VS 2008 Connection To Sql Server Failed (server/'localhost' Not Accessible)
Aug 18, 2009
I have simple code that connects to Sql database... (well it doesn't)
VB
Dim objConn As New SqlConnection("Server=localhost;uid=***;pwd=***;database=***")
objConn.Open()
ERROR MESSAGE:A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)But looks like something is wrong with "localhost" thing. Any help? Where can I get name of (my) server?
Dim conn As New SqlConnection("Server=.SQLExpress;Data Source=;Integrated Security=SSPI") Dim cmd As New SqlCommand("", conn) cmd.CommandText = "CREATE DATABASE MyDBTest22 ON ( FILENAME = 'D:dbTestATTTTTTT.mdf' ), ( FILENAME = 'D:dbTestATTTTTTT_log.ldf' ) FOR ATTACH"
[code]....
It ran without any error but when I opened SSMS, I could not see my file attached to the server. Also, I tried to make a connection, but it says file does not exist but when I tried to re-run the above code, it says File already exists.Something wrong with my way of doing it? I want to see it attached with the instance of my SQL Server Express 2005, using SSMS.
I am trying to do something fairly simple.. allow my user to import thier data from Excel into SQL Server, where it can be used by the application.To do this, I'm using the fairly simple code that is common everywhere I look:
Now, on my development computer this code works perfectly. The data imports, and I can go on my merry way.
On the TEST computer, this code throws the error: "ODBC -- Connection to {SQL Server} servernamesqlservername failed." This seems very odd to me, because I'm using exactly the same SQL Server and database to interact with the application, and all the other screens in the application work perfectly. The test computer CAN connect to this SQL Server, but it keeps throwing this error whenever I try import data from Excel.I've tried everything I can think of - using the server's IP address instead of the server name, sending the SQL Server administrator data along with the request, taking out the Trusted_Connection=Yes... nothing works. What is going on here? How can this code work fine on my computer, and hiccup on another?
I've made a WCF server and tested and debugged it only on localhost so far. I wanted to measure its LAN speed and couldn't get it to work. The client returned a EndPointNotFoundException. Below are the configurations I use on the client and server.[code]
I'm interested in creating a simple localhost server that can serve dynamically generated data from a ListView into a formatted web page. I'd also like to "control" or otherwise have the program execute functions based on what links are clicked.I've been searching for solutions and it looks like it would be a fairly simple task but I'm not sure exactly what the best way to go about this would be.
I have the MySQL connector dll for .net, but am having problems.
1) When I go to phpmyadmin on cpanel, it says the server is localhost. I am confused by which IP i am supposed to use to connect, as im pretty sure just localhost will not work.
2) When connected, can i use credidentials from an account already made to access the database, or do i need to use the admin credidentials?
What happen if i want connect to a database server is not my computer local host, is another computer localhost in LAN network? how it works? [code] how about i wan connect the server is another computer localhost database?
Dim sqlConn As New SqlConnection("Server=.\SQLEXPRESS;uid=;pwd=;database=ContactManager") sqlConn.Open()
Above is my connection string, The programs runs up until sqlConn.Open() and then i get the same error, using no UID and Pass, or using a uid and pass.
Login Failed For User ''. The user is not associated with a trusted sql server connection
I have the SQL Servers authentication se to Windows Authentication and SQL Authentication. I'm using Visual Studio 2005 and SQL Server 2005.
I have an application which connects to a database, retrieves a username from a user's table and matches it against the username retrieved with System.Security.Principal.WindowsIdentity.GetCurrent.Name.On my localhost, everything works fine. The database exists on the development server but the application lies on my localhost. All of my authorization and authentication techniques are running smoothly.However, when I publish my application to the development server, I'm faced with the following error.Cannot open database requested in login 'databaseName'. Login fails.Login failed for user 'DevelopmentServerNameASPNET'.
This emailing code wont seem to work in my program. I get an exception "The SMTP server requires a secure connection or the client was not authenticated. The server response was 5.5.1 authentication required."
Imports System.Net.Mail Public Class emailStudent Private Sub sendEmailButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sendEmailButton.Click SendMail()
I'm currently upgrading my sql server from 2005 to 2008 enterprise server. I used VB to connect to the database. It worked fine in the previous version of sql, but when upgrading it seems doesn't recognize my connection string.
Below is my connection string:
myConnection = New SqlConnection("server=RAVY-PCRAVY;uid=;pwd=;database=CIEDC"); myConnection.Open();
Where Ravy-PCRAVY is my server name at the sql server login dialogue box. And I used the windows authentication mode.
I am tring to make the below application work with SQL Server 2005 Database Currently it works for test.mdb, which is in the same folder with the application. How shoud I modify the MapPath to work with SQL Server.
I've created a Http Server in VB.net.I've used the same "template", I guess you could say, for every project requiring an Http Server (quite a few recently).The problem is, this one I'm working with now requires that the computers on the LAN be able to connect to it. I can access the server directly from my computer though using: [code]Now I get an error every time when it tries to apply the prefixes: I've checked all the ports that are listening and 8002 is still open...
My application is VB.net 2008 with sql server 2008 , the application is working on the server . whereas in the client i got the error which i attached below Error" A Network - Related or instance - specific error occurred while establishing a connection to sql server. The server was not found or was not accessible.Verify that instance name is correct and that sql server is configured to allow remote connection"
I'm trying to make a connection to SQL Server 2008 express Using this code
Dim Ordr As String = "Select * from Orders" Dim con As SqlConnection = New SqlConnection("Data Source=localhost;Integrated Security=SSPI;" & _ "Initial Catalog=Orders") Dim com As New SqlCommand(Orders, con)
[code]....
I get this error:A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server
I created a vb form application that I want to query a SQL Server database that is hosted through godaddy. Below I have my function that calls the db and also my connection string in my app.config file. When it tries to open the connection I get the following: {"A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)"}. Do I have to set something on the godaddy end to allow a connection? Or can I only access the database from a web page on my site? [Code]
I have herd that a new type (or old type) of connection when the server connects to the client. Is it really possible to do such a thing with mulit-Servers trying to connect to one client.How would I make one like that O.o.
After 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
I cannot connect to my local sql server using the following line [Code]. I get login failed for user tedpottel. I have security set to window authority i believed, so my other programs (reporting services and cold fusion do not take in a password. (as long as I log in as tedpottel) So I tried conn = SqlConnection("server=(local);database=by") which said failed for user''.
Error message receiving A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) The project is written in VB.Net 2008. Production server uses SQL 2008, Dev Server uses SQL 2000. The application has been built and published.
Dev Connection String: strCN = "server=S04423711940995.;Initial Catalog=APO_Tax;Integrated Security=True"
The Problem: When I change the connect string from dev back to prod and try to run my app, I get the above error message. If I reboot everything works fine but if I switch the connect string from prod to dev and try to go back to prod, I'm back to the same problem.
The above codes runs inside a loop. The above code runs quite well without any issues. But once or twice a month, I get the following error message and application stops. System.Runtime.InteropServices.COMException (0x80040213): The transport failed to connect to the server.
I'm changing old, vulnerable SqlCommands with SqlParameters but get a SqlException: System.Data.SqlClient.SqlException {"Conversion failed when converting datetime from character string."}
on sqlCommand.ExecuteScalar: Dim sqlString As String = _ "SELECT TOP 1 " & _ "fiSL " & _ "FROM " & _
i'm tying to send email in my application directly by the smtp server but the server doesn't allow me to do that.The application its used by everyone in the company, so i set the smtp client UseDefaultCredentials to True, but the server replies with this when i try to send an email:[code].....If i set the credentials by hand, the server sends the email. So my problem is how to make this work to everyone? I don't want to have one public/friend var all time in the application with the credentials of the current user?
I have developed a VB.NET program using a strongly typed dataset. This dataset has its connection to a SQL Server 2008 R2. The software should now be additionally used offline. The database should be exported to a *.sdf database. If no connection to the SQL server is produced, the software have to try to connect to the *.sdf database.I would like to achieve:
1. Export the data in the SQL Server 2008 R2 database to a local *.sdf file.
2. This *.sdf file has to work as an alternate connection string in the strongly typed dataset.
