't there.

That really solved my problem!  It wasn't an obvious solution so I'm glad to you got it before I did. Please click the link in the confirmation email to activate your subscription. Solution 4 Accept Solution Reject Solution What i can make out from the error is that your table return some duplicate data for a column which is declared as primary key in your One or more rows contain values violating non-null unique or foreign-key constr Reply FirasDaw None 0 Points 1 Post Re: Failed to enable constraints.