Concurrency Violation Updating A SQL Database With A Dataadapter?

Nov 20, 2009

I'm having some trouble updating changes I made to a datatable via a dataadapter. I am getting "Concurrency violation: the UpdateCommand affected 0 of 10 rows"

'Get data
Dim Docs_DistributedTable As New DataTable("Docs_Distributed")
Dim sql = "SELECT DISTINCT CompanyID, SortKey, OutputFileID, SequenceNo, DeliveredDate,

[code].....

ADVERTISEMENT

Concurrency Violation: UpdateCommand?

Jan 28, 2011

My users are getting this error when trying to update the database:

"Concurrency violation: UpdateCommand affected 0 of the expected 1 records"

All the users are doing is clicking a button which updates a record.No two users are updating the same record or even within the same column. They could be updating within the same row but still not the same record.It seems to be happening when the program is open for a little while and they come back and try to update the database through the program. I have read a little bit about this error but none seem to lead to a clear solution.It seems like the database connection is timing out due to inactivity?Here is my update command:

vb.net

Private Sub btnComplete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnComplete.Click
        Me.txtComplete.Text = Date.Today[code].....

View 13 Replies View Related

VS 2010 Concurrency Violation

Dec 15, 2011

I'm having an issue with a concurrency violation when I save my data(only on one form). All other data forms are working fine. This form has a lot of code, so to isolate the problem I added a new form to the project and dragged the table from my datasource, in detail, to the form. this is the only code in the form,

[Code]....

View 14 Replies View Related

Concurrency Violation With IDE Generated Objects

Jun 12, 2009

I am trying to make a simple demo of a DataGridView bound to a database table. I want to add a row, delete a row, and save the table. I used the IDE to do just about everything. It created the BindingSource when I set the datasource of the DataGridView to a table of a DataSource I added to the project.

Now the only code looks like this:
Public Class Form1
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....

I set the AutoIncrementStep to 1 in my Key field in the dataset (the .xsd). I left the Key field visible in the DataGridView and it seems to be adding the correct Key when a row is added. However, I still occasionally get the "concurrency violation" error if I just mess around with these 3 buttons. Any idea why/how to prevent that?

View 2 Replies View Related

DataGridView Update/Concurrency Violation?

Mar 17, 2009

get around the following problem please?I have an Access database which can be accessed by more than one instance of my application (which is) a Form with a DataGridView on it.I populate the DGV with

Form1.Validate()Form1.CHECKLISTBindingSource.EndEdit()Form1.CHECKLISTTableAdapter.Update(Form1.chkDataSet.CHECKLIST) The Access Database can then be updated via the DGV by a button click (which runs the code above (to copy across the latest copy of the DB) and then runs the code below to copy your changes to the DB)

Form1.CHECKLISTTableAdapter.Fill(Form1.chkDataSet.CHECKLIST)
Form1.DataGridView4.DataSource = Form1.CHECKLISTBindingSource
Form1.DataGridView4.Refresh()

The Access table is basicaly a 'Time' Column and a 'Name' Column.

[Code]...

View 4 Replies View Related

Getting Concurrency Violation UpdateCommand Affected?

Aug 24, 2011

I'm trying to update a Access database. I'm new to this and I've reviewed an Ado tutorial early today. I'm trying to apply what is taught but I'm getting an error message and I can't seem to get passed it.

In my code I have an Add, Update, and Delete process. The Add and Delete processes work just fine. It is only when I go to update the database that I get the following message."Concurrency violation: the UpdateCommand affected 0 of the expected 1 records."

[Code]...

View 1 Replies View Related

VS 2010 Concurrency Violation In Dataset

Oct 26, 2010

When my project starts, it first checks for the existence of certain rows in the database. During testing, I often delete these rows, as they get kind of messed up over time due to all the odd tests I am running. For that reason, if when the project starts, if the records are not there, the program first creates them.The records are pretty static over the lifetime of the project, so they are held in a dataset for ready access from various parts of the program. Therefore, if the records are not in the database, the records are added to the dataset, and the dataset is updated back to the database. This works without any issues.However, one of the easiest actions to take will cause one of these records to change two fields, and a new record will be added. Those are all the changes that are caused by this action. Those changes are then updated to the database...or so I hoped, but when I try that I get an exception stating:[code]I have looked at the datatable that is being updated, and there are, as I expect, two records being changed. One of the records is the new one that is being added, while the second record is the record that was changed. I have noted that the change is, in fact, different from what is in the database, so this really IS an update.

However, I also noted that if I then stop the program and start it again, all is well. This indicated to me that it was actually the routine that created the records that was causing the trouble. Therefore, to test this out, I tried a totally horrible solution. I altered the method that writes to the new records to the database so that after it wrote each record, it would clear the whole dataset and fill it all again. That's obviously a terrible thing to do, but it works. If I write each record, throw out the dataset and re-create it, then I don't get any exceptions when I later try to modify it.This makes no sense to me. What am I doing in that first method that could be putting the Dataset into a state where it fails on any further modifications? I should add that the code that actually pushes the changes to the dataset down to the DB is the same for both methods. In fact, the database is updated in an UpdateDB method that is called from that first method (which creates the initial records if they are missing), as well as being called by the other methods that alter the dataset. I have also confirmed that ANY alterations I want, whether they add, remove, or just alter records, works fine. It is only that one method that creates the initial records that is causing me trouble. Moreover, it is not the actual update of the DB that is doing it, since that same method works fine ever after. Further testing has showed that the issue is row by row. As each initial row is added, it can't be modified by any other code until the dataset has been re-read from the DB. url...

View 2 Replies View Related

Concurrency Violation On .update Statement - Error?

Jun 5, 2011

A concurrency violation error? It happens on this statement:

CODE:

It thinks I'm using a key value of 1 when the actual value is really 1218. I'm using a command builder. The attachments show the value of the key value and the value of the update text values. By the way, I can insert data but not update it.

View 2 Replies View Related

Concurrency Violation: The DeleteCommand Affected 0 Of The Expected 1?

Feb 14, 2008

This code used to work but for some reason it doesn't anymore. I get the error "Concurrency violation: the DeleteCommand affected 0 of the expected 1 records." I checked to see if the values were in the db and they were, by the way I'm using Access 03. I commented out the try/catch block and got the error when trying to update the ds.

[Code]...

View 23 Replies View Related

Concurrency Violation: The Updatecommand Affected 0 Of The Expected 1

Feb 16, 2011

im using a sqldataadapter, dataset and bindingsource to connect to a table. i retrieve all records from the database and i change the data on a field then update changes to database. when i try to change back to original value i get a Concurrency violation error (concurrency violation: The updatecommand affected 0 of the expected 1). this is the

Try
Me.Validate()
Me.sqlBindingSource.EndEdit()
Dim slqCmdBuilder As New SqlCommandBuilder(sqlAdapter)

[Code].....

View 4 Replies View Related

Concurrency Violation The DeleteCommand Affected 0 Of The Expected 1 Records?

May 15, 2012

When I run the following code I get the error "Concurrency violation: the DeleteCommand affected 0 of the expected 1 records.", I know that this happens when the data is changed in between pulling it from the database and sending it back but, the database is not being edited.

View 6 Replies View Related

Concurrency Violation The UpdateCommand Affected 0 Of The Expected 1 Records?

Dec 3, 2009

None of the "answers" that I have been able to find, address the problem. I am using oledb to read and update a MS Access DB in an ASP.NET application.I read the member dataset and fill it using the data adapter.I modify the row of data in the dataset.I then use the data adapter to update the row and get the error shown in the subject.

I am an experienced developer using ado.net on sql server windows application via the data adapter, so am familiar with how this should work.

I have searched everywhere and am hoping that someone here at Microsoft might have the answer.

View 7 Replies View Related

Concurrency Violation: The UpdateCommand Affected 0 Of The Expected 1 Records?

Mar 9, 2007

I keep getting the above error when trying to update a record from a SQL Server DB TableWhat exactly does this Error Message mean?

View 3 Replies View Related

Include Logic In Application To Handle Concurrency Violation?

Nov 5, 2008

the problem here happends every time i tried to change a record that's been allready saved.Private Sub PropuestasBindingNavigatorSaveItem_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PropuestasBindingNavigatorSaveItem.Click   

[Code]...

View 8 Replies View Related

VS 2008 Corrupt Access Table Causing A Concurrency Violation?

Oct 1, 2011

I have a single user app that I wrote and have been using for more than a year that uses an Access 2003 database. Today, out of the blue, I started getting a DB concurrency violation whenever I tried to update one particular table in the database. After trying to troubleshoot what the problem might be, I just deleted that table and recreated it and the problem went away.

View 2 Replies View Related

VS 2010 : Concurrency Violation: The DeleteCommand Affected 0 Of The Expected 1 Records

Mar 31, 2011

i have this delete code

My search

Public Sub mnamesearchdata()
'search data
Dim blnfound As Boolean
blnfound = False

[code]....

My Database In case. Having weird issues also were my database will be wiped out. Having 0 record.

[URL]

View 1 Replies View Related

VS 2008 Master/detail:Concurrency Violation:pdatecommand Affected 0 Of The Expected 1 Records

May 8, 2009

My client recently got this error but I can't reproduce it on my pc. Any Idea what the problem could be. I have a master/detail scenario. So I have a grandparent/parent relationship, so when I select a product from my product combobox it displays the relevant results from the Result_Header table in my first datagridview.

Then I have a parent/child relationship so that when I select a result_header item from my first datagridview it displays the child records from the Result_detail table. If i'm adding a new Result_Header and then click save, I search for existing tests for the chosen product and insert them as new datarows into the Result_detail table. then I can update the child rows and click the second save button and it saves what I edit. Quite complicated.

Dim data As DataSet
Private dbpath As String = My.Settings.dbpath
Private con As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;" _
& "Data Source=" & dbpath & ";Persist Security Info=False;")

[code]....

View 1 Replies View Related

Error : "Concurrency Violation: The UpdateCommand Affected 0 Of The Expected 1 Records"

Jul 27, 2009

I am working on a program whereby insert, update and delete of database is required, i have been able to do so successfully but the above error occurs when i tried to insert a new row of data into the database and tried to edit it and update it to the database.  The database platform i used is SQL server 2005 and i am using datagridview to display my data, my primary key is "s/n" which is an auto number, however, whenever after i insert data into the database, the newly added row has the "s/n" column blank shown in the datagridview and after i edited that row and tried to update it, the error occurs.

Imports System.Data
Imports System.Data.SqlClient
Imports System.Threading
Imports System.Text.RegularExpressions

[code]....

View 1 Replies View Related

Concurrency Error Updating Tableadapter

Apr 30, 2009

I'm new to vb.net and its database methods so I'm a bit confused by these datasets and grids and table adapters.

I'm getting:Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.

On this line:frmMain.AccountsTableAdapter.Update(frmMain.DsAccounts)

I have a datagridview attached to a dataset. I also have a button that the user can press to update information in the datagrid based on a website. But I often get that error when it comes to actually updating the table.

View 1 Replies View Related

VB 2010 Concurrency - Updating Entry In One Instance

Mar 29, 2012

I am writing a program that makes use of SQL databases using MSSQL Express 2008. I've just written code that updates data in the DB, but I noticed when I update an entry in one instance of the program, and then try to update the same entry in a second instance of the program it goes through. What I want is concurrency so if the entry is different from the original, updating is not allowed.

Here is the code I use to update entries
VB that calls the class and checks for errors...
Try
If contactIsValid() Then
Dim getresults As New groupfilladd
If getresults.updatecontact(myParent.itemfound + 1, fnameTxBx.Text, lnameTxBx.Text, _
[Code] .....

View 1 Replies View Related

OleDb Dataadapter Update Not Updating?

Nov 6, 2009

I have an application to re-sequence some items based on a an alphabetical ordering of the items from another table. I couldn't create an update statement to update the database when I pulled the information by a join query, So I pulled down both tables into a dataset with an XML Schema description where the two are related by the itm_id key as in the database. I then have two datagrids one with the items and one with the bound to the relationship this allows only the records associated with the itm to be displayed in the datagrid, I then run a loop that changes to sequence number for each corresponding record,this all works fine but then I go to update the back end database.

The update from the dataadapter executes successfully, but then if I reload the dataset from the database back end I find that the update did not actually update the records on the back end. The only record that was updated was the very first record which updated with a 0 then all the others did not take, I have re-run it several times and they will not take.

Me.Cursor = cursors.WaitCursor
odbaCatItem.MissingSchemaAction = MissingSchemaAction.AddWithKey
odbaCatItem.SelectCommand = odbsCatItem

[code].....

View 5 Replies View Related

Concurrency - Restore A Dataset To The Previous State Before Updating The Database With A Data Adapter?

Dec 10, 2009

How do you restore a dataset to the previous state before updating the database with a data adapter? I have a concurrency update problem that I believe to be caused by this. The update fails during the update and a rollback command is issued using a SQLTransaction object. However, now the rowstates of the rows that did not have errors have been changed to unchanged. So this record is no longer availible to be inserted into the database. When I updated the value that could not be null and then test the second update which runs just as the first does then I get a concurrency error. The update code is below:

[Code]...

View 10 Replies View Related

Getting A Concurrency Error?

Apr 9, 2010

The way I'm doing this is performing multiple reads on different tables to extract data. In this case I'm reading 2 different MS Access 2003 tables. I then dump the data into a "Row" variable that I have Publicly defined for each Class (each Access table is defined as a Class containing all the fields, Add, Change, Delete, and Select functions).For example, my first read extracts all the fields from the "tblClients" table and loads them into the form fields via the "clientROW" object. My second read extracts all the records from the "tblClientAddr" table associated with the selected Client and loads them into their form fields respectfully via the "addressROW" object.

View 3 Replies View Related

ADO.NET Concurrency Single User

Jan 16, 2009

I've got a problem with my latest project, I get concurrency error but I'm the only one working on the database.It's an sql server 2005 express database, and i'm making a remote connection. I have a related database or how do I say it, it's with relations. But the strange thing is that I can update the first table but the 2nd one not. Well here is my code, don't really know how to explain it better but I get an error when updating my orderinformation table but when only changing values in orders that table updates perfectly. [code]

View 3 Replies View Related

Asp.net - Violation Of PRIMARY KEY Constraint 'PK?

May 20, 2010

i am trying to write a code in which i need to perform a update but on primary keys how do i achieve it
i have written the following code: kindly look at it let me know where m wrong

[Code]...

View 2 Replies View Related

Asp.net - Violation Of PRIMARY KEY Constraint 'PK_?

Apr 6, 2010

i am trying to write a code in which i need to perform a update but on primary keys how do i achieve iti have written the following code:

Protected Sub rgKMSLoc_UpdateCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles rgKMSLoc.UpdateCommand
Try
KAYAReqConn.Open()

[code]....

View 1 Replies View Related

Violation Of PrimaryKey Error?

Mar 24, 2012

I have a procedure that is building a PrimaryKey based on values input from a CSV File. There are 4 fields that make up this PK. My code is below.

[code]...

For some reason when it takes the "IF" branch, it gives me the "Violation of PrimaryKey" Error. When I debug the 4 key values, the record does exist in the DB Table. Not sure why it's taking this path. I think I'm not testing the "row" object correctly.

View 1 Replies View Related

.net - Call A Function In A C DLL From VB: Access Violation?

Mar 1, 2012

I'm trying to call a Dll function which looks like this (in the C/C++ Dll):declspec(dllexport) void execute(char** ReturnMsg, char* serverAddress, char* commandLine)

The VB 'wrapper' function looks like:

<DllImport("TPClient.dll", EntryPoint:="execute", CallingConvention:=CallingConvention.Cdecl, CharSet:=CharSet.Auto, ExactSpelling:=True)> _
Public Shared Sub tg_execute(<Out()> <MarshalAs(UnmanagedType.LPStr)> ByRef returnString As System.Text.StringBuilder, _

[Code]...

View 1 Replies View Related

.net - Optimistic Concurrency And Improving Solutions?

Mar 19, 2011

In our database we have gigantic tables (it was initially built 20 years ago). We are on the process of developing it.

Some tables contain rowversion and optimistic concurrency. We were wondering if there is a way to just correspond rowversion to the modification of some specific columns, but not all of them. In Normal Case, T-SQL which is generated then would be huge.

View 1 Replies View Related

.net - Why Isn't The Try/catch Catching The Access Violation

Apr 25, 2012

I put a try/catch block around a bit of code that occasionaly throws an expected exception, but rather than catching it and displaying the message box, it stops the debugger and alerts me that the exception is unhandled.How do I handle this exception so my code doesn't stop when the exception occurs?

Friend myDevInfo As New devInfo
''' <summary>
''' Closes the device handle obtained with CreateFile and frees resources.

[code]....

View 1 Replies View Related

ADO.NET Related Table Concurrency Error?

Jan 28, 2009

I get an error when updating a related table, the main table can be updated but the related gives me a concurrency error but I don't know why. Btw I'm the only one using the program and it's connecting to sql server 2005 express.Inserting works like a charm.My piece of code, I hope you get it. The concurrency error is given on Me._objtblOrderinformatieA.Update(Me.objdtsOrders.orderInformatie)

If MessageBox.Show("Bent u zeker dat u deze record wilt wijzigen?", "Orderbeheer", MessageBoxButtons.YesNo) = 6 Then
update_dataset()
Me._objtblOrdersA.Update(Me.objdtsOrders.orders)

[code]....

View 3 Replies View Related

Concurrency - Calculate Or Update The Registry With ID

Jan 21, 2011

We got an old system here in .NET 4.0 using an Oracle DB. At some point, some calculus are made and the system "locks" that register in the table using the following command: "SELECT [the registry that will be update by the calculus] FOR UPDATE NOWAIT". So if anyone tries to calculate or update the registry with that ID it won't work. After calculating, the system connects to the DB again and then "releases" the registry by simply executing a Rollback command.

Theoretically, this is correct for the system(although I don't like it). Anyway, here is the thing: if something is being calculated(and these calculous take like 5 minutes to finish) and in the middle of the calculous I close the browser, the registry will still be "locked", only being unlocked when IIS restarts(actually I dunno if it's released first, I forced IIS restart 'cause it was taking too long). [Code]

View 4 Replies View Related

Concurrency - Saving Data In DataGridView

Jun 18, 2012

I am doing a small project and I am using vb.net with MS access database. I am facing a Concurrency issue sometimes when I try to save data in the datagried view. I have added the datagried view by dragding and drop the table from the data source. Only one user is using the form to save data at one time. I think it works properly unless I moved from record to record then it gives me an error. "Concurrency, 0 records updated from expected 1....."

View 8 Replies View Related

Concurrency Control And Locks In Multithreading?

Apr 14, 2010

i understand that web service creates its own sessions so thats no problem to multi-thread. but i am writing my results into the database and files. how to do i do my concurrency control for writing into file and database here, can i do it on my calling app which is a console app or i will have to do it in my web service. i am not returning anything to the calling app. 

View 7 Replies View Related

Constraint Violation When Using Select Distinct?

Aug 6, 2009

I have a problem running a simple query: "select distinct payee from table". This query is set up in the dataset and is called GetAllPayee.My code goes something like:

Dim dtSources as new Datatable
dtSources =
Me.TblExpenseRecordsTableAdapter.GetAllPayee
Upon running I get the error:Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.The problem is, I haven't set ANY constraints on either the new datatable, or the dataset table (tblExpenseRecords). i.e. there is no primary key etc.

Can someone please help me out with this problem?I have no problems running the query through the wizard where I can view the results successfully.

View 3 Replies View Related

FTP The Server Committed A Protocol Violation?

Dec 19, 2010

Currently have a program on the market and just did a major update which 100s of people downloaded, the problem is that that update had a major bug which made it crash. So quickly got to work to fix the bug but everytime I connect my software to the FTP database I get this Error Message:

"The underlying connection was closed: The server committed a protocol violation."

I triple checked my code. Everything is right One minute it was working the next minute it wasn't,My buyers are getting very frustrated and I've had to cancel all orders due to this., The bug in the update software which I have now fixed but this other bug to do with protocol violation.I havent tested if its just now my computer that the error messages comes up or it happens on others.I've tried 3 seperate FTP servers and all the same results?

View 2 Replies View Related

The Server Committed A Protocol Violation?

Sep 22, 2009

For some reason i am getting this error when I try to upload to my ftp:The underlying connection was closed: The server committed a protocol violation.This happens at the GetRequestStream() portion of the code. here is my

Private Sub FTPUpload(ByVal p_FilePath As String, ByVal p_FTPServer As String, ByVal p_FileNameOnServer As String, _

[code].....

View 6 Replies View Related

VS 2005 Concurrency Error On The Second Update

Feb 8, 2011

I cannot for the life of me work out why I get a concurrency error on the second update Here is my

[Code]....

View 3 Replies View Related

VS 2005 Getting A Concurrency Error On A Truegrid?

Feb 22, 2011

I am getting a concurrency error on a truegrid. Basically I put some data in a row and and then do a dataadapter update command on the bound dataset. This works fine until I then modify the same row and do an update. How can I make it so that I don't get an error?

View 6 Replies View Related

VS 2005 Update Existing Row Concurrency?

Nov 2, 2011

Okay have developed a form in vb.net cf using sqlce. I know this is the vb.net section but I feel it's a data issue. I have a table called STORES which has a primary key of two columns (ST_STORECODE & ST_CY_CODE).I populate a dataset with all the store data and to the following to find the required row:-

[Code]...

When I step over the update command I get a concurrency error. Can someone PLEASE help me with this. I have spend days trying to fix it. All I want to do is find a row, do some changes and save it back to the database.

View 14 Replies View Related

[VS 2008] QueryPerformanceFrequency Access Violation?

Apr 8, 2009

Im having a access violation error on my QueryPerformanceCounter Statement and im not sure why. I've search the internet for answers but found none.Declaration:

Private Declare Function QueryPerformanceFrequency Lib "kernel32" Alias "QueryPerformanceFrequency" (ByVal lpFrequency As Int64) As Boolean
Private Declare Function QueryPerformanceCounter Lib "kernel32" Alias

[code].....

View 2 Replies View Related

Updating Child Collection Of POCO (adding/updating/deleting) In Entity Framework 4.1?

Jan 25, 2012

I have a webpage with a form that is used to edit some object. This object contains a Collection of other objects defined like this: Public Overridable Property Employees As List(Of Employee)

On a form I can delete an employee, add a new one or modify existing one. When I click save new values are sent to the server. On a server I check if the user exists. If exists then I modify its values, if it does not exist then I add it. All employees that exist on the server and were not sent are marked as deleted (State changed to EntityState.Deleted). I try to use the following code (dbCollection = database entities, newCollection = collection sent from the form):

[Code]...

This code does not work, because changing to EntityState.Deleted removes the object from collection, and for each loop breaks, since the collection is modified...I know that I can overcome this problem by using a for loop or adding objects to delete to some other list first, but I hope maybe there is a pattern that would make my code nicer.

View 1 Replies View Related

Access Violation Using Open File Dialog?

Apr 23, 2010

I am using VS2010 release edition with Windows XP, Vista, 7

my programme works fine in XP but fails in Vista and 7.

All I am trying to do is open a OpenFileDialog to get a filename. [code]...

View 1 Replies View Related

ASP.NET -> WCF Concurrency - System Hangs And Goes Into A Idle State?

Apr 20, 2009

I'm developing an Ajax-based application which makes heavy use of server calls to a WCF layer that communicates with a DB.Whenever I effect from the client (an ASP.NET page) many calls within a short span of time to the underlying WCF services, the system hangs and goes into a idle state.

View 2 Replies View Related

ASP.NET MVC - Store A String Per User, So It Seems Like A Violation To The MVC Separation?

Dec 14, 2011

I have a question about static strings and so forth, in an ASP.NET MVC.I need to hold a string(a value), when the user goes through the application.Problem is, I feel like that would be a violation to the MVC. I just need to store a string per user, so it seems like a violation to the MVC separation.

View 3 Replies View Related

ADVERTISEMENT