.NET Connection To SQL SERVER?

Jun 21, 2010

i started programming with .NET (i have express edition) and wanted to make a connection to an SQL Server..previously i had .net 2005 - i started having the issue there - i unistalled it, n installed visual studio 2008. I have installed SQL Compact that came with the .net 2008, and besides it SQL Server 2000.When I try to make a connection to the SQL Server, if server is running I have to stop it and then choose the DB i want to use. (if its running wont let me choose any DB). Then, when i select the DB i need, Im getting this error:

"The instruction CREATE FILE fount SO error 5 (failed to retrieve text for this error.Reason:15105) while trying to open or creating the fysichal file : -path- to northwnd_log.ldf. Cant open the new database -path to northwnd.mdf. CREATE DATABASE discarded.Error while trying to attach a DB automatically named for archive -path to northwnd.mdf. There already exists a database with the same name, cant open the specified file or it is in a shared UNC resourse.File activation error. File name -path to northwnd_log.ldf- might be wrong"And when i try to connect with the SQL compact edition that came installed with the visual studio, im getting this error:"Can not allow access to the file in DB [File name = path to northwind.sdf]"

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Sql Server - .net Program Dataadapter Connection Closes After Fill But Database Still Shows Connection?

Aug 19, 2010

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

[Code]...

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Sql Connection Error - Re-establish Connection To The Server

May 14, 2010

This 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?

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The SMTP Server Requires A Secure Connection Or The Client Was Not Authenticated. The Server Response Was 5.5.1 Authentication Required

Nov 28, 2009

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()

[code]....

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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?

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Connection To MS SQL Server 2005 Database (using Server.MapPath)

Feb 29, 2012

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.

[Code]...

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Import Excel Data Into SQL Server - ERROR: "ODBC --Connection To {SQL Server} Servernamesqlservername Failed"

Aug 13, 2010

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:

strFilePath = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fdlgFileOpen.FileName + ";Extended Properties=Excel 8.0"
connExcel = New OleDbConnection(strFilePath)
connExcel.Open()

[Code]...

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?

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.NET Closing Connection To SQL Server?

May 30, 2010

I have many Listviews in my Form and Im retrieving stored procedures to populates my Listviews. Is it necassary to close the connection to SQL Server once I have finished populating my Listviews?The angle which im coming from is that every 30 seconds or so I need to re-populate my Listviews with the latest cut of data from SQL Server therefor Im probably going to slow down my application if it has to connect to SQL Server every 30 seconds to get the latest cut of data... instead of keeping the connection to the SQL Server Stored Procedure live so that I can use some sort of method to refresh the data?

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.net Connection With SQL Server Express

Mar 14, 2012

why i'm getting the following error from the code below:

Error Type:
Active Server Pages, ASP 0221 (0x80004005)
The specified 'Import Namespace="System.Data.OleDb" ' option is unknown or invalid.
/default.asp, line 6

[Code].....

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.NET Connection, Server Can't Be Changed

Sep 18, 2011

I've been trying to make a login system for my application. Which seems to work, but when I try to connect to the database itself, it won't work. I used this code to check the exception:

Catch myex As MySqlException
MsgBox(myex.Message)

That gives this exception:

"Acces denied for user '[my db user]'@'[My IP-Address]' (Using Password: YES)"

The code I use for the connection is:

Dim Connection As New MySqlConnection("server=[The SERVER IP]; user id=[DATABASE USER]; password=[DB USER PW]; port=3306; database=[DB NAME]; pooling=false")
Connection.Open()
MsgBox("Connected")

As you can see, I've tried to change the 'server' part, but it won't affect anything. It will just say my ip address (localhost, I assume) in the exception. Telling me that it couldn't connect to it. Which is not even what I'm wanting to do.

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Can't Establish A Connection To SQL Server?

Nov 15, 2011

I'm using Visual Studio 2005 and SQL Server 2000 for my vb.net desktop application..I'm having a SQL Server exception saying that "connection can't be established to the server.hen connecting to SQL Server 2005 this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. Also showing

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Connection String For Sql Server ?

Apr 19, 2012

I have installed sql server 2005 in my machine which is installed vb.net 2008. I want my machine to distribute the database to the clients and make it as server.I don't have that much knowledge of how to overcome this issue as i am awfully naive about it.Let me start it here:I have got an application in vb.net...at first i was using ms access database 2007. then decided to switch on to the sql server since i want to distribute the database to the clients who are going to use my application.When i installed the sql server, i imported my access db files onto sql server database. i enabled tcp/ip as enable in the sql server network Configuration. i want use sql server windows authentication as my default user account of my system for the sake to simplify the issue.

Hence, i connected the sql server into the vb.net through the "add new data source".am done with that...the problem is how do i assign the connection string to the vb.net? Or how do i include a connection string in vb.net which tells every other computer that the database data source is in my computer so that every computer can automatically check it in the network.Where exactly shall i put the connection string...as far as my knowledge is concerned for access database, you can easily identify your connection string in project /properties/settings...it goes here and you put your database in any where.And what is the best connection string do i need for sql server 2005..computers are running windows xp.

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Feb 26, 2009

I making a connection through word 2003 VBA to SQL server 2005 using the following codeDim cn As ADODB.ConnectionSet cn = New Connectioncn.ConnectionString = "Provider=SQLNCLI;Server=LEXAE29150SQLEXPRESS;" & _"Database=MCarter.mdf;Integrated Security=SSPI;"cn.openetc.cn.close.All runs fine up to cn.open.I then get the message error 'Cannot open database "MC.dbf" request by the login. The Login failed'.Tryed websearching but no succes. Been on it a week and the boss is doing his nut. I'm lost and unsure what wrong.The SQL server is set for windows authenticity and SOL Server login.In the MC database under security users my user name (Login) is their and setup as owner and sysadmin.SQLServer is running on the same machine as the word.dot.

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Oct 6, 2011

I using vb.net 2010 and sql server management express 2008. bu I little confused what is wrong with the code for connect sql and vb.net

[Code]...

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Nov 26, 2008

how to use conection with vb.net 2005 and ms access and also sql server

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Aug 12, 2010

I am wondering if it is possible to perform some SQL command on a datatable. I currently have an application which reads in an excel spread sheet using the excel COM, and stores the data in a object array. The Object array is then used to create a datatable based on user specifications. I have added a number of checked list boxes which are populated with the column names and row number. The user can select what rows and columns that want to see, and the datatable is recreated to their needs and displayed in a datagridview.

Although at the moment the program is fairly simple in design, but I plan to add a bit to it. I am now wondering if you can use an SQL statement to extract a set of data from a pre-existing datatable. Most examples I have seen involve a connection to an SQL server,

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Remote Sql Server Connection?

Mar 20, 2012

I have SQL Server 2008 setup to remote connection. and it works perfect. I can access it from public IP address. [code]...

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Sql - Server Connection Overloads

Feb 26, 2012

I'm trying to run this code, but it displays the error "overload resolution failed".

[code...]

Here is the full error:[code...]

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Sql Server - SQL Connection Strings

Mar 19, 2012

I'm creating a program in VB.Net that heavily interacts with 2 large MSSQL databases. I do not know a ton of vb and I'm fairly new, but I would assume just having the connection strings in the code and releasing the program it would be quite easy for someone to reverse the program and get my connection info? correct me if I'm wrong. My question is I'm wondering if there is a safer way to use a connection string in my program. Would I just have to encrypt my app? Create a module or dll?

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SQL Server Connection Error

Apr 19, 2011

This is my connection string

"Data Source=192.168.1.2,1433;Network Library=DBMSSOCN;Initial Catalog=RFX2220;User ID=sa;Password=PhhassssWord!;"
this is the 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: TCP Provider, error: 0 - No connection could be made because the target machine actively refused it.)

(1) windows port enabled

(2) server configured for windows + sql server authentication

(3) & also enabled for TCP/IP

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SQL Server Connection Not Working

Jul 16, 2009

I'm not very good at deployment and I'm facing a problem: First Off, I'm using Vista. i have created a windows application in vb.net which has a database file named Customerdb.mdf in it. I have selected the database and in the property, I have selected Embedded Resource option. I have used the following connection:

[Code]...

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Store Sql Server Connection?

Mar 1, 2010

I am developing a database driven application and need to access the database often. What is the standard/best practice for storing the database connection. Do i need to create a public static variable? The main thing i was to avoid is passing the sqlconnection as a parameter in almost all of my function calls.

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Adding New Data Connection To SQL Server DB?

Apr 24, 2009

I'm trying to add a new data connection to a SQL Server database that lives out on my network. When I add the new connection I get the "Choose Data Source" dialog but it only contains the following:
Microsoft Access Database File
Microsoft SQL Server Database File
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Ado.net - Connection To MS SQL Server 2008 Database?

Aug 17, 2011

I am trying to connection to MS SQL SERVER 2008 database (students), i want to make sure:

1) If connection string that i made is OK

Dim connectionString As New SqlConnection("server=X86ONX64; database=students; Integrated Security=True")

2) How can i check if dataset is producing any results?

Code:

Public Class Form1
'Connection String + DataAdaptor + DataSet
'Declared Outside Any Subroutines/Functions

[Code].....

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Check The Connection Of Server Path?

Mar 23, 2009

I want to check the connection of server path eg[ URL] whether exists or notI tried this System.IO.Directory.Exists("http://localhost/MyProject/ ")but it always return false.So does anybody know how to check it?

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DB Connection Working On Local Not On Server

May 9, 2011

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]

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Jul 17, 2011

I want to create a global connection class from Sql server database to vb.net to make it easy in later editing the connection. Could anyone guide me the way to code both creating and calling to individual form?

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LAN To LAN Connection - Connect All The Computers In A Server

Jan 29, 2011

How can i connect all the computers in a server using vb.net 2005 or latest version of vb.net.?

Scenario: 10 computers in a computer room. connecting it to a server.

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Feb 15, 2012

have this program that uses OLEDB connection in order to import the excel sheet into datatable, now I am using windows xp and the server that I'm about to use would be in windows 7, what connection string do I need in order for me to connect to my excel file,

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Remote Sql Server Connection String?

Dec 3, 2011

I have configured Sql Server Express on a server, Enabling TCP/IP and Named Pipes to accept remote connections. However when i attempt to connect from VB.net on another PC on the same network I get the following Error: Failed to login user "ServerNameUser".

Can anyone offer some server setting and a ADO.NET Connection string. The attached file has the Sql Server Settings.Attached Files sqlRemoteConfig_Current.txt (806 Bytes, 70 views)

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