I've written an application and I'm trying to utilise a database behind it. I've created a mysql database, and table which all appears to work correctly. I appear to have connected to the db correctly too. And hit a bit of a brick wall. As a side-note, within Visual studio connected to the database using the add data source wizard, I then dragged and dropped my db table's column onto my form that intends to display them all (6 textboxes, including primary key) and that now displays the first record of the table. It confused me, because i did this as soon as I had setup the database with no visual basic code assisting, so there wasn't even a connection string?!
One functionality i want to have is to press a button and cycle through the table's records using the form by the unique id, how would I do this? I'm essentially asking how can I enter a number in a textbox which would then return me the relevant primary key and data attached to that record.
I got the whole database thing figured out now I've got a problem with these parametrized queries. If I remove them and just explicitly put in the data I'm looking for the datareader works, however doing as I have below returns no results in the datareader.
I'm developing a small project (just for learning, I'm not a pro) which involves creating software which could be used by a store owner for invoice generation. It involves storing all the store's products in a MySQL 5.5 database. Visual Studio 2008 is used for front end (Project was started in VS2005, later converted). MySQL ODBC Driver 5.1 is used for connection purposes. I'm still a student and haven't been able to learn .NET yet. So, I used the following link to connect the Database and the interface. I'm able to obtain all the data from the database like 'Product Name', 'Price' etc on the VB's forms through labels.
Now, for the purpose of invoice generation, the data in the labels i.e, 'Product Name' and 'Price' should be added to another table named 'Cart' whenever a button named 'Add to Cart' is pressed. How can I implement it? I mean, could anyone provide me with a code snippet that fetches the data being displayed in the labels and adds it to another table through 'INSERT' statement? P.S Basically what I need is a code snippet in VB that lets me execute an SQL query(any one like INSERT or SELECT or UPDATE) when a button is pressed in a form.
I'm pretty new to Visual Basic, do mostly web programming in PHP/MySQL. Need to pull data from a MySQL Database using Visual Basic Program I'm making. Need to when I click a radio button, it shows in text box only the results from a table with a certain trait(as set in the database) etc. For example if an item is set to a certain category. And i click the radio button for that category it shows me only items in that category. I've attached an image of sort of what I've got. I've already downloaded the ADO connector from mysql site. I just need kind of a push from there or a link to a few really good articles. Followed a few youtube videos but I was unsuccessful somehow.
I'm using the latest version of the MYSQL DotNet Connector (currently 6.3.7) and I am unable to connect to my database at all with it. It keeps giving me an error. I can connect the the database using SQLyog with the exact same information but not with this.
This is the error:
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond Here is the code I'm using:
Dim conn As New MySql.Data.MySqlClient.MySqlConnection("" _ & "server=mydomain;" _ & "user=myusername;" _
I am trying to follow this userguide url... to basically build an application that will allow users to connect to my database, from an exe file. I'll try to explain as best i can. The plan is, users will launch an exe file that i have built in Visual Basic(VB) 2010 Express. When they launch the application they will see a 'login screen'.I am following the example guide (see link above), and will customise it once i can connect to the database. For some reason whenever i connect to the database it gives me two errors, the first is if i use the 'debug' mode in VB to test the script (note it doesn't produce any build errors), the second is if i build the application and run it as my users would.
1)Error Connecting to Database:Access denied for user 'mike'@'92.**.**.***' (using password:YES)
2)Error Connecting to Database:Unable to access any of the specified MySQL hosts..The ip address starred out (*) is my local machine ip address.The server is the server in which my Database runs on. 'mike' is a listed user on my 'user' table, the password i use is the password assigned to this user on my table.
3)I've rebuilt the whole VB project, but still no joy, wern't expecting it to as there were no errors generated.
4) I've read, but don't really understand that it could be something to do with my database not being able to be controlled remotely, only locally. I started digging into 'Access Your MySQL Server Remotely Over SSH', didn't really know if i was going completely off the mark, it didn't mention needing to do any of this in the guide i've been following, but just a thought. It might be the case as i've tried to access my database through a programme called MySQL Administrator. I punch in the host,username etc and connect to my database, for some reason it won't allow me to add new users, could this be because i can't control my database remotely? Would this stop what i'm trying to do working?
5) When trying to install the MySQL.Data.dll file i had great difficulty in choosing one and finding it, adding it to my project using the 'Add reference' in VB. Finnally got it how it should be (i think), installed MySQL.Data.dll Ver 6.1.2.0 into my project.
I want my vb application to communicate with a MySql database on server on a LAN. What connection string can i use? Also, what syntax can i use? My application is installed on many computers in LAN with one central MySql database. I want all data to go to the database.
I'm wondering if I create a program that connects to a mysql database, will they be able to decompile it and do anything with the mysql connection information?
I am using Visual Studio 2010. I want to do database connectivity using VB.Net and MS SQL Server 2005. I know 1 way of doing this. Following are the steps...
1. Create a new Data Source Using Data Sources Window. 2. Select the appropriate view like details view/ data grid view for that data source 3. Drag that data source on your form and connectivity is done. Also all the controls are created by the visual studio.
This feature is really cool but I want to learn database connectivity by pure coding without using such advanced features. Also is it possible to do connectivity from a class library ?
My project is about recipes. I want to automatically create table inside in mysql database when I hit the add button on my project through codes. First is when I input recipe name in the textbox1 then my input will be saved in the recipes table under recipe name column and also create a new table through codes on what i input in the textbox1
Example of my database in sql texbox1 input will be save here recipes - id, recipename And then it will also automatically create a new table in mysql database, create newtable, with id, quantity ,unit, ingredients
Private Sub iadd() Dim command As New MySqlCommand("insert into recipes (recipename) values ('" & TextBox1.Text & "')", connection) Try connection.Close() connection.Open() command.ExecuteNonQuery() [Code] .....
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)
Is there any way to have the program still run efficiently when connecting to an mysql database? Would System.Windows.Forms.Application.DoEvents() work anywhere?I have it connecting every 3 seconds on a timer and during that connection the program locks for a second.
I have an issue with my code. The application interacts with a MySQL database on a remote server, I have access to this server. When my app is running the insert into code I m getting this error: "Conversion from string "INSERT INTO phpvms_fsspireps(pil" to type 'Integer' is not valid."
The variable which holds the Inser Into string, during break point debug gives me this: ""INSERT INTO phpvms_fsspireps(pilotid, code, flightnum, depicao, arricao, route, route_details, distance, aircraft, flighttime, flighttime_stamp, landingrate, submitdate, accepted, log, load, fuelused, expenselist, source,
[code]...
And this is my code.
Dim conn As MySqlConnection Dim cnString As String cnString = My.Settings.constr
[code]...
the DB spec: Total DB size: 190,1 MB Total Tables: 106 and the table specs. The titles are in Greek but I think you can understand it from the data. [url]
My question is how to link database from MySQL2005 with the interface created in Microsoft Visual Studio 2010 Express?Is it possible to link the database into my interface?
I m creating a Log In form at VB.NET and i have some problems The connection between the application and the web server opens fine and i can login if i use the MD5 encrypted text of the database.
My program connects to a Mysql Database. It allow registration and login. I Need this to update the "BankACCid" column(?) in Mysql for the current logged in user.This is the code that doesn't work
MySql Connection Dim conn As MySqlConnection conn = New MySqlConnection()
I have an access database that has nested queries. For example, the querydef below is called qs_Pedon_type: SELECT qs_Pedon_basic.peiid, metadata_domain_detail.domain_id, metadata_domain_detail.choice, qs_Pedon_basic.siteiidref FROM qs_Pedon_basic LEFT JOIN metadata_domain_detail ON qs_Pedon_basic.pedontype = metadata_domain_detail.choice_id
I am able to copy the complete online mysql database to the local ms access database, but the problem is that the local database needs to be emptied before the new data is being copied. And a progressbar needs to display the entire progress. Here is the code what I have now:
Private Sub StartScreen1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim dt As New DataTable()
I am developing a chat application using online connection to a mysql databbase. But i am facing a problem. After 10 minutes, MySQL closes all the chat connections because of the 600 seconds timeout (has been set by the host service i am using). I don't understand why is that happening cause every piece of my code which needs data from the database opens and closes the connection (i mean that it dosn't maintain the connection after the query's execution). If i .close() and .dispose() the connection, it still appears in mysql at sleep mode (it terminates only if i exit the program).
Dim MySQLCon as New MySQLConnection Dim MySQLCom as New MySQLCom Dim counter as Short
I have determined thanks to the last q & a that there is something wrong with my "save to db" code as well as my "retrieve to picture" code. Even If I manually save the pic in the db it stil wont retreive. This is code i patched together from 3 or 4 examples around the net.
Dim filename As String = txtName.Text + ".jpg" Dim FileSize As UInt32 Dim ImageStream As System.IO.MemoryStream[code]......
I am trying to make a login system mysql try to connect to a mysql database.
Here is my code:
Imports MySql.Data.MySqlClient Public Class LoginForm1 Dim MySqlConnection As MySqlConnection Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click MySqlConnection = New MySqlConnection()
I am writing a message system on my server, the xml is something like this
<xml> <entry> <sender>[code]....
my problem now i guess is 2 fold, i wish to combine the first 3 queries into a single query and place in a list or a collection or is there a way to do this with a single query that will give me my desired result?
What i have going on, is i have a MySQL connector as a resource on my application, and im basically trying to connect to my MySQL server, to either a) register a new account, or b) check that the account exists and they are premium, and login, Now what i have run into problems with is: My MySQL Database Name has a _ in it which VB is not allowing for some strange reason.
The code i am using is below
Imports MySql.Data.MySqlClient
Public Class Form1
Function UpdateRecord(ByVal query As String) As Integer
[CODE]...
How i can allow the _ into the application, because the only databases that don't have a _ in the user or dbname are a) Paid ones which i DO NOT have the money for or self hosted ones, i cannot leave my computer on 24/7
I can have mysql database. but i have not mysql. how to connect this database vb.net 2005. but i have mysql-connector-net . I want to mysql-connector-net use to connect this database. database path(C:Documents and SettingsAdminMy DocumentsVB.NETStock delnaSTC.sql)
I have an Access database with some table and some queries.Here you see one query which returns 2507 records:I also added this database to a vb.net project.However, if i try to fill the datatable of the query with the specific tableadapter, the datatable stays empty. Also when I click the query in the dataset and choose 'preview data' I get none of the 2507 records:Any idea why he won't load the records into the dataset?
I have a rather complicated application (for me anyway). I have a word template setup with text controls. A web app with ASP controls and vb backend code binds data to the text controls using an xml file.
