Setting Up An Ethernet Connection Using .net?
Aug 6, 2009setting up a Ethernet connection using vb.net...
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Setting Up A Connection To The DB?
Jul 16, 2009I'm having trouble setting up a connection to the DB.... When I go into VS 2008 on the left hand side (Server Explorer), I right click on the "Data Connections" option and select Add Connection and get the following error:
"The Microsoft.VisualStudio.Data.Interop.IVsDataProviderManager service could not be found."
Setting The Database Connection When Using A TransactionScope?
Apr 26, 2010Does the database connection have to be set inside a TransactionScope?
Or can I set it in the ctor and then have instance methods create up a TransactionScope?
EDIT: e.g.
Public Sub New()
Dim conn = new SqlConnection(...connection string)
Public Sub SomeClassMethod()
[Code].....
the question is do you need to create the connection to the database after you've created a TransactionScope or can it be done before?
Setting MySQL Connection To Remote Server?
Aug 7, 2010I Downloaded MySQL Connector (the latest, 6.1.X), and i cant really understand how to use it in VB.Net... I Added it to references. All what I need to know is what imports to use, how to set connection with remote server and how do I select and insert to tables.
View 6 RepliesSetting Up Client/server Connection!THesis?
Mar 11, 2010I am a newbie in VB.NET I am using Sql Server Express 2005 as my database.I am currently working with my THESIS. A Human Reources Information System that concerns only with the file and record management of the employees. With two modules.a. Administrator for HR Manager (w/ installed vb.net and sqlserver express 2005)b. Staff for HR Clerk(w/ intalled vb.net)
Here is my problems:
1. I want to learn how to connect my vb.net application in each other using TCP/IP or any network connection tips.Scenario: If the client Save/Edit/Delete/ a record automatically it will saves on the admin sql database.
[Code]...
Read The Ethernet Port By Using VB?
Jun 25, 2009I want to read the ethernet port by using visual basic. It would be great if anyone can guide me for this.
View 5 RepliesApplication Setting - Switch Main Server And Backup Connection String With Combobox
Mar 5, 2011I have a little problem with application setting in VB.net 2008. I want to switch main server and backup server connection string with combobox. [Code] It did change the Application Setting connection string in the main form when combobox1 was changed. But the problem comes, when child form was called. On the child form there is DataGridView with Dataset using application connection string. Even the Backupserver was selected on the main form, child form dataset connection string doesn't change. I don't know how to pass the current connection string to child form dataset although it is set to use application setting.
View 6 RepliesCode To Autodiscovery PCs On An Ethernet Subnet?
Jan 6, 2011I am working on an application that collects data from PCs on the network using WMI queries. Is there any sample code that knowing the subnet would autodiscover PCs nearby?
View 4 RepliesReading Ethernet Port Pins
Jun 10, 2011[code]Through these ports I have been able to connect simple press-button triggers (or switches) and programatically "read" them. i.e. tell when they are open or closed, grounded to earth or not.With modern PCs I am now somewhat limited. I can still use the MIC port and USB port (when connected to a USB/Serial cable) but since WiFi, my ethernet port is now "available". If you've read this far, you already know my question. How can I "read" the ethernet port pins. I realize that perhaps not all the pins may be simply read, but perhaps one or two at least.
View 1 RepliesReading The Ethernet Port Pins?
Sep 26, 2009In the past I have been able to simply read the physical pinouts on the:
Games Port (DB15) (using PEEKS and POKES)
Parallel Port (DB25) (also using PEEK and POKES(888))
[code]....
Through these ports I have been able to connect simple press-button triggers (or switches) and programatically "read" them. i.e. tell when they are open or closed, grounded to earth or not.With modern PCs I am now somewhat limited. I can still use the MIC port and USB port (when connected to a USB/Serial cable) but since WiFi, my ethernet port is now "available".|||||||| (8 pins).If you've read this far, you already know my question. How can I "read" the ethernet port pins. I realize that perhaps not all the pins may be simply read, but perhaps one or two at least.
Write Directly To Ethernet Port?
Feb 7, 2011I am writing an app that does part of what another app does (I have no access to the source for the other app other than to see Wireshark output.)
I need to send a broadcast over the LAN and then parse the results. However, the sending of the broadcast seems to be code that is direct to the LAN connection, as in it doesn't seem to write to a standard IP/port combo.
I see apps like Raw Ether that do this at a cost of hundreds of dollars.
Is there some way to not have to buy 3rd party stuff to do this in VS2011 w/ VB.net?
Dial Phone From Remote Computer Over Ethernet?
Apr 15, 2009I have a remote computer on Cable Internet. Im needing to dial a phone number which is on a Avaya VoIP network. Is there any way to do this in vb.net? Ive noticed alot of stuff using modems and AT commands but thats not what Im really looking for.
View 4 RepliesRead File From Another Computer Through Ethernet Cable?
Oct 9, 2009i would like to ask is there a method which i can read a specific file from another computer??i would like to use IP address to specify the address.
View 21 RepliesVS 2010 Virtually Replug Ethernet Cable?
May 21, 2012i want to make a little program that virtually REplugs my internet cable.
View 1 RepliesSetting Short Function By Setting Poker Game Points?
Aug 23, 2010I need help and wondering if you can help me to get my first project...it's a hobby and wondering if you can get me code for this so i can see how it does it* Evaluate( ) Prints the evaluation of the hand to the evaluation Label.
o If IsFlush( ), prints "flush; "
o calls SetPipArray( )
o Uses a For Loop to go through pipArray. For each element, uses a Select Case statement to
[code]....
Setting Variables To Store User Setting For Applications
Feb 13, 2012In our projects we use setting variables to store user setting for the applications. Moreover, with every latest version of the applications, we upgrade these variables to retain user settings.Normally, this works fine, but recently one of my end user reported an error i.e.Configuration System failed to initialize". The error is related to user.config file. Therefore we requested the user to send us his file.After received the folder, we noticed that it contains 3 files (3begfjb.newcfg,3begfjb.tmp and user. config). 3begfjb.tmp is an empty file, while 3begfjb.newcfg and user.config are identical files. We tried to open these files but the data in user.config isn't proper xml rather its unreadable formatted file.Do any you guys had experienced this sort of issue or any ideas how and what may have created these files and corrupted user.config file.
View 3 RepliesAssign 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].....