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]....
is d query rite ?q = "update FIRSTBBA WHERE FBBANAME<>"" ORDER BY FBBANAME"Need to update a table in ascending order
View 2 RepliesI have the following code:
' Now retabulate the current occupancy.
For Each row In assignments
Try
[code]....
I am using the following code in my vb.net while using that code it will show me syntax error. Private Sub updateinfo()Dim con As OleDbConnection
[Code]...
I have a datagrid which is getting populated by two tables. I want to know how do i perform an update on these tables once the user tries to save any edited data. I am doing the following which i found in one of the articles online: [Code]
If objDataset.HasChanges()
Then Dim data_adapter As OleDbDataAdapter Dim command_builder As OleDbCommandBuilder fillSql = "Select [Price Info].[Product Quick Find ID] As
[Code].....
I am writing a program that has a listbox which is bound to a dataset. When I click a button (e.g. delete) the item is deleted from the database ok using an SQL query but is still shown in the listbox. How do I get the listbox to refresh/update its display?
View 8 Repliesi have 3 tables t1,t2,t3..if i update t1,t2 and t3 must also be updated.i have just been tried
UPDATE t1,t2,t3 SET t1.f1='sample',t2.f1='sample',t3.f1='sample' WHERE t1.f1='test' and t2.f1='test' and t1.f1='test'
using this,update fails if t2 and t3 could not find 'test' in their fields,if i use OR all records will be..i have also tried JOINS
Update tbl_maincat AS m LEFT JOIN tbl_maincat AS m2 ON m.cTitle = m2.cTitle,
tbl_main AS c LEFT JOIN tbl_main AS c2 ON c.MainCat = c2.Maincat,
tbl_subcat AS s LEFT JOIN tbl_subcat AS s2 ON s.csCat = s2.csCat
[code]....
I'm trying to update an access .mdb file. The file contains one table with 115 fields. I have estabished a connection to the database. I'm able to select the datarow I want to update. I can see it when I debug the code. I change two fields in the datarow by using thier index.
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I have a working game server browser project in VB.NET 2008 and I'm trying to fix the CS 1.6 and CS-Source query protocols. Where can I go to learn how to query a game server? The code worked in 2004 and now I want to update it [Code]
View 2 RepliesI am new to VB.net and want to know how I can execute SQL queries from within VB.net code. Example: I want to update some records in a table using SQL query on the Form Load event.
View 2 RepliesI have been coding an application for a LeaderBoard for a game. I have all the Login sorted using Mysql and even have all the Account infomation displaying in lables etc. for account info form. Now I am trying to UPDATE information and this is how I was trying to do this...
Dim UpdateInfo As New MySqlDataAdapter
Dim mycommand As New MySqlCommand()
Dim mydata As MySqlDataReader
Dim query = "UPDATE Login SET Pword = '" + UpdateTxtBox.Text + "' WHERE Uname = " + Login.Uname
mycommand.Connection = conn
mycommand.CommandText = query
UpdateInfo.SelectCommand = mycommand
mydata = mycommand.ExecuteReader()
But comes back with an Error saying... Unknown column 'username here' in 'where clause'. Now the username is in the database as I have just logged in with it and I am taking it I have the Query wrong somewhere.
what i'm working on is, i have VB with a loaded Access DB, and i'm using a query to display the information, in a list box and in indivual labels. i have it so it will allow new entries to be made, however i can't figure out the exact code to get it to update to the program the only code i currently am able to show is this since everything is basically being done through access
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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]....
View 4 RepliesI 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.
I have a datagridview which i filled with this code:
Dim daProd As New SqlDataAdapter
m dsProd As New DataSet
cmd = New SqlCommand
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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
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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].....
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...
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]......
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.
View 2 RepliesI 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.
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?
View 3 RepliesIn 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]......
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]....
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.
Public Class Form5
Dim connection As OleDb.OleDbConnection
Dim mystr As String
[code].....
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.
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]....
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].....
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?
View 3 Replies