vb.net
'C:UsersPaulDocumentsNorthwind 2007.accdb 'db path
strConn = "Server = .;Database = NorthWind; Integrated Security = SSPI;"
i need to change strConn to connect to my local copy of the NorthWind database.[URL]..
Why doesn't an exception get thrown when this function is called when there is no ConnectionString set for the Connection? I just spent 15 minutes debugging and staring at it and finally figured out it needed the connection string. Shouldn't an exception get thrown?
Friend Function GetValues(ByVal TableName As String, ByVal FieldName As String) As DataTable
Dim cn As New SqlConnection
Dim cmd As New SqlCommand[code].....
In this situation, my application can connect to the MSSQL server in one of two ways; via a direct TCP/IP connection (WAN) (IP's filtered using RRAS in 2003 Server) or via a VPN connection. The application will first try to open the connection using the WAN connection string and if it can't, then it tries using the VPN connection string. My issue is, I set the connection timeout to 5 seconds for the first attempt but it's taking way longer than that to return an exception. The order in which I attempt to open the connection doesn't really matter. I have looked at the ConnectionTimeout property after changing the connection string and it does indeed show 5 seconds. It appears that the connection timeout value is being ignored.
View 6 RepliesI have a .udl file with the following connection string in it
[oledb]
; Everything after this line is an OLE DB initstring
Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial
Catalog=Client_DB050208;Data Source=IAEADBIAEADBDEV;;Network Library=dbmssocn
[Code]...
I have attached Database to my vb.net application. Client has sql server 2008 express installed.I built my application and gave to him. he is encountering errors.
PHP
"Data Source=.SQLExpress;Database=xx.mdf;Trusted_Connection=True;Integrated Security=False"
i am getting Cannot Open Database for requested Login. Login Failed. i am using SQL 2008 server Developer edition. And using Windows Authentication mode.
I 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]...
My application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application.
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I am trying to connect to a local SQL Server database and It is not working, the connection String is
Dim connString As String = "server=C:Program Files (x86)Microsoft SQL ServerMSSQL10.MSSQLSERVERMSSQLDATA;Integrated Security=SSPI;initial catalog=AdventureWorks"
sqlConn.ConnectionString = connString
sqlConn.Open()
I have a query that is working fine on my local but when placed on the server it comes back with this error,
Server Error in 'Page' Application.
ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. [Code]
How to disable local area connection in vb6 or vb9
View 2 RepliesI am trying to download a file from my VB.net application.
View 4 RepliesIn VB.Net, I'm trying to connect to WMI on my local computer with different credentials (the user won't have admin rights) and I get this exception : « User credentials cannot be used for local connections » Here's the code :
[Code]...
I'm trying to a open a connection to a local database and no matter what I try it just won't work (I'm pretty new to SQL Server and VB for that matter) I tried using 'sqlconnection' with different connection strings but none of them worked or gave me any useful error messages so I tried using 'OleDBConnection' instead, this hasn't worked either and it gives me this error instead:"A first chance exception of type 'System.NullReferenceException' occurred in MyProgram.exe"
Here is the code I am currently trying:
Private Sub MemDetailsSearch_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ConnectionString = ("Provider = Microsoft.Jet.OLEDB.4.0;" & "Data Source = Database.sdf")
DataConnect = New OleDbConnection(ConnectionString)
[code]....
I've been looking over a bunch of code snippets and I'm just not understanding what is going on there.anding the connection, reading/manipulation, and closing pI keep reading all about these DataAdapters, Ole and Sql and Sqlce and I don't know which to use or whatever.I made a database in VB.NET 2010 that came out as database.sdf and I selected the Local Database option (I assume this is relevant?). I then populated the database with a row of data with column titles and a primary key. The table contains many different columns, but for test purposes, the following is relevant:
DB Name: db_test
Table Name: Locations
Primary Key Column Header: CITY
[code].....
Error thrown. "Object not set to an instance..." at line where you see **.
[Code]...
I have finished my program and now i am ready to deploy it. The only problem is it is a multi-user application. All i want to do is simply run the program with the database from a server, and have other local computers with the program access this same database. I know that you have to change the connection strings for the local computers, but how can i go along doing this?
View 2 RepliesQuestion for all of the more experienced programmers out there. I am working on a program with a tab control. One tab will hold a webbrowser control within it. What I am trying to accomplish to have it pull a specific url from my website to the webbrowser control if the person is connected to the internet, BUT if they don't have a internet connection at the time, I would like to display a local html file instead
View 4 Repliesheres the script basically it sets (supposed to) Local area connection ipv4 static ip address to 10.XX.XX.2 but it dosent work it works fine if you run cmd as addy and put the script in netsh interface ip set address "Local Area Connection" static 10.XX.XX.2
Dim txtlen As Integer = Len(TextBox2.Text)
Dim IPAddy As String = ""
Dim asciiSplit(4) As Char
[CODE]...
Any ideas on how I handle the following error thrown in the SqlDataAdapter.Fill as a result of the BeginTrans in the callee?
System.InvalidOperationException = {"ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.The Transaction property of the command has not been initialized."}
[code].....
Public Sub ExecuteTransaction(ByVal connectionString As String) Using connection As New OleDbConnection(connectionString)
Dim command
As New OleDbCommand()
Dim transaction
As OleDbTransaction
[Code]...
I've got a code using SQLClient that loops though all users in a Users table inside each loop i want to preform another search in the UserOrders table, thus doing a count of all orders.
I get this error
HTML
There is already an open DataReader associated with this Command which must be closed first.
Here is my code
vb.net UserLists.Items.Clear()
Dim connection As New SqlClient.SqlConnection(My.Settings.ConnectString)
Dim command As New SqlClient.SqlCommand("SELECT * FROM Users ORDER BY PersonName",
[CODE]...
I 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]....
I am getting an error message: "Pervasive.data.sqlclient.v is not accessible in this context because it is 'friend.'" This error message appears when I hover the cursor over the "For Each v In qv" line in the following code:
[Code]...
I am trying to connect sql server 2008 in visual express 2008. at connection() line i am getting error. name connection not declared. anyone can one tell me what may be the reason for that error.
my
#Region "Statments"
Imports System
Imports System.Collections.Generic
[Code]....
Does anyone know how this can be done? The problem is that when you run the script to add a domain user to the local group as a local user you have no permissions to query the domain. Is there a way to pass a user name and password when doing this? [code]...
View 3 RepliesProtected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;
[code].....
I am experiementing with table updates and the code below gives me the following error message: "The variable named "@Processed" has already been declared... at the following code line: clsWTAdapter.Update("clsWTDataTable"). I fear that all of my code is a general mess, and I am sure there is a much better way to go about it.
Dim clsCmd As New SqlClient.SqlCommand
Dim clsCMAdapter = New SqlClient.SqlDataAdapter("SELECT * FROM CatalogMaster WHERE Processed <>-1", clsCnn)
Dim clsCMDataTable = New DataTable("CatalogMaster")
[code]....
I want to upgrade from OleDb to SqlCLient, I mean from .mdb file to .sdf file.I have installed MS SQL Server 2008 Express Compact edition and designed my database files and created tables/fields and now gonna copy it to my application directory so my application will work with that on TARGET systems, WITHOUT having SQL Server installed on target systems...Well, my old connection string as follows:
Code:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "CompanyNameProductNameDatabase.mdb;Jet OLEDB:Database Password = secret"
[code]....
im having some problems using the data adapter. i tried a statement select 1'test' but when i do adapter.Fill(dataset, "tbl1") and tried to read the value from the first row in tbl1.hen i do row(0) i can retrieve the value. However if i do it by the name like sayrow("test") and i would get a dbnull.
View 9 RepliesThis is frustrating, I am just trying to get the system to open a database and I get this error:
A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
here's the entire code of the main form
[code].....
