VB 2010 Sql Compact 3.5 DataGridView Not Updating?
Nov 3, 2011
I have a single table in a SQL Compact DB (*.sdf) and a Datagridview. When I put the datagridview on the form I connected it to the table in the compact DB. I also have a few button that, Deleted and Add a entry. Delete button obtains the selected datagridview row and resolve the record ID. It then deletes the record in the database. The record gets deleted but the datagridview does not show the update unless I restart the debug session. I make teh same cal to:
Me.TblTableAdapter.Fill(Me.Database1DataSet1.tbl) which is called when the form load that fills the datgridview..
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Feb 15, 2012
I have a datagridview and 3 buttons (New, update and delete).When I enter the form and I make changes to the datagridview and I save them, everything works fine.After the first save I make some more changes and I hit save again I get the error:"system.data.dbconcurrencyexception concurrency violation the updatecommand affected 0 of the expected 1 records"
The code I use below:
Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Me.dgvOrderRegel.AllowUserToAddRows = True
[code]....
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Apr 6, 2011
I have an existing database that Im using. I managed to update the database to whatever changes I do to the items in the datagridview using the code
Me.TblEmployTableAdapter.Update(Me.PoolsDataSet.tblPools)
Me.TableAdapterManager.UpdateAll(Me.PoolsDataSet)
Me.StockDataSet.AcceptChanges()
Me.TblEmployBindingSource.EndEdit()
But the thing is, whenever i write something in my code e.g "retyping the Me.close". It goes back to whats in the original items in my database.
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Feb 22, 2012
I'm loading a table from my database into a datagridview. Removing (multiple) rows from the database and the datagridview works great. Now I need to be able to add records directly into the database as soon as I add a new value into the datagrid.
- the id is the same ID as in the database
- the id-column is read-only
- the "datum"-column is where I want to add a new date (as soon as I leave the column it should add it into the database and the id should be added, without reloading the database) Adding the id (without reloading the database) is actually the most important part, but I don't have a clue how to achieve this.
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Jul 4, 2011
I am programmatically updating some columns in a datagridview. When the user has also updated some columns then my program generated changes are also saved to the database (MSAccess). If the user does not update a dgv column, my program edits are not saved. I have read in another posting somewhere that I should be updating the bindingsource rather than the dgv cells. I have some code that was attempting to do this but it doesn�t work.
Dim dvr As Data.DataRowView
With TblClassMembersDataGridView
.EndEdit()
.CommitEdit(DataGridViewDataErrorContexts.Commit)
[code]....
PS. Is the bindingsource in a on-to-one relationship with the table returned by the Fill method? If not, I can see one obvious error.
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Feb 15, 2011
Anyone doing anything with VS2010 and the compact framework ? or do we need to go back to VS2005/VS2008 ?
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Jul 22, 2010
I created a SQL Compact Edition .sdf file in VB 2010 Express. I set the first column in the table as a Primary Key. But can I make use of it or am I limited to scrolling all the way through the file until I find the match I want? I managed to use a primary key with a SQL server .mdf file using the FindBy statement, though as a beginner, didn't really understand what I was doing so resorted to the more simple sdf file format to get me started. Goodness me there's so much to learn about data handling, it took me days to find out I didn't need a .Net provider in the connection string for Compact Edition.
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Oct 26, 2011
Greetings, I'm a little bit confused about SQL Server Compact behavior.I have a small app that uses a small sdf file located on a network share.The problem is that while the app itself is working perfectly well using the connection string that points the location of the sdf file on a network drive, when I try to open the same sdf using the Server Explorer I get this error:
SQL Server Compact does not support opening database files on a network share.Obviously, if the app IS working it does indeed support network shares, then why Server Explorer cannot open it?
I copied the database file to a local drive but it's not very convenient. What might be the problem?
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Jan 17, 2011
I am trying to run this sample code [URL] I added reference to System.Data.SqlServerCe in project. I get the following error?
SqlCeException was unhandled
There was an error parsing the query. [ Token line number = 1,Token line offset = 8,Token in error = FROMUsers ]
myDA.Fill(myDataSet, "MyTable")
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Aug 30, 2011
I would like to know if there a way to Compact and Repair an Access 2007 Database Programmatically Using VB 2010?
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Jan 31, 2011
I have a data grid view bound to a sql server table. What I am trying to do is have changes made in the dgv update in the sql table. I tried to use the Update method of the table adapter but get the following error.[code]....
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Jul 26, 2011
I have a datagridview with a datatable as datasource. If I add a row to the datatable, then the datagridview is not showing the contents.
grdChannel1.DataSource = CreateTable(colChannel)
Private Function CreateTable(ByVal colChannel As MyCollection(Of Channel)) As DataTable
'Create table and add collection into
[code]....
I have 2 row counts if I check the the row counts of the datagridview in the debugging mode.
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Jul 18, 2009
I have a datagridview which i filled with this code:
Dim daProd As New SqlDataAdapter
m dsProd As New DataSet
cmd = New SqlCommand
[code].....
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Apr 24, 2012
I am trying to add and update data in a db from a DataGridView. I have a save button that runs this code. The code works fine. It figures out which rows are new and add it into the DB and which rows are updated and updates them in the DB. BUT if you press the button again it will add the new row in again. it does not mark the new row as one that needs updating when the button is pressed again
Dim recall As New stLib.clsRecall
Dim rulesRow As DataGridViewRow
For Each rulesRow In DgRules.Rows
[Code].....
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Mar 6, 2010
teaching myself (an oldfashioned VBA programmer) VB2010 by converting an existing Access 2003 application to VB2010. I can read my data from an Access database into a datagridview:
'Biog datagridview
cnGrid.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:UsersPeterDocumentsDatabasesTestDatabase.mdb;User Id=admin;Password=;"
[Code].....
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Jun 5, 2011
my code to update my data from a datagridview wich is bound to a datatable.
all works fine until the update proccess is started. The programs updates all my rows (x amount) on the datagridview but when it is saved the first rows data is reverted to what it was before update proccess was started..
EX.
My rows
ID Reg Brand
0 123 456
[Code]....
The first row did not save the new data passed to the datagrid but all the other rows did save the data correctly...
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Apr 19, 2010
I'm getting the following error trying to update a SQL 2000 table from a DataGridView:
"Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information"
The pkClaim in the select is the key column. I don't know what I'm doing wrong here.[code]......
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Jun 12, 2011
I am trying to update a database table that's attached to a table adapter and can't quite seem to be able to get the code to work. It was suggested that I use an update statement, but the person I was working with had no idea how to update a table adapter. how to update a table adapter.
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May 11, 2009
I have a datagridview that I am binding to a collection. What I need to do is process each object in the collection (send quotes to our customers), and then display the items status in the grid. Then once the collection is completely processed clear the grid of items for the next round. I am binding to the collection with .DataSource = collection.
My Question:What would be the best way to update the grid as the collection is processed one object at a time.Initially I had thought about storing each item in a database table and then bind the grid to the table. Then as I processed each record, update the record and rebind the grid. The problem I had with that method was that I would be constantly writing and deleting data from the same table. That seemed unnecessary vs just using a collection and updating the collection.
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Feb 19, 2010
I am trying to update a query in a datagridview using user input from a textbox and a button to apply the query to the grid........
Public Class Form4
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]....
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Feb 3, 2009
I have a DGV with a single row that I want to update with new data in a timer. What is the best way to do this? Would I just update each cell in the row individually when the timer fires?
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Mar 10, 2010
In a table I�ve a bit field which is shown as a checkbox in datagridview (col 20). Once the dategridview is painted in my form, I�d like to save the checks made in the checkboxes. The following code is not updating my table but it�s not generating errors either.
For i = 0 To Me.DataGridView1.RowCount - 1
Dim data = Me.DataGridView1.Rows(i).Cells(20).Value
Dim sql As String
[Code]......
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Feb 12, 2009
I have a datagridview and the datasource is a database query. This query takes data from multiple tables within the database.
When I run the project the data loads to the datagridview fine. However, the system needs to allow the user to update data shown in the datagrid and save it.
I've been messing with this for ages now and it is still not saving correctly. Here is the code behind the save button:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim strUpdate As String = "Update tblAttendance set Reasonforabsence = @Reason For Absence"
[Code]....
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Jul 18, 2012
I have a DataGridView that is attached to a BindingSource that gets data from a SQL Server database. I can populate the DataGridView without a problem. I can even insert/update it without issue if I run the update code from a click event of a button. But where I run into issues is when I try to update the database as soon as the user is done editing a row.
I thought that the DataGridView_RowLeave event would be perfect for that, but it actually does not commit the changes until it has been fired twice (that is, after an edit, I have to click on a different row or arrow down twice before the edit shows up in the database). Then I thought why not call the update code on both the _RowLeave and the _RowEnter? That worked fine for updates, but then I found that three records were inserted into the database when I added a new row to the DataGridView (the data gets inserted, then a null value, then the data again).
After digging around on the web for most of the day, I found that the _RowLeave event actually gets called pretty early on when you move to another row, so I figured maybe the changes made in the DataGridView aren't getting transmitted to the underlaying DataTable before the DataAdapter.Update method is being called. That would explain why the data would not update with the first call to _RowLeave, but would when using a click on a save button (since all the DataGridView events would complete before the button click event fires). So, I begain experimenting by placing my update code into various events. I tried _CellEndEdit, _CellValueChanged, _CurrentCellDirtyStateChanged (with a call to DataGridView.CommitEdit), and _RowValidating. I even tried calling BindingContext(DataGridView.DataSource).EndCurrentEdit() in conjunction with my update sub, but none of those would update the database when the focus left the edited row. :(
I'm at my wits end here. Surley it's possible to commit the changes made on the DataGridView to the database when the focus is moved off the edited/new row. It's obvious to me that I need to flush the changes shown on the DataGridView down to the DataTable, but I can't seem to find the right method/event to do just that.
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Jun 12, 2011
Public Class Form5
Dim connection As OleDb.OleDbConnection
Dim mystr As String
[code].....
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Jan 19, 2009
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Seth Hall\My Documents\Visual Studio 2005\Projects\Lunchout Server\Lunchout Server\agentinfo.mdb"
con.Open()
[code]....
I have a DataGridView that I added to my form and I used its wizard or whatever its called to connect my access database to it. Now it displays my DB and everything I have my dataset as Agentinfodataset, my table adapter as agentstableadapter and then agentbindingsource etc.
Now this is my code to delete a selectedrow in the datagridview
Private Sub btndelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btndelete.Click
For Each row As DataGridViewRow In DataGridView1.SelectedRows
DataGridView1.Rows.Remove(row)
Next
End Sub
But it wont save to the database. Im messed aroudn with Fill, Update, AcceptChanged, EndEdit and I just cant see to get to work. I looked around on google and still nothing.
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Mar 13, 2009
i have a datagridview and a textbox. i want to update the cells programetically but there is error "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information." here is my code:fill datagrid button code:
ada = New SqlDataAdapter
ds = New DataSet
con.ConnectionString = strCon
[Code]....
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Apr 30, 2011
I am currently having problems with adding new rows to my database via the datagridview. I am able to edit previously existing data fine, however adding a new row in the datagridview then pressing this button gives the error 'Syntax error in Insert INTO statement'
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
Dim i As Integer
[code].....
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Mar 9, 2009
I'm populating a DGV from a DataSet... all done by code. I have the properties set to allow editing, etc. However, when I make changes to a record, they're not updating back to the Database. I suppose my assumption that by setting the properties to allow editing would automatically write the changes back to the database were wrong. Do I have to write update, delete, etc. commands?
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Feb 19, 2011
I'm using VB.NET 2008 with a DataGridView and I'm interfacing to a Visual Foxpro 6 database using the vfpoledb.1 driver. When I change a value in the description field, it changes in the DataGridView but the database never gets updated. Do I need to use code to force the changes to take place?Here's the code I'm using:
Imports System.Data.OleDb
Public Class Form1
Dim sConString As String = "Provider=vfpoledb.1;Data Source=C:MyDatabase.dbc;Mode=3;"
Dim con As OleDbConnection = New OleDbConnection(sConString)[code].....
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