MySQL Data Reading, Inserting, Updating?
Apr 22, 2010
I am a bit of a newbie when it comes to vb.net and databases and I have a small favor to ask anyone I am looking for a very basic example on how to connect, read, update and insert data into remote mysql database. I have successfully connected to my database with the code below,, and for the moment I am just trying to LIST data from it in a listview control,, and then would like to find a way to insert data into it and update data.
Al examples I find on the net are too long and usually have too many unnecessary data around the code I need so I get a bit lost in it.Can anyone point me in the direction of SIMPLE examples that are easy to follow or provide a bit of useful code I could learn form.
[Code]...
View 4 Replies
ADVERTISEMENT
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.
View 2 Replies
Feb 10, 2012
I have a problem inserting data into a table on a MySQL database using a VB.NET application. I have a simple form where when I set some data to the textboxes and I press a GO button, the code should execute a function called InsertCar() that takes all these values and insert them into the database and then return true if the transaction is done successfully or false otherwise. My problem is that nothing is being inserted into the table.
Imports MySql.Data.MySqlClient
Imports System.Data.Sql
Imports System
Imports System.Data
[code]....
View 5 Replies
Jan 15, 2011
I have a table in my MySQL database and it contains these items:
User_ID(Primary key, auto-increment)
Username
AvatarPicLink
Location
How can I insert everything into a Datarepeater? Username would be in a Label as would Location, and AvatarPicLink would be in a Picturebox.
View 2 Replies
Feb 9, 2012
[code]The above code does not insert data into table. Please fix this issue.Tell me the proper and most widely used way of Inserting, Updating & Deleteing Data in Database.
View 16 Replies
Apr 11, 2009
I have tried everything.but im not able to insert updat and delete the excel file..im able to connect the excel sheet.the connection also seems to be opened...here s my connection string:
Dim sConnectionString As String
Const kunal = "C:"
sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
[code].....
View 4 Replies
Oct 22, 2009
I have login system and also I know how to get 1 exact row from mysql but how can I create a table which will be filled with values from mysql table?
[Code]...
View 1 Replies
Mar 15, 2011
I have a DetailsView Control but need help with binding, updating and inserting hookup. My code below does not bind and open my DetailsView as I expect it to (either in Edit or insert mode when my page loads.[code]
View 1 Replies
Feb 11, 2009
(1) my datagrid view is giving me some error msg when loading so pls what wrong with mycode?
(2) i want to use a listbox but dont know how to using code(run-time).
(3) and how do i save all the mess into a database keeping in mind need to guide against wrong entry
My code:
View 4 Replies
Mar 29, 2010
i have a problem in inserting the listbox value into mysql database in vb 2008 i.e
if i select a video file i.e D:videosvideo1.mpg and add a msgbox() event before inserting into data base it shows the exact path i.e D:videosvideo1.mpg but when i check my database it shows me as D:videosvideo1.mpg how can i solve that
View 2 Replies
Feb 2, 2012
I know this is simple, but for some reason.. Im just simply trying to take my whole dataset and put it into my premade mysql tables.
[Code]...
View 15 Replies
Sep 4, 2009
insert a datatable into a mysql database? The way I'm doing it now is that I'm doing a for each-loop and inserting one and one row. Is there a better way to do this? I have like 500+ rows, so it takes a while to execute the loop.
View 4 Replies
Nov 10, 2011
i need some function like adodb.recordset on vb6.0 on vb.net but seem i cant manipulate it like recordset because i want to manipulate in retrieving,inserting and updating my record on just only how call on the database im using mysql database..
View 4 Replies
Jan 23, 2011
i have a button and 2 text boxes to insert datai have a button and 2 text boxes to read the datait seems that when i insert a row, it is not being inserted as the very next row. or at least it is not reading it in order1st. I add rws with the values (2 columns in table) 1 and 1, then 2 and 2, then 3 and 32nd. I read the rows, the do not come up in order 1 and 1, then 2 and 2, then 3 and 3. I will get somethign like 1 and 1, then 3 and 3, then 2 and 2,it does read it the same way each time i read it.
vb.net
Private Sub btnInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnInsert.Click
[code].....
View 5 Replies
Jun 17, 2009
I am trying to read records from a table base on unique values read from another table and want to write these records depending on value from a For Loop into different tables. This is code is what i have so far and it only read the last value of the loop and does not even write it to the appropriate table. [Code]
View 2 Replies
Mar 24, 2011
How can I do this, this what I got so far.
Dim ClassID As Integer = 1
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database
[code].....
View 1 Replies
Dec 28, 2009
I have written a Windows GUI ( using VB.NET) -> Which updates some values into MySQL DB through webrequests. During this process I am updating some richtext data into mysql DB. It is storing the data in the DB along with rich text tags. Is there any way to avoid them
HTML
<pre>{
tf1ansiansicpg1252deff0deflang1033{fonttbl{f0fnilfcharset0 Microsoft Sans Serif;}{f1fnilfcharset0 Times New Roman;}}
{colortbl ;
ed0green0lue0;
[Code]...
INSERT INTO {TARGET REGION}.(TARGET TABLE} ( SELECT * FROM {SOURCEREGION}.{SOURCE TABLE})How can I avoid the above problem. So that only actual content is updated in the DB instead of the data with richtext tags.
View 5 Replies
Nov 23, 2008
Q1)My ASP.NET VB Script will write long writings - like many thousand words into my Access DB but i have previously had problems with the text containing characts such as '.Is there a way of inserting such?
Q2)When I read a database field in consolidates it into my string variable on a single line. What variable type should I use to have it maintain the line spacing and stuff.
View 1 Replies
Oct 28, 2010
I have a DataGridView filled from the MySQL database table. I want the changes made on the datagridview records, update the table when a Save Changes button pressed. Here's my code which takes the data from the database and adds to the DataGridView.
Private Sub cihazmodeli_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cihazmodeli.SelectedIndexChanged
'Loads database records to Datagridview
If Not CStr(cihazmodeli.SelectedItem.Value) = "" Then
Dim sorgu As String = "Select
[Code] .....
View 7 Replies
Oct 28, 2010
I searched internet including this forums to find a working example about the following subject but couldn't find a solution about my problem.I have two main problems:1) I have a DataGridView filled from the MySQL database table. I want code update the changed records, when a "Save Changes" button pressed by the user.I created the code below to make it. It makes update on the changed row, but enters Null values. So after the update on the database, the values become null.2) At "Private Sub cihazmodeli_SelectedIndexChanged" section my code reads the database and loads the values to the DataGridView. When I make another change on the Combobox, it adds the values of the new SQL results at the bottom of the previous records. I tried to clean the results using either Clear() or some other methods but got a message meaning "Content entered with DataSource can not be cleaned with Clear or other methods". What is the way of clearing the previous choice's records?
Code:
Dim cn As New MySqlConnection("Data Source=localhost;Database=stokprogrami;User ID=root;Password=mypassword;")
[code].....
View 8 Replies
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].....
View 4 Replies
Jul 15, 2010
working with data in VB.NET, and the easiest method seems to be XML, since ini isn't supported. So I tried but couldn't find a way to read XML attributes and then replace/update them if needed. So for example I have this XML File:
<?xml version="1.0" encoding="utf-8"?>
<Entries>
<Entry1 font="Arial.ttf" R="255" G="255" B="255" effect="Stroke"></Entry1>
<Entry2></Entry2> - In the same format
</Entries>
How do I load those as strings, for example I want to write them to a file later, and I use the code:
sw.WriteLine("Font")
But instead I want to load the attribute from Entry1, instead of loading it from pre-defined variables. one more thing I want, when the user clicks a button to update an attribute (Font for example) to the current textbox text.
View 1 Replies
Apr 19, 2010
I 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.
View 2 Replies
Mar 11, 2010
How to read per row in a table in mySQL as the database? i want each username when they login, they will go to their respective forms. Like for example, there are 3 users and each user have their different forms.h this.This is my code:
Dim conn As MySqlConnection
Dim myCommand As New MySqlCommand
Dim dr As MySqlDataReader
[code].....
View 3 Replies
Jun 10, 2011
why do i have errors in updating a column using where? this is my code "Update inventory Set isExpired='1' from inventory where expirationDate= '" & DateTimePicker1.Text & "'" my date format is yyy-MM-dd can anyone help me pls?
View 1 Replies
Aug 2, 2009
I have mysql connection for user to login, but I need to read some more information about the user, when he is actually logged in...
Code that I'm using for login:
Code:
rivate Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[code].....
View 1 Replies
Dec 23, 2010
I use the following code to read the standard output from a command line application from a main winforms application, and then I use the BeginInvoke code to update a textbox with the status. What I am not sure about is if I can have a smoother process. The code loads up about 10 to 20 text inserts, and those are all seen at once... not a smooth process where each status is updated. Any thoughts on if the reading of the standard output and/or the beginvoke code could seem more smooth to the user?
Delegate Sub UpdateUIStatusHandler(ByVal StatusMessage As String, ByVal JobName As String, ByVal Direction As String)
Dim ProcessJob As New ProcessStartInfo(GSyncExe, RunJob)
ProcessJob.UseShellExecute = False : ProcessJob.CreateNoWindow = True : ProcessJob.RedirectStandardOutput = True : ProcessJob.RedirectStandardError
[code]....
View 3 Replies
Apr 3, 2011
I have an application that gathers data from a SQL database that is used by a 3rd party helpdesk application.My application is pulling out information of the number of hours worked by each engineer for the current and previous 2 months.Also as part of this process, my application works out the target hours for each of those months.
My application has 3 groupboxes whose label is generated at runtime. My application gives the Groupbox1.text the name of the current month, Groupbox2.text the name of the previous month, and Groupbox3.text the name of the month before that (e.g. Mar, Feb, Jan).
What I am trying to do is have 2 text boxes for each month where I can enter the number of engineer holidays taken and the number of public holidays if any. I want to store these values in an XML file, and I guess they need to be stored to match the Groupbox text (i.e. Mar, Feb, Jan).
When the application starts, I need to parse that XML file and re-populate the text boxes with those number of days - BUT if the month has moved on, so that the Groupboxes are now called Apr, Mar, Feb then I want the Mar and Feb data to be loaded, and I want the XML file to be updated so that Apr is added and Jan is removed from it.I want the XML file to keep the current and previous two months figures only.
View 1 Replies
Dec 6, 2010
Eventually, I'm going to want/need the program I am creating to either:
A. Access the MySQL database from my website.
Or.
B. 'Load' a PHP page, and grab the contents off of it. [URL]Are these options avaiable in VB.NET ?
View 8 Replies
Sep 23, 2008
I am trying to read from a MySQL DB, and then output to the console like this:
[Code]...
View 2 Replies
