I'm currently looking to add a code where, when executed, finds the appropriate value (searches for it), then on the same line, but in a different category, changes the text to 'YES'.
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This may seem like a simple problem, but I am completely baffled. I am working on a timekeeping application using Visual Basic 2008 Express and Access 2000.
There are three tables being updated by three separate sub routines. Two work fine, one does not.
In trying to resolve the issue I test one field at a time. The test Access query and the code only reference the one field to change and two ID fields. The program runs but the field is not updated. The table has 42 fields to be updated when I get it working.
The Access query is:
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UPDATE tPPSummary SET W1MonHours = [@W1MonHours]
WHERE EmployeeID=[@EmployeeID] AND PPID=[@PPID];
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When I pause the running program at the intRowsAffected it shows 1 record which is correct.
I am really out of options as tho where to go from here. There are no simple spelling errors in the parameters, there are no error messages and the sub runs to the end.
I am attempting to run an update query on a Microsoft Access Database File and am not having any luck with the update. It appears to update the RecordSet but not the actual Access Database (when I run the following code, close the debug window, then re-open it a field referring to the Count_Value column reflects the update). I am using Microsoft Visual Basic 2008 Express to work with this code, if that is of any interest. If you could look through the code below and see what is causing the RecordSet to update but not the actut
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Dim strDBpath As String
strDBpath = Application.StartupPath & "CourseData.mdb"
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i have code which display one table content to datagridview successfully using following code.
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I'm using an access database in a program that I'm making for my school, the user is able to select an item from the menu, then it sends it to a list box, there is also a textbox to put a quantity of how much of the item you want. I have a field in my database called Amout Ordered, I want to update it with the amount of each item ordered, and I can't figure out how.
View 1 RepliesAlright, let's try this again. I have an mdb file as a database in my program, I need this mdb file to be what my published program reads off of. Is there any way to have Visual Basic (2008 Express) not encode my mdb file to Example.mdb.deploy?
View 1 RepliesI have got problem when using the SQLCommandBuilder class. For me it throws an error saying that the select statement does not return any primary columns.... Which is weird becouse i am sure it does since the select statement is "SELECT * FROM MyTable" I am prety sure that selects everything including the primary column which is set to primary , realy i checked and doublechecked.
Secondly i tried to manually set the column(0) as primary by setting it's property bu no such luck of making it work.
I have these two functions in a class that i instanciate an object from in the main program:
Code:
Public Function GetDB(ByVal DBName As String) As Data.DataSetDim SQLAdapter As SqlClient.SqlDataAdapter = Nothing
Try_SQLdataSet = Nothing
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This Functtion fills the dataset and returns it to my main program where i do lovely stuff with it. (Just as a side note this is a SCADA system and i always need the entire DB which is never bigger then just a few ( 6 ) entries so i must go for "*" ^^). Good part is, this works like a charm, i love it. Now i need to reset a few status bits etc and i assume with the update command. And that is where my joy starts to get stomped on a bit.... The code:
Code:
Public Function SetDB(ByVal dataTable As Data.DataSet, ByVal DBName As String) As BooleanDim SQLAdapter As SqlClient.SqlDataAdapter = Nothing
Dim SQLCommandBuilder As SqlClient.SqlCommandBuilder
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Now this would have been a great and small sollution to updating datasets with the server but obviously it doesn't work. There is that pesky error about my table having no primary key and I know it's lying it just want to annoy me :P. But seriously I am puzzeld why that error wont go away and i have exhausted all the tutorials i can find on this.
I want to move my programs and the database to another computer and hard-disks. It looks to me as though I nearly have to re-create the controls and rewrite some of the code to make it so the programs still work after the move. At least with ODBC all I would change was the DSN definitions external to the programs. Is there an easy way to move or rename a database without loads of work?
View 3 RepliesI'm having problems updating my existing access database in vb. Whenever I exit my program, the changes made won't save. How can I correct this? This is the code I have so far...
Code:
Private Sub Customer_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'AutioEssentialsDataSet3.Customer' table. You can move, or remove it, as needed.
Me.CustomerTableAdapter2.Fill(Me.AutioEssentialsDataSet3.Customer)
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I wrote this code in asp.net(vb):
dim dbconn as New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;data source=" & server.mappath("../kri1.mdb")) Dim DBCmd As New OleDbCommand Dim DBAdap As New OleDbDataAdapter DBCmd = New oledbCommand("INSERT INTO tabela (@id, @nesto, @ime)", DBConn) DBCmd.Parameters.Add("@ID", OleDbType.smallint).value= 6 DBCmd.Parameters.Add("@nesto", OleDbType.varchar ).Value = "2" DBCmd.Parameters.Add("@ime", OleDbType.varchar ).Value = "3" DBCmd.Connection.Open() DBCmd.ExecuteNonQuery()
and nothing happened in my database and there's no compilation error?
I have a access database named login.mdb,which has many tables.i want to update table named "try".in tat table i have two fields viz name and rollnumber.i want to update rollnum of corresponding name.[code]...
View 2 RepliesI have taken over support of a VB .Net application that makes use of an Access database. Now I discover that the developer who wrote this application did not create any unique indexes on the primary key columns for the tables in the database. So none of the primary key fields are actually flagged as being primary keys in access and so no duplicate checking is being performed by Access. Furthermore, the primary key columns are not being auto-incremented with an AutoNumber type in Access, rather the developer has used queries like this to insert rows into the tables:
INSERT INTO Users (pkid, FirstName, Surname, City)SELECT iif(isnull(max(pkid)),0,max(pkid))+1, [@strFirstName], [@strSurname], [@strCity], FROM Users;This application is generally run as a networked application with up to 40 people using the application simultaneously, and combined with design issues already mentioned, this has resulted in serious concurrency issues with several users being assigned the same primary key value. This == BIGNow I need to sort this out (guess what I will be doing this weekend!! Great.). I have thought about maybe using a mutex around the code that calls the Access insert queries; not the neatest of solutions, but it would be the quickest. Ultimately though, I would like to have the database corrected and have proper primary key values in place. But the application is currently running at about 15 different sites, so I need to do some sort of batch update of the database.
i am trying to update the info in my access database and i keep getting a syntax error. This is my first database program and i found a site online that showed my how to do it but when i get to the update it keeps giving me the syntax error.
Private Sub CreateBT_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CreateBT.Click
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
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Here is the error: [URL]
here is my code: what can I do to solve this error
Try
If MessageBox.Show("Save and update database?", _
"Confirmation", MessageBoxButtons.YesNo) = _
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This is my code for update event
Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GridView1.RowUpdating
Connection.Open()
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it is deleting and fetching fine but while trying to update it shows nullreferenceexception was unhandled by user code in this line:
a = Trim(empname.Text.ToString)
I am having a problem updating an access database with new information from an updated dataset. the database consists of 4 columns: User_ID, Login_Name, Password, Access. The following code makes a connection to the database, fills a dataset with the data from the database, reads a txt file with user name and passwords, and should update the dataset and then the database. However, I keep getting an Syntax error on the INSERT INTO statement on the datest.Update(dsUser,"User") line. I have found multiple posts on here showing the correct syntax of how to update a database, but I can't seem to get it to work.
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I have been trying to update my database using datagridview control.my code below gets the data from database to datagridview but when i hit the update button ,,i get an oledb exception saying error in insert into statement .
Imports System.Data.OleDb
Public Class Form3
Dim cnxnString As String = ("Provider=Microsoft.JET.OLEDB.4.0;" & _
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I've been browsing these forums for a day looking for the answer to this, so far nthing has fitted.I've got an access 2000-2003 database containing a whole pile of data for a VB coded application to use. One of the tables in the database needs to be able to be updated with data from the application.The new data is stored in the app as a datatable. I need to replace the original table in the Access file with the datatable in the App.
I'm changing as many as 60 values at a time, so defining these as parameters in an OleDbCommand would be impractical and frankly ridiculous.
I'm developing a program utilizing an Access database and Visual basic. I'm having a problem saving the data I'm adding to the database. I'm entering the data into the database table with text boxes and making a new row and adding it the the table:Database2DataSet.Tables("").Rows.Add(newRow)
I have a grid view for the table, and the new row is added to the table, showing that I'm getting the new information into the table. However, I'm trying to save this new information to the database so its there after I close the program. I've tried using the following but none have worked so far.
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3. DB2, located on a shared network drive, contains nothing more than the structure of DB1, but which I have updated to include new fields in various tables, as well as some new queries and modules.4. I need to be able to copy whatever new table structure there is, etc, without overwriting the user's existing data.
View 3 Repliescom=new oledbcommand("Select tablename SET Roll=@Roll or Name=@Name or Age=@Age WHERE Roll=@Roll or Name=@Name or Age=@Age")
command.Parameters.AddWithValue("@Name", Combobox1.text)
command.Parameters.AddWithValue("@Age", textbox1.text)
command.Parameters.AddWithValue("@Roll", Combobox2.text)
Is this a correct syntax of updating an access database using parameters?
I am trying to make changes to parts of an Access table but can not get the database values to change.I am able to get the datasets and things in VS to change, but the database never shows the changes.
I Have:
' Create an instance for the payrolltable
Dim dt As New MsPeachDataSet.PayrollDataTable
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I got an Syntaxerror in my INSERT INTO but i cant figure out why.
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I have part of an application that reads from a database makes changes to the data then saves the changes to the database.
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I'm using Access 2010 for 2 small databases for a windows forms desktop application.on Form 1, my datagridview updates Paccounts.mdb correctly as follows:
end_OK:
Try
Me
.PaccountsTableAdapter.Update(PaccountsDataSet.Paccounts)
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how to update fields in an Access database through VB. What I'm supposed to do subtract the quantity of the daily orders from the inventory quantity. My textbook is a little bit vague at this point, because the only way it describes updating the DB is manually through the BindingSourceNavigator. I don't want to enter it manually, I want it to subtract the quantity from the orders table.
Public Class frmMicroland
Private Sub frmMicroland_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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:( I am have been trying to update changes from my vb.net program to an access database file and it simply will not work. I have am using table adapters. I'm not familiar with SQL so i can't go that route. It updates the dataset fine but not the database...
I have pasted my code below.
Private Sub BooksBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BooksBindingNavigatorSaveItem.Click
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I have a datagrid view that displays information from a table. Changes I make to the data grid view are not saved. I have a button called btnsave but I have no idea what to put in the click event to save changes to the DB.
vb
Dim ConnStr As String = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}", DataDir)
Dim conn As New OleDb.OleDbConnection(ConnStr)
Dim sql As New OleDb.OleDbCommand("Select * FROM USERS")
Dim dt As New DataTable
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I'm having trouble updating my access database using DataGridView1 on my form. I created a DataGridView on my form linking it to an access database data source. At run time, the DataGridView shows the content of my access database. When I edit the database data in DataGridView, it looks like the database is being updated but when I close the form and reopen, the database is not updated. Do I have to write code and assign it to a button to update the access database? Is there a way to update the database once a new value is entered in the DataGridView? Am I missing a setting that does this automatically?
View 15 RepliesI have a small program with Members table and for subscription. The table has a joindate, expirationdate, status and gracedate collumns. When I run my program n click on a button I want the program to update the STATUS text by checking expirationdate column if is greate or equals to todays date then Set it to Expire.[code]Here is the error message I get on runtime: Syntax error in string in query expression 'Expirationdate <= '26 July 2011'.All I need is to change the status text into Expire if expirationdate <= todays date.
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