Getting Error When Updating Records In MySQL Database
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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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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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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Oct 3, 2010
i build a code that can insert my records to mysql database.. the codes are correct it can save records to the mysql database. Now i want to know is what code will i used that will show an error if the records already exist, so it will not make the same records again. here is my code for my INSERT code for mysql databas.[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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Feb 21, 2011
I am using the following codes to Save records to MySQL database from VS2008.
Dim cmd As New MySqlCommand
If cmdSave.Text = "&Save" Then
'save computer main
ConnectComputerDB()
cmd.Connection = CompDBCon
cmd.CommandText = "INSERT INTO tbl_items " _
[Code] .....
Is it the right way and proper method to save records to MySQL database...?
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Dec 8, 2009
I'm trying to test some stuff out, like adding employees and stuff like that.
Now it used to run on an Access database, but I've made the jump to MySQL.
Now to add an employee I use this code
Private Sub btnOpslaanWerknemer_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOpslaanWerknemer.Click
Try
[Code].....
now I get the following error: "Error: MySQL.Data - You have an error in your SQL syntax; check manual that corresponds with your MySQL server version for the right syntax to use near '?,?,?,?)' at line 1.
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Jan 26, 2012
I am trying to search through records of my database in a VB form and I don't have any errors or warnings but it doesn't work.
Here is the code and a screenshot:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim search As String
search = boxSearch.Text = txtSearch.Text & "'"
Dim foundRows() As DataRow
foundRows = taxDS.Tables("Orders").Select(search, boxSearch.Text)
End Sub
txtSearch.DataBindings.Add("text", taxBS, boxSearch.Text)
boxSearch.DataBindings.Add("text", taxBS, boxSearch.Text)
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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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Jun 4, 2010
I'm connecting to my mysql server using ODBC in vb.net, the database is shared throughout the company because it is used in an accounting program (simply accounting), each user has their own account user/pass to login to the database. I have developped a program that uses the accounting database and combines it with other information, my problem is that at least once a day I get this error when I run my program: "(10061) ERROR [HY000] [MySQL][ODBC 3.51 Driver]Can't connect to MySQL server on"and the error persists for at least 4 hours, for some reason it starts to work again later on in the day.
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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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Mar 14, 2010
I get this error, while I'm testing the code below:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '[student](ID, LASTNAME, FIRSTNAME, SCHOOL) VALUES ('333', 'aaa', 'aaa', 'aaa')' at line 1I just recycled the code that I used in manipulating ms sql database. So the syntax must be wrong. What might be the correct syntax for adding records into mysql database?Here is my current code:
idnum = TextBox1.Text
lname = TextBox2.Text
fname = TextBox3.Text
[code].....
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Feb 24, 2009
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ", 'Montes','M','Naga','09103801462','EM','HplolP')' at line 1[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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Aug 26, 2009
i tried to save image into my database, it saves without error but when i tried to check if it saves in mysql, the data about my picture id save, but the image i save return a value of 0.
[Code]...
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Sep 8, 2011
I had try several type of date format and yet, I stil can't get it right. Below are the coding which had been writen
[Code]....
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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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Nov 2, 2009
i have a website www.aybydinnovations.com.I setup a new mySQL Database into my webserver.I am developing vb.et application that will connect into that database from my webserver.
Here is my codes:
Imports System
Imports System.Windows.Forms
Imports System.Net.WebRequestMethods
Imports MySql.Data.MySqlClient
[Code]...
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May 1, 2011
How connect Vb.Net to MYSQL..? How to add info to database user informations using mysql database. How to call login infos using mysql.
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