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].....
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Apr 3, 2011
I am once more having throuble linking my visual basic code to the acompanying database. this current error is when I'm trying to add a new record to the database, using an OleDb dataAdapter: Whenever I run it, I get the error "Syntax error in INSERT INTO statement."
[Code]...
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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].....
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Aug 20, 2010
I've been using Visual FoxPro for the past 10 years, and am trying to learn VB.NET, (using VS 2008). I am in the process of re-writing a small VFP app in VB.NET, and am using the VFP DBF tables, (via OleDb). It is a real struggle for me to comprehend all the levels to keep track of and was wondering in anyone knows of some sample code that would point me in the right direction. After I complete this small app re-write, I have others to do that all require the VFP DBF table updates.
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Feb 15, 2011
I have been researching all that is related to DataSources, DataReaders, DataAdapters, etc, with an Access 2010 DB bound to a DataGridView.
Everything is fine, just one line fails and is driving me nuts Here is the code:
[Code]...
The line that fails, actually updates my database, but somehow, the update is not performed on the line that belongs to the first row of the grid. What is more, if I change the value manually, the same update method works fine. What is going on here?
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Dec 29, 2009
I dont know where's my error.To begin with i have two buttons ADD and SAVE.My Datebase Name is COURSE where all its fields are text except courseid (number).when i click SAVE the only error is FAILED to convert parameter value from a string to Int32 exactly during dataadapter.update (ds,course)I am not converting any datatype or value to int32 .
Private Sub BUTTONSAVE_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BUTTONSAVE.Click
MsgBox(" SAVING CHANGES....")
Me.Cursor = Cursors.WaitCursor
[code]....
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Dec 6, 2011
I need to select some user datagridview settings (such as column width, column visible, etc.) from my database. Then I run a loop to change those settings. If any settings are changed I need to update the database. For some reason I can't get the code below to update anything. The code throws no errors when it executes, but when I check the database for the updates nothing is changed.
Public Sub pubsub_UpdateUserSettings(ByVal FormName As String, ByVal dgv As DataGridView, ByVal MethodID As Integer)
Dim adt As New SqlDataAdapter
Dim cmd As SqlCommand
Dim cmd2 As SqlCommand
Dim dt As New DataTable
[Code] .....
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Jan 24, 2009
I am trying to make a little search system, so the user can enter a search parameter which then populate a DataAdapter, DataSet then DataGridView with the selected data then any change the user makes in the DGV are then commited to the MS Access (97) Database when a Update Button is pressed. This is what i have so far, at the minute it seems to populate the DA, DS and DGV but when i come to press the Update Button I get a pop up box with a long error message:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " & frmMain.varDP_System
[code].....
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Oct 11, 2010
I am using SQL Compact Edition and have a textbox binding to a dataset. When I enter something in the text box and try to update the datasource I get that the column Code in the datasource cannot be null. The textbox has a value so why is Code null?
Dim CONN_STRING As String = "Data Source=" & My.Settings.AutoCallPath & ";Persist Security Info=false;"
conn.ConnectionString = CONN_STRING
Dim myCommand As New SqlCeCommand("SELECT * FROM AutoCallDataTable", conn)
da.SelectCommand = myCommand
[code]....
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Apr 11, 2011
I have a DataGridView that displays data from a SQL Server database. It allows the user to edit the data and save it back to the database. The way that data gets saved back to the database is something like this:
Dim da As New SqlDataAdapter
Dim cmdBuilder As New SqlCommandBuilder(da)
da.SelectCommand = New SqlCommand(sql, conn)
da.InsertCommand = cmdBuilder.GetInsertCommand
da.UpdateCommand = cmdBuilder.GetUpdateCommand
Dim cb As SqlCommandBuilder = New SqlCommandBuilder(da)
da.Update(dt)
This works fine when I'm saving to ordinary tables. However I also want to save to a view that has an instead of trigger that fires on insert, update and delete. When I try to use the above with this view I get the error:
"Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."
How can I save to this view? I don't want to save directly to the underlying table because I want the trigger to fire.
I also tried manually generating the InsertCommand and UpdateCommand, but got the same error. It turned out I got the commands wrong when I manually generated them. Once I fixed that it worked fine - my view gets updated and the trigger fires as expected. I guess that you just can't autogenerate the commands for a view with SqlCommandBuilder.
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Jul 18, 2012
I've taken over a winforms project (attached to a SQL Server database) that needs to completed quickly so am trying to work with what the other developer has rather than rewriting it all. He has an admin form with a listview and a datagridview. The idea is to allow a user to edit the lookup tables for the database (customer type, product list, etc). When the form is loaded, the listview is populated (hard-coded) with a list of available tables. Clicking on a table name fills the datagridview with the contents of the table. What he left incomplete was the updating of the database if the user makes updates/inserts to a table.Now, I know that normally you would just call the Update method of the dataadapter, but he passes all his database calls for the entire project through a helper class that will execute parameterized sql queries (for updates/inserts), or return a bindingsource object for displaying data. But this helper class does not expose the underlaying dataadapter.
To populate the datagridview, he uses the following code in the ListBox1_SelectedIndexChanged event:
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As
[code].....
The rest of the app deals with only one record at a time, so when an update is needed, he scrapes the data from the form, builds a parameter array and passes the array and the name of the stored proceedure that handles the update to a method of his helper class called .InsUpDel - which is simply another wrapper that builds a parameterized query, executes the passed stored proceedure and returns the success/fail state of update.But, since this part of the app deals with an entire table rather than just one record, that method doesn't work. So, back to my question: How can I update the database when a change is made to datagridview when all I have is the bindingsource?
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May 12, 2009
Im having a very strange problem.. I just copied the source code from one working application to this new application. It was working fine over there but not over here in new application. Neither it was showing any error nor updating the data. Below is the source code (method) that im using ..
public static void AppendViolations(string dsPath, DataTable dtSource, string PartitionID)
{
string ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=" + dsPath;
string SqlStatement = "select * from IncaViolations";
[code]....
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Aug 18, 2010
I have two similar databases and i want to update a table of one database from the other, so insert new records, delete records that are not in the source and update different values.I use the dataadapter update method but it not recognize the primary key, so it only work when the destination table is empty. Otherwise i have an exception of duplicate primary key.The databases are sqlite but i tried with access too with the same error (different message due to different provider but the two times saying that cant insert because the primary key is duplicate).
My code is:
vb
Private Function updatetable()
connectdbsource()
connectdbdestination()
[code]....
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Jan 10, 2010
I'm having trouble getting a datagridview to update into an access db.Here's the code, from what testing I have done it is telling me that there are no rows in the datagridview (datagridview1.rowcount returns 0) when I can visibly see that there are many rows:
[Code]...
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Jun 21, 2010
Any tutorial and maybe a sample project that can be downloaded that shows how to update a database such as MS Access from DataAdapter commands in which changes are made in a DataGridView? For example, the DataAdapter contains 2 tables called FirstTable and the other table would be called SecondTable. The DataGridView is based on a query that shows rows from both tables. The actual table that contains the rows to be changed, inserted or deleted is FirstTable.
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Jan 25, 2007
I'm having trouble updating a sql server database with a dataset using a dataadapter. I have used the dataadapter with success in the past when adding new rows, using a single table, and just calling the dataadapter.update command.However, I am now running into a more complex scenario and I need to use dataadapter.UpdateCommand method and I'm having lots of problems.
The sql statement that I'm using to fill the dataset looks like this: "Select [Order Details].ProductID, [Order Details].UnitPrice, [Order Details].Quantity, [Order Details].Discount, Products.ProductName From [Order Details] INNER JOIN Products ON [Order Details].ProductID = Products.ProductID Where OrderID='" & strOrderID & "'", sqlConn"
This is pulling the data from 2 different tables (Order Details and Products) and then joining them and filling the dataset, and I am seeing the exact results I want. I am then binding the dataset to a datagrid control that allows the user the option to edit the datagrid, which in turn updates the dataset.
So that being said how do I get the updated dataset back into the database? I tried using dataadapter.update but it informed me that I now need to use dataadapter.UpdateCommand. Ok, so I've looked up how to use UpdateCommand but I cannot for the life of me figure out how to set up the right sql command statement. Part of what has me confused is the UpdateCommand examples I have seen are working with a specific row and updating that rows data. I can get that to work but I want all changes to the dataset to persist and update to the database when the user is done working on the datagrid.
Also, the examples shown set up command parameters but again, this is only confusing me because I just want to send the whole dataset back to the database. It seems like the parameters are saying "Ok, this specific row in this specific dataset.table, update these specific fields in this specific database". I'm not sure how to accomplish that when working with a datagrid.
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Mar 22, 2012
I was working with a class used to update database.All things were working for 3 years perfactly.Now it started throwing exception for two records only.When i edit these two records and try to save back to db it throws exception.Else it works fine.
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Dec 12, 2008
i am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
[Code]...
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Mar 3, 2011
Is there any difference in the
1) If I insert a row into a sql table using insert query and
2) If I fill a datatable in dataset and add a row to it and again use the dataadapter.Update method for inserting this row.
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Mar 15, 2012
I have antyped dataset and simlpy want to update a record by using dataadapter but the aupdate method affect only ONE Item
Here is the code :
Dim cb3 As New OleDb.OleDbCommandBuilder(da3)
DSBANQUE.Tables("BANQUES").Rows(INC2).Item(0) = BANQREB.Text
[CODE]...
It updates only item no(0) and give me the massage of the RECORD UPDATED but it dosnt it returns the same value for the other items (1,2,3,4,5)
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May 11, 2009
This is my:
CODE:
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Jul 4, 2009
Editting and Updating Access with OleDb commands. VB9
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Nov 4, 2009
I posted in the Database development forum, but no bites. I have field names in my Access table which have a number as the first character (i.e. "2x2"). Evidently, the DataAdapter doesn't like this. I'm able to view the data in a DataGridView, but I get an exception when I use DataAdapter.Update.
Can I modify my sql statement to make the command builder work or do I have rename the fields?
For example:
"SELECT [2x2] as twoBytwo..."
Changing the names of the fields would be a huge pain-in-the-arse!
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May 23, 2012
I'm writing a time entry program to record when an employee checks in and when they check out.I'm struggling on the part where I need to calculate a time span (time out / time in). I am selecting the In Time, Out Time, and Total columns.I want it to take the Out Time subtract it from the In Time and place that value in the Total column.I have so far and have tried several variations of different updates but have had no luck.[code]I keep getting a syntax error in the UPDATE statment.I'm not very fluent with OleDB yet and I'm not sure if I'm doing the update correctly.I have no problem with OleDB and single UPDATES or single field updates but when I am updating multiple rows with different values.
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Sep 28, 2009
I have an issue with a data base updating it won't update for me in debgging mode it is stopping here on this bit of code which is highlighted in red. the error which comes up is .(update requires a valid update command when passed datarow collection with modified rows.)
Public Sub UpdateDataSource(ByVal ChangedRows As database.dataset1)
Try
'The data source only needs to be updated if there are changes pending.
If (Not (ChangedRows) Is Nothing) Then
[CODE]...
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Apr 2, 2010
i wrote a module of a connection to DB with OleDB and the 'sub UpdateClients' doesn't work, the DB don't update.what's missing or wrong?this line -> "daClient.Update(dsClient, "CLUB_CLIENT")" -> dosen't work (sorry about my english, i'm not so good)the database doesn't update after this line (like i expected) what's missing in my code? i want that my DB will Update. "txtid" will be in "ClntId" from my tables.
Module mdlDB
Const CONNECTION_STRING As String = _
"provider= Microsoft.Jet.OleDB.4.0;Data Source=DbHalf.mdb;mode= Share Deny None"
[code]...
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May 7, 2009
Attempting to execute an update command against an Excel 2007 file gives the error:
Operation must use an updateable query. I'm using System.Data.OleDb with a connection string like this:
Dim strConn As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=""" & pathToFile & """;" & _
"Extended Properties=""Excel 12.0;HDR=YES"""
I have tried setting ReadOnly=false but that gives Could not find installable ISAM. I have also tried setting Mode=ReadWrite and IMEX=1 which didn't seem to have any effect. My update command is like this:
Dim cmd As OleDbCommand = con.CreateCommand()
cmd.CommandText = "UPDATE [" + sheetName + "] SET [Quantity Error] = 'test' WHERE [Full Name] = 'Mr. Brown White'"
where sheetName was obtained from querying the excel schema. Is it possible to do what I am trying to?
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Aug 13, 2009
I have some excel file, where I have to programatically delete all hidden columns.The problem if that, when I receive these files, the cells are mainly formulas, and as I delete some columns I get some "#REF#" problems.
I thought a bit about the problem an decided to create a function that loops throught all cells and replace the value by its own value, before deleting the columns, via OLEDB:
dt.Rows(row)(col) = dt.Rows(row)(col).ToString I don't know if this works. So I followed an update example I found in google, but it doesn't work:
Dim conexao_Excel As String = "Provider=Microsoft.Jet.OleDb.4.0;data source=" & fileName & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1;"""
cn = New OleDbConnection(conexao_Excel)
cn.Open()
da = New OleDbDataAdapter("SELECT * FROM [" & sheetname & "]", cn)
da.Fill(dt)
[Code]...
"Update requires a valid UpdateCommand when passed DataRow collection with modified rows." I image this is pretty basic, but I have already lost so much time on this issues...
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Dec 2, 2007
For some reason every time I execute the code, it gives me the error "No value given for one or more required parameters" and it points to the ExecuteNonQuery. Below is the relevant code I have.
Public Function sqlUpdate(ByVal varBalance As Double, ByVal varWithdrawlAmount As Double) As Double Dim dbCon As New OleDb.OleDbConnection dbCon.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = dbATM.mdb" Dim query As String Dim cmdUpdate As New OleDb.OleDbCommand dbCon.Open() varBalance = varBalance -
[code]....
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Jun 8, 2012
I have login system where once logged in, there is a global variable which holds the users ID. In another form, I have an SQL update which updates rows in the user table. So my dilemma is this: When I try to update it either updates the first user only, or all users.
The SQL I have :
Dim Update As String = _
"Update User Set field1=?, field2=? field3=?"
What I would like is...
Dim Update As String = _
"Update User Set field1=?, field2=? field3=? where ID =?"
However this doesn't work.
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