Difference Beetwen - Dim Connection As MySqlConnection - Dim Connection As MySqlConnection()
May 3, 2010...this:
Dim Connection As MySqlConnection
and this:
Dim Connection As MySqlConnection()?
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MySqlConnection.ConnectionString?
Jan 21, 2012Dim SQLInfo As String = "server=https://lotus.x10hosting.com:2083/frontend/x3/index.html;" _
& "uid=uid;" _
& "pwd=pwd;" _
[code].....
Can't Connect To MySql, Using MySqlConnection
Jan 11, 2011Just got a mySql database up and running (about 3 weeks ago) and it's working fine for web pages with PHP, but wanted to see if I could access it from Visual Basic (why not right). So I downloaded whats needed to get the MySqlConnection working and Been looking around online and nothing is very intuitive as to what the problem is. The error message is:
MySql.Data.MySqlClient.MySqlException: Host '192.168.2.184' is not allowed to connect to this MySQL server
Reusing MySqlConnection.serverString?
Jun 20, 2012Say I have a connection to a database. After reading some stuff I want to connect to the same database. So I naturally use the first database mysqlconnection.serverstring the password and username is not included in connect1.ConnectionString. So how can I do so? Is this by design?
[Code]...
Type 'MySqlConnection' Is Not Defined
Dec 19, 2009I am create a new project in Vb 2008 Express edition. And back end using MYSQL( MYSQL ODBC 5.1 Driver) . Now running is correctly but Build time have a lot of error in this project depending MYSQL connection part. What can I do...? [code]
View 2 RepliesError MySqlConnection.Open() Unhandled
May 6, 2012im getting this error MySqlConnection.Open() Unhandled Here is the code i'm using
Imports System.Data.SqlClient
Imports MySql.Data.MySqlClient
Public Class LoginForm1
Dim MySqLConnection As MySqlConnection
[code]....
VS 2010 Difference Between Closing A Connection & Disposing A Connection?
Sep 7, 2011When it comes to database connections what is the difference between closing a connection & disposing a connection? I'm hoping to gain a more technical understanding of what happens when each is called & the effect on the database.
View 5 RepliesSafe While Using A Thread Pool With A Global Mysqlconnection?
Mar 1, 2011Im creating a service for a mobile platform and I need to process user messages on a different thread than they were created on to leave the threadpool open.Anyway my App will be using a MySQL database and when it gets a message it will add the message to Another thread pool. But in the sub that procceses the messages I will need to perform query's on the database. So i know i can use a global variable and it will be visible to all threads but is making database operations safe while using a thread pool with a global mysqlconnection?
View 2 RepliesDifference Between Oledb Connection And Odbc Connection?
Nov 9, 2009i want to ask what is the difference between oledb connection and odbc connection. I have a case, my office used ncomputing then i have to developed an application using sqlserver 2000 and vb.net 2005, i used oledb connection. When i try to implement it in ncomputing, why user must has admin access level and dbo level in sql server, it seems trouble when all users are admin. But there's a rumor that when using odbc connection, we dont need to give admin access level for users.es.
View 1 RepliesVB2008 With MySQLConnector .net 6.1 - Error "BC30560: "MySqlConnection" Ist Im Namespace "MySql.Data.MySqlClient"
Aug 22, 2009I have the following code:
[Code]....[Code]....
I get the compiler error message: error BC30560: "MySqlConnection" ist im Namespace "MySql.Data.MySqlClient" nicht eindeutig. in English (I think): "MySqlConnection" is not unique in Namespace "MySql.Data.MySqlClient".
Assign A My.Settings.Item Connection String To Cmd.Connection Connection String Value?
Aug 25, 2009How do I assign a My.Settings.Item connection string to cmd.Connection connection string value?
Dim cmd As New SqlCommand()
cmd.Connection = My.Settings.Item("csStaffHoursWorked")
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "spSaveDeltekImport"
Display Connection Properties Dialog For Connection String Browsing(for Database) In Run Time?
Feb 5, 2010Is there a way to display the connection properties dialog for connection string browsing(for database) in run time?
As I want the user to be able to connect to various database using the GUI.
Error - ExecuteScalar Requires An Open And Available Connection - The Connection's Current State Is Closed
Aug 3, 2011i have an application. which is executed after every 5 mins. i have an open connection but it gives me the following error:
ExecuteScalar requires an open and available Connection. The connection's current state is closed.
my code is something like this. I have shown where all i am using ExceuteScalar()
Sub Main()
Try
connection.open()
cmd.ExecuteScalar()
[code]....
Sql Server - .net Program Dataadapter Connection Closes After Fill But Database Still Shows Connection?
Aug 19, 2010After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives
Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable
[Code]...
[2008] Error - Unable To Read Data From The Transport Connection: The Connection Was Closed
Mar 15, 2009I have a simple scraper. It works on some websites, but on some there is this Error:
Quote:
IOException was unhandled Unable to read data from the transport connection: The connection was closed
It is occuring at "Dim htmlresults As String = Urlcontents.ReadToEnd()".
'Create the HttpWebRequest object
Dim req As HttpWebRequest = WebRequest.Create(URL)
'Set the timeout to 1 second (or 1,000 milliseconds)
req.Timeout = 10000
[code]....
Disable The Local Area Connection While Leaving The Wireless Connection Enabled
Jun 21, 2010I am attempting to write a program that will disable the Local Area Connection while leaving the Wireless connection enabled. My company is using net-books in our stores to demo air-cards and we need to keep them off of the LAN. I'm new to VB and VB.net, and it's been a while since I did any type of programming. I've gathered some code that others have posted in forums and tutorials and I'm working through a tutorial book, but I finally believe that I am stuck.
[Code]...
ExecuteNonQuery Requires An Open And Available Connection, The Connection Current Stat Is Close?
Nov 30, 2008i make a class and when i call on form then that error occurs "ExecuteNonQuery requires an open and available connection, the connection Current stat is close "
Class Code isImports System.Data.SqlClientImports System.DataImports System.StringPublic Class DatabaseKits Dim Cn As New SqlClient.SqlConnection Public Function BuildConnection() As Boolean Try Cn.ConnectionString = "Persist Security Info=False;Integrated Security=True;Trusted_Connection=Yes;database=BizAimsPro2008;server=Server-2k3s" BuildConnection =
[code]....
Networkstream Connection Fails & Httpwebrequest Connection Not Reading Fast
May 17, 2012I am connecting to a data stream that pushes data continuously and when I tried to set up a network stream I just could not connect and kept getting the 'not found' error. I used the httpwebrequest with webrequest.keepalive = true and started to consume the data by reading into a buffer and then appending to a stringbuilder. Once the stringbuilder reaches max size I flush it to a text file. The problem is that I get disconnected from the data stream because I am not reading the data fast enough. I need to keep the connection open and read the data while ensuring data gets stored in text files. If I use method "CONNECT" it does not connect to the stream.
While (True)
webrequest = DirectCast(Net.WebRequest.Create(url), HttpWebRequest)
webrequest.Credentials = New System.Net.NetworkCredential(username, password)
webrequest.Method = "GET"
[code]....
should I increase the buffer size and if so what is the max? that would mean I can read more data at a time and keep up with incoming push. Disparate here.
ACtually also I noticed that it gets stuck on this line
numbytesread = responseStream.Read(bufferread, 0, BUFFER_SIZE)
and then eventually I get disconnected.
Networkstream Connection Fails & Httpwebrequest Connection Not Reading Fast Enough
May 17, 2012I am connecting to a data stream that pushes data continuously and when I tried to set up a network stream I just could not connect and kept getting the 'not found' error. I used the httpwebrequest with webrequest.keepalive = true and started to consume the data by reading into a buffer and then appending to a stringbuilder. Once the stringbuilder reaches max size I flush it to a text file. The problem is that I get disconnected from the data stream because I am not reading the data fast enough. I need to keep the connection open and read the data while ensuring data gets stored in text files.If I use method "CONNECT" it does not connect to the stream.[code]
View 1 RepliesWinforms - .net Connection Entity Framework Connection String Security?
Sep 3, 2011I understand the possibilities for encrypting a connection string in .net v4. I have a win forms application that will be used by multiple people on different machines. I understand that I need to protect the connection string at time of the app being first run on the target machine. However I am concerned that for a period of time my connection string will be unencrypted. I am looking for advice in how to deploy my app with the connection string already encrypted or encrypted during installation. encrypting the connection string in a secure way?
View 1 Replies.net - Connection Was Not Closed Connection's Current State Is Open?
Dec 19, 2011Try If functionmode = "ADD" Then
[Code]...
Connection Was Not Closed Connection's Current State Is Open?
Jul 5, 2011I got this error..The connection was not closed. The connection's current state is open.
This is coding to add data in Ms access in vb...
Imports System.Data.OleDb Public Class Form1
[Code]...
Establish A Connection When The App Is Launched And Keep The Connection Open Until The App Is Closed?
May 20, 2010I'm developing a device app in VB.net that will access a SQL Server database. I need to establish a connection when the app is launched, and keep the connection open until the app is closed. I've done the following:In the Master Module:
Public CNN
As SqlConnection
In the Main menu form load:
CNN =
New SqlConnection(sqlConnString)
CNN.Open()
Then when I want to read from the database:
Dim sqlDR
As SqlDataReader
SQL = "SELECT Name FROM Table"
[code]....
When I run the same code without the global CNN, but rather dim the connection inside the Select function, all works well.
Invalid Connection String When Modifying Tableadapter Connection?
Jan 19, 2011I'm developing an app in vb.net (visual studio 2008). I have a Teradata back-end that will be supporting multiple users in a production environment. I need to use variables in the connection string as the user/pass will be changed every 3 months.
For the gist of the application:
In it's most basic form - I have a search form which works correctly - it pulls results into a listbox and the user then double clicks the list box which will then open a form that is bound via table adapter to the back-end table (Teradata). My connection string is fine everywhere in the application. My problem is using a modified connection string for the "fill" function of the table adapter once the form is opened.
I'm using the code below for the on-load event and keep getting an "invalid connection string" - again, the connection string works fine everywhere else in the app, and the variables etc... are working correctly.
Private Sub adaptertest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim DBConnStr As String = "Provider=TDOLEDB;Data Source=TDDEV;Persist Security
[Code].....
Mdb Connection - Transfer File Path In Our Connection String
Aug 26, 2009I'm facing a problem after installation any software setup that has a database in access(mdb file) How to I transfer file path in our connection string.
View 3 RepliesThe Connection Was Not Closed. The Connection's Current State Is Open
Mar 11, 2010I'm trying to insert a new records into database, one of those records is a "datetime"...when I type a wrong date, and try to insert those values into database, i get an error (about wrong typed date etc.)...ok, that's fine, things need to work that way. But here comes the problem, I correct the date, and then try to insert values again...here I get an error from the post title. And this doesn't work until I close that form and run it again...here's part of my code:
Dim cvLicence As New SQL
Try
cvLicence.upis("INSERT INTO blabla (itsnotimportant) VALUES ('something')")
MsgBox("everything's fine", MsgBoxStyle.Information)
[code]....
The Connection Was Not Closed..The Connection's Current State Is Open?
Jun 12, 2011Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
exitwithout()
[code].....
.net - What Is The Connection String For Oledb Connection To Connect DSN
Mar 18, 2012I am trying to connect DSN from my VB 2008 project. When i try using myoledb.connectionstring="DSN=myDNSname" I get the following error message An OLEDB provider was not specified in the connectionstring.
View 1 RepliesSql Connection Error - Re-establish Connection To The Server
May 14, 2010This will happen at random, and I can always just catch the error and re-establish connection to the server, but I am confused as to why. When doing lots of inserting into the sql server, I only establish one connection that is public, instead of many little connections. I had my doubts on a public sql connection, but it's been running great, and I've seen no problems until this morning. Again, this random moment I hit an error that stated, sql connection state is broken. Is it bad practice to just accept this error, and when it happens, re-establish the connection?
View 7 RepliesSends Data On A Networkstream Through A Tcp Connection - Error "An Established Connection Was Aborted By The Software In Your Host Machine"
Aug 18, 2009I have a program that sends some data on a networkstream through a tcp connection.
[Code]...