Error Received While Updating Database Records?
Sep 5, 2011
i have made a database windows forms application, i can add records, when i add a record , fill out a few fields then save it saves OK but if i then change some fields data then try to re-save i get a error: object reference not set to an instance of an object.
the code that is highlighted is:
Private Function GetRowData(ByVal custRow As calllogDataSet.CALLLOGRow,
ByVal RowVersion As Data.DataRowVersion) As String
Dim rowData As String = ""
[Code]....
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Jun 17, 2011
All i'm tring to do is connect to my MysQL database on my Local host and update a record in my "customers" Table. The Error i've been getting is under Public Sub DeactivateAccount,the MyCommand.ExecuteNonQuery() line of the code. The error is saying there is "no database selected". Below is the code i have.
Imports MySql.Data.MySqlClient
Public Class FinalFailedPinNumberAttempt
Dim connectionstring As String = "Server=localhost;user id=root;Password=;
[Code].....
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May 17, 2006
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
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Jun 17, 2012
I am getting the attached error while updating or deleting the records. [code]...
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Jun 12, 2011
As part of the application I'm writing in Visual Basic, I have written code to display records in text boxes and cycle through each of them one record at a time. I'm having trouble getting the code I've written to update records to work however. I am new to this however, so I'm sure I've made an obviously glaring error that you more experienced people can point out for me:
Public Class frmRecords
' VARIABLES TO AID NAVIGATION THROUGH RECORDS
Dim moverow As Integer
[code]....
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Feb 10, 2006
Erm I am still a freshman who still learning Visual Basic and I'm currently facing a problem regarding adding a new record and updating my database records in the form, or the whole project.
If MessageBox.Show("Do you want to save the data?", "", MessageBoxButtons.YesNo) = DialogResult.Yes Then
Me.ArtistsBindingSource.AddNew()
[code].....
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Jun 12, 2011
I want to use a progressbar to show that I'm retrieving the records from the database so that the user wont be confuse if the program is still running or not. Here's my code.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
cs = "Initial Catalog = KRADB; Data Source = .; User id = lab; Password = 'clrscr2010'"
sqlcon = New SqlConnection(cs)
sqlcon.Open()
[code]....
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Jul 28, 2010
I was trying to edit and update an existing record in my database. I am getting an error, my code is here:
Editing Records
Private Sub btnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEdit.Click
Dim qry As String
[code]....
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Sep 19, 2011
how to seek a record in access (.accdb) file and update.
i have posted a question in below thread how to work with (i mean connect to a access database)....
[URL]
I could able to navigate through records but, i want to seek a particular record and update accordingly.....
when i used find method i am getting an error as below
"Table doesn't have a primary key."
But my database has a primary key.
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Sep 12, 2010
I have a form in which I am updating records to table Users in database China.accb. The btnClick sub successfully updates the Dataset. However, the actual table Users never gets the update. What am I doing wrong? The code is below.
[Code]...
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Jan 20, 2010
I would like to know if how can I update my database using oledbCommandBuilder below here is my code:
'save changes made and store it to our database
newDataRow = ds.Tables("employeeTable").NewRow()
newDataRow.Item(0) = comboPosition.Text
[Code]....
The error that I get is "Syntax error in INSERT INTO statement." It almost took me 1 day but I cant configure how it still become error. below here is the part where the error came from
da.Update(ds, "employeeTable")
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Dec 28, 2011
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim dbProvider As String = "PROVIDER=Microsoft.ACE.OLEDB.12.0;"
[code].....
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May 27, 2010
i can't find anything's wrong but the the program keeps prompting syntax error
Code:
sql = "UPDATE tblclients WHERE Key_Contact_Person ='" & txtclientname.Text & "' SET (" & _
"[position] ='" & txtposition.Text & "'" & _
", [Deptment] ='" & txtDept.Text & "'" & _
[code].....
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Apr 23, 2012
I'm trying to update a record in MS Access database with the code below. But it says 'Syntax error in UPDATE statement and highlights cmd.ExecuteNonQuery()'.
[Code]...
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Apr 8, 2011
i m having problem while updating my database... In this code when i delete records then it will deleted but it can't show updated data..for viewing new updated data i hav to again open the form ... so is there any code which i miss??? to update database @ runtime??
[Code]...
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Jul 26, 2011
I 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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Sep 30, 2009
con.Open()
sql = "select * from songs"
da = New OleDb.OleDbDataAdapter(sql, con)
[code]...
it says syntax error in INSERT INTO
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Jun 9, 2010
I'm testing my program, which uses an access database, and it works just fine on:
Windows XP with .Net Framework 2.0 sp2
Windows XP with .Net Framework 3.0 sp2
Windows XP with .Net Framework 3.5 sp1
But in Windows 7 with .Net Framework 3.5.1 I'm getting an error in the ExecuteNonQuery() line when updating a record in the database.
The code I use is:
Dim con As OleDbConnection
Dim cmd As OleDbCommand
Dim cGebruiker, cWachtwoord As String
[code]....
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Nov 17, 2009
I have written the following lines of code
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.OleDb
[code]....
When I run the program, it comes back with the error message
Invalid column name 'testtx2'
I perhaps need to add that s_name is a valid field name in the customer table.
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Mar 15, 2011
i was trying to get a ftp client work on vb.net but i recieved a error 530 not logged in.
[Code]....
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May 1, 2009
I am trying to update a link table with values from multiple datagrids, the field types in the link table are numbers and the value selected from the datagrids are also numbers.
I am getting the following error:
The OleDbParameterCollection only accepts non-null OleDbParameter type objects, not String objects.
In line : cmdCompany.Parameters.Add("@COMPANY_ID")
[Code].....
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Feb 9, 2011
I am trying to use AJAX UpdateProgress to display the loading image when the zip file is being created but get the following error:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Detals: Error parsing near 'PK'.
Below is the code for my .aspx page
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
[code]....
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Jul 26, 2009
I have ALWAYS used the SQLDataSource to update my records in my SQL Server 2005 database, so i am not really sure how this would be done in normal code. I am using VB.NET but if you are a C# developer and want to show me some code that is more than welcome as well.
I am using ASP.NET 3.5.My user will see a page with 5 Text boxes with their contact details in. Those details I will get from a SQL Server DB and when they go and change the text in the text box and click submit, it must then save the changes.
This is very easy with the SQLDataSource but how can i code this myself?
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May 8, 2009
I am trying to update a databse using a grid control, I've enetered multiple rows in the row and tried to save the data, unfortunately I'm only saving the last row entered, is there a way to save all the rows entered using this approach?
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|aop29.mdb"
Dim objConnection As New OleDb.OleDbConnection(ConnectionString)
Dim sql As String = "Select * from Customer"
Dim daaop5 As New OleDb.OleDbDataAdapter(sql, objConnection)
Dim ds As New DataSet()
[Code] .....
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May 8, 2009
I am trying to update a databse using a grid control, I've entered multiple rows in the row and tried to save the data, unfortunately I'm only saving the last row entered, is there a way to save all the rows entered using this approach?
Code:
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=/DataDirectory/aop29.mdb" Dim objConnection As New
[code]......
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Aug 17, 2011
I need my calculations to stop performing when an error is received[code]..
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Oct 27, 2009
how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
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May 2, 2012
in my windows application i am retrieving the recently modified data from warehouse database server using static ip suppose two columns empno,designation from emp table in this i am retrieving the recently designation modified employees and in my local server database also i have emp table with all employee details which are in warehouse database now i have the designation modified emp details using this i want to update that designation details in the local emp table to that related employees only not all employees designation actually the records may be more than lakhs records some times i have to update 100 record some times thousands records if i am using loop it takes more time?
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Feb 7, 2009
I know that when I add a record to a table through a binding source using a binding navigator - it completely handles the IDENTITY PK (it's bound to a textbox and you can see it immediately).
Now I'm trying to do this differently in another part of the program - here I only have a BINDING SOURCE - that's bound to a DATAGRIDVIEW.
I put a new record into the DGV like this
Private Sub vendorfilesDGV_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles vendorfilesDGV.DragDrop
If e.Data.GetDataPresent(DataFormats.FileDrop) Then
[Code]....
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Jul 18, 2012
I'm struggling to think of a reason why I should be getting an 'Access denied' error when trying to save an Excel document opened through a program written in VB 2010 Express. The program is essentially glorified Excel automation. It converts information from hundreds of Excel documents into a few small text files in order to improve operation speed. The software is designed for use by no more than a dozen or so people in the office who are all editing these Excel documents (through the software), and saving changes. They edit a given document by selecting it in a list in the main form, which then changes the document to writeable and opens it for them. A FileSystemWatcher detects changes in the folder containing the Excel documents so that the aforementioned text files can be updated when the user saves the Excel document.
[Code]...
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