Connect To SQL Server From ASP.Net Application
Jul 12, 2006
Hi
I developped an ASP.Net application (with Web Dev Express ) wich attempt to connect to SQL Server Express (installed in the local machine) using Windows authentication.When i launch my application within Web Dev or from IE navigator i receive the following error message : Cannot open the database 'MyDB' login failed for user ServerNameASPNet.I use SQL Server Management Studio Express to give the user ServerNameAspNet permission to connet to the database but i still receive the same error message.I created a user with strong password within Management Studio with connect permission and attempt to connect from my application using SQL Server authentication i receive the error message : The user 'UserName' is not associated with a trusted connection for SQL Server.Note that when i use the Connect to Database tool in Visual web dev the connection success when i use Windows authentication but fails when i use SQL Server authentication with the same error message above.My OS is WXP Pro SP2
Thanks for any help
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Jun 28, 2007
I am having a strange problem. I have an application that to connects to SQL Database in SQL Server 2005.
When I run the application with Visual Studio everything works fine but when I deploy the application on my web server and then to access the site .
I get an error : Login failed for user ''. The user is not associated with a trusted SQL Server connection.
For some reason the application is not passing the user name . I have checked the IIS and authentication is set to Integrated Windows Authentication .
My connection string is correct as well
<add name="xxxxx" connectionString="Data Source=xxxxxx;Initial Catalog=xxxx;Integrated Security=SSPI" providerName="System.Data.SqlClient"/>
I will appreciate any kind of assistance in this matter. Thanks
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Apr 30, 2005
Hi!I am going to connect to "SQL Server 2000" through an "ASP.NET Web Application". My development environment is "Visual Studio .NET 2003". In my "Toolbox" -> "Data", I drag a "SqlConnection" and drop on the page. It would automatically be named "SqlConnection1". In its "Properties" -> "ConnectionString" -> "<New Connection...>", I would enter my Server Name (SAMIEI), select "Use Windows NT Integrated Security" and Select the Database on the Server (Northwind). Then such Connection String would automatically be generated:
"workstation id=SAMIEI;packet size=4096;integrated security=SSPI;data source=SAMIEI;persist security info=False;initial catalog=Northwind"
Now, I may see "SAMIEI.Northwind.dbo" in the "Data Connections" row of "Server Explorer" with its all "Database Diagrams", "Tables", "Views", "Stored Procedures" and "Functions".Please take a look at the following code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try SqlConnection1.Open() Catch ex As SqlException Response.Write(ex.Message) End Try
End Sub
It would unexceptedly encounter such error:
"Login failed for user 'NT AUTHORITYNETWORK SERVICE'"
Please tell me the reason. I am much obliged to you for your attention.
Regards!M.Sadegh Samiei
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Apr 3, 2006
Hi
I can't connect to sql server 2005 from my asp.net web page. I seem to be able to connect to it when i run the application from within visual studio but i can't connect to it when i run the application from IIS.I am new to sql server 2005 express so please bear with me.The error message i get is: Cannot open database "Vets" requested by the login. The login failed.Login failed for user 'OSCAR2K4ASPNET'.I don't know where this user OSCAR2K4ASPNET came from but i looked in sql server 2005 and there he is. In the left hand pane I went to Security and then logins and found oscar2k4asp.net there. I went to the properties for this user and went to User Mappings. There was no tick next to my Vets database so I added one and ran the application from IIS. I also added the user to every single role in the vets database (including dbowner). I also went into the vets database itself and found the oscar/aspnet user and made sure he was added to every role.
I ran the application again. This time i got a lots of different errors. If the page was trying to run a select procedure I got the error user does not have select permission. If the page was running an SP i got the error or user does not execute permission
I have never had this problem before so I don't understand.Where did this user come from? Was he created automatically when i configured my database for membership and roles? How do i set up this user so he can access the databsae from IIS.
The only way I could get the application to run from IIS was to go to Security - Logins for sql server and add the oscar2k4asp.net user to the sysadmin role.
I find this very strange. Naturally i don't want to leave oscar2k4 in sysadmin.
Please help :) I can't upload my website until i fix this
Thanks, andrea
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Aug 2, 2014
in create a new software application using C# as front end and database with sql. how to connect SQL server with my front end application.dot net training in chennai <a href="http://www.fita.in/dot-net-training-in-chennai/">Dot Net Training in Chennai</a>
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Dec 12, 2006
All,
I'm a newbie here so forgive me if I have missed something completely obvious.
I have bought a shopping cart script of a well known company (Evolve Merchant 5) and I wish to set it up locally on my development server, I created a virtual directory, set the web application up and get the asp pages to display perfectly. However, in the configuration file (global.asa & web.config) for the application it reguests information to be provided: <add key="DBName" value="Database name" />
<add key="DBServer" value="IP address of server" />
<add key="DBUserName" value="User name" />
<add key="DBPassword" value="password" />
<add key="AltPassword" value="password" />
What I can't determine is what the SQL Server 2005's IP address is? the pages of this application show when I type http://localhost/catalogue into IE, so I presumed the server address would be the IP of localhost, when typed ping localhost into command promt it gives me 127.0.0.1, but when I enter this into the config file and try to load the application it just hangs and then eventually says:
"Microsoft OLE DB Provider for ODBC Drivers (0x80004005)[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied./catalogue/global.asa, line 54"
I have created a new database in SQL Express called: merchant509 and restored the tables to it as the manufactures help files state, I created a new login called shop which uses SQl authentication, so as I can provide a password. So the settings should look like this:
<add key="DBName" value="Database name" />
<add key="DBServer" value="127.0.0.1" />
<add key="DBUserName" value="shop" />
<add key="DBPassword" value="1684" />
<add key="AltPassword" value="1684" />
But it doesn't work, does anyone know what i have done wrong?? the SQL server is runnign on the same computer as I am trying to access it from, it is set to accept all forms of comunication i.e. TCP/IP etc.. in the server configuration manager the IP address part of TCP/IP in protocols shows IP1 as 192.168.2.2 active yes enabled yes, and IP2 as 127.0.0.1 active yes and enables yes, I have tried the 192.168.2.2 and this gives the same errors, this is my registed IP on my home network.
I'm now stumped, I haven't a clue what else I can try, I would be very greatfull if anyone has any ideas.
Regards,
Daniel Coates
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Jan 3, 2007
Hi,
We recently installed Sql 2005 server and it was working fine. But today one of our user reported that they could not able to connect the sql server 2005 from the application. When I checked the error log, I found the following error for every one minute. We restarted the sql service on this sql 2005 instance but still we are getting the same error.
SSPI handshake failed with error code 0x80090311 while establishing a connection with integrated security; the connection has been closed.
Could any one help us on that?
Regards,
Sankar
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May 9, 2007
OK, I am not a programmer, but administrate the Report Server and its security. The .NET programmers want to connect direct to Report Server using WEB.CONFIG settings (see below).
<appSettings>
<add key="ConnectionString" value="Server=bpatlqddwatlqddw01;Database=MP2_NET_STAGE;Integrated Security=False;User ID=MP2_Net;Password=xxxxx;Persist Security Info=false"/>
<add key="LogPath" value="\bpga030wde01wwwroot$MP2_NetLogs"/>
<add key="Url" value="http://bpga030wde01/MP2_Net/" />
What do I need to do to ensure their dynamic reports can run against my Report Server? What kind of rights do I assign the "MP2_Net" (above) login? All of this is outside the IIS-Report Server security environment? Do I assign rights via SQL Mgr? I cannot find any doco on this process.
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Apr 3, 2008
Hi,
I am having a problem connecting my .net applications from the application server to the database server. When I run the application from my windows xp (sp2) box it works fine. When I try to connect via SQL Management Studio to the database server from the application server I get the same error.
Here is the error:
System.Data.SqlClient.SqlException: An error has occurred while establishing a connection to the server. When 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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Here is the Environment:
App Server:
Windows Server 2003 Standard Edition
Inside Company's Firewall/ Network
Database Server:
Windows Server 2000 Advanced Edition
SQL Server 2000 SP4
Remote Connections to the Server is checked
Enable Protocols: Named Pipes & TCP/IP
TCP/IP Port: 1402 (I don't know why it isn't the default of 1433)
The db server is sitting out side the Company's firewall (don't ask me why). I can access it fine from inside the firewall on my XP box but not from windows server 2003. There is a web server outside the our network that also connects to the db server with no problem and that is running Windows Server 2003 Web Edition.
I can ping the db server from the app server using the IP address.
I tried using the IP address and the port 1402 in my connection string but that didn't work from any machine (XP and Server).
I imagine the issue is somehow related to the company's firewall but why would it only block Windows Server 2003 and not XP?
What do I tell the network admin to change?
Any help would be appreciated.
Thanks,
Oran
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May 20, 2004
How to connect to SQL server database from Oracle 9ias Application Server (9.0.3) & Test & Verify the Connection. Is it posible.
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May 1, 2008
Hello, we have the hosting account with GoDaddy Server. We have using Visualstudio.net and MSSSQL Server 2005.
For hosting the files for the remote server ( Godaddy ) we are using FTP Cute client to upload the files. For Uploading a database they given a seperate login and we are hosted my data as a Transact SQL File. Up to this its going fine.
After that I want to retrieve my data from GoDaddy Database server. They are not allow the remote connections directly. But they told to use the File DSN to retrieve the data from thier server ( GoDaddy Server ). I don't Know how to use thier File DSN to connect My ASP.Net 2.0 Application to thier GoDaddy Database Server.
If I asked to GoDaddy Support team they are sending this file.
Connecting to a Microsoft SQL Server Database Using ASP/ADO
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Feb 1, 2008
I have problem connecting to a SQL 2000 server that is hosted on a Windows 2003 server. My application uses classic ASP with VB6 components. VB6 components connect to SQL server and return data to ASP application. Everything was working fine when the application and SQL server was hosted on NT machine. Recently we have shifted to Windows 2003 server. Since then we could not establish connection to SQL2000.
I'm using UDL as connection string.
IIS and SQL2000 hosted on the same machine with Windows 2003 OS.
This seems to be a security issue. Earlier I faced this issue for a .net application which I resloved adding a domain account to both SQL server and IIS directory security.
Request your input to solve this problem.
Sunandajit Ray
Infrasoft Technologies Limited
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Jan 13, 2007
Here is the situation:
I have SQL server express 2005 installed on my pc as instance SQLEXPRESS.
I have created a Visual Basic applicaion with the following as connection to the SQL server express 2005 running on the same PC:
****************************************************************************************************
Dim lconnectionString As String Dim builder As New SqlConnectionStringBuilder Dim cmd As New SqlCommand Dim reader As SqlDataReader Dim parameter As SqlParameter builder("Data Source") = ".SQLEXPRESS" builder("Initial Catalog") = "" builder("AttachDbFilename") = "C:My DocumentsVisual Studio 2005Projectsabcabcabc.mdf" builder("Integrated Security") = True builder("User Instance") = True lconnectionString = builder.ConnectionString Dim sqlConnection1 As New SqlConnection(lconnectionString) cmd.CommandText = "SP_add_collection" cmd.CommandType = CommandType.StoredProcedure cmd.Connection = sqlConnection1 sqlConnection1.Open()
*******************************************************************************************************************
It seems that i can not connect to the abc.mdf in SSMSE while the VB program is running. (ERROR:
Database 'C:My DocumentsVisual Studio 2005Projectsabcabcabc.mdf' cannot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details. (.Net SqlClient Data Provider) )
If i connect to the abc.mdf first in SSMSE, then run the VB program afterwards, it gives me the error on this line -- sqlConnection1.Open()
I want to be able to access the abc.mdf database with both SSMSE and VB at the same time. Could anyone help me on this ?
Thanks very much !
apple
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Oct 21, 2004
Hello,
For my application, I need to consult a database located on a server on the local network. The application is located on my pc. I use the connection string
Code:
"Integrated Security = SSPI;database=dbName;data source=serverName"
(I program in C# and connect with ADO.NET)
When I compile my project as a windows application, this works fine. But when I compile as a web application in ASP.NET and try the same connection, it won't connect. How can this be solved?
Thanks
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Jul 1, 2005
Hey everyone, I'm having trouble connecting to my sql express instance through my vb.net application. I can connect to it from Visual Studio and the management tools, but get an error when connection with a connection string. What should my connection string look like? I'm using the a default SQLEXPRESS instance.
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May 7, 2002
Hi guys.
We have an external webserver(server1 on domain1) is a DMZ, and sql server7(server2 on domain2) inside the firewall.
Domain1 trusts domain2 but domain2 does not trust domain1.
Our firewall hosting by outside vendor and they told me they already opened up the port 1433 for server2.
I put a small asp.net application on server1(this application works fine in intranet. 2000 server,iis5,virtue directory, and .net frameword were well installed and configured), and I got S'QL server does not exist or login fail error'.
Any idea about that? And how to test the port was opened?
Any input appreciated.....
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Aug 3, 2006
I added a database named appdata to the app_data folder to hold temporary application data. I want to show this data in a report. I created a dataset and an object to select the data. I then created an report.fdlc and a report.aspx with a ReportViewer on it pointing to the dataset object. If I right click on the report.aspx and View in Browser, it work perfectly. But when I upload it to the server I get and browse to it I get (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified). The server does allow remote connections. So I am thinking it's my connection string of the fact that the server doesn't have Sql Server Express.?
Here's my connection string. What am I missing here?
<add name="appdataConnectionString"
connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|appdata.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
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Mar 13, 2008
I have to search the keyword from windows application using dtSearch. when user enter the list of keywords in UI, i have to connect to dtSearch tool and based on the output return, the matched keyword should be added to database table.
Now, i have problem in connecting this tool from my application.
Thanks in advance.
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Apr 10, 2008
Hi,
Any one tell me the code to connect to .sdf file in c# windows application?And tell the requirments to conncet.My sdf file path is this
C:\Documents and Settings\koti\My Documents\Example.sdf
I write this code.It is not working
string str = "Provider=Microsoft.SQLSERVER.MOBILE.OLEDB.3.0;Data Source=C:\Documents and Settings\koti\My Documents\Example.sdf;SSCE:Encrypt Database=True";
SqlCeConnection cn = new SqlCeConnection(str);
cn.Open();
Ant one help me Plz...
Regards,
venkat.
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Aug 14, 2015
After manual AG fail-over from primary to secondary the application is not able to connect the listener name for atleast for 5 - 10 mins
The telnet fails during this time from app server, the listener ip is on muti-subnet.
At the same when i try to connect it from SSMS from a remote machine it works fine.
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Aug 25, 2007
Hi all,
I'm working on a project where I have to create a password protected form for teachers to submit reports about students.
Originally I was going to use asp.net to create the form, but unfortunately the server I'm working with will not be granted asp functionality in the allotted timeframe.
To solve this issue I have another idea. So I will ask a few questions to help with research before I begin coding.
Is it possible to create a windows application that can connect to an access database hosted online? The windows app will need to be be able to update, insert, and select information from the database.
There is only going to be about 30-40 people using this windows application once or twice a week.
Thus I envision taking a password protected access database and dropping it onto a server.
The windows application will have the online location of the database embeded into the code. (connection string)
From there on out coding for the windows application should be the exact same as if the database was hosted locally on the computer, correct?
Also,
1. What is a good way to check and make sure the computer is connected to the internet before my application tries to access the database?
2. Are there any drastic security issues with this process that I should think about. The database will only be password proected, and the windows application will take a username/password from the user and check it against a table before they are able to submit info to the database.
I just need to be pointed in the right direction for this project.
Thanks.
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Oct 31, 2007
How to Connect sqlServer 2000 in Pocket PC 2003 Application.
In Packet PC 2003 Application I have to connect to sql server 2000 on
my machine. The application gives error if connected using sqlConnection. Is SQL server CE necessary to connect to sql server 2000 in .Net Compact Framework?
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Dec 12, 2006
I'm having a problem connecting with a Java application but I CAN connect using my .Net application - the user name and password are the same for both (using the same database on SQL Server Express 2005).
The error I get is: "com.microsoft.sqlserver.jdbc.SQLServerException: Cannot open database "CORNERS" requested by the login. The login failed." An interesing note - I get the same message if the database is not running.
SQL Server Express 2005 is installed in mixed mode.
Here is my connection string in the .Net appplication: <add key="connectString" value="Server=(local);UID=sa;PWD=myPasswd;Database=CORNERS" />.
These are my values in my Java app web.xml -
<init-param>
<param-name>DBDriver</param-name>
<param-value>com.microsoft.sqlserver.jdbc.SQLServerDriver</param-value>
</init-param>
<init-param>
<param-name>DBURL</param-name> <param-value>jdbc:sqlserver://localhostsqlexpress:1055;databaseName=CORNERS</param-value>
</init-param>
<init-param>
<param-name>DBUser</param-name>
<param-value>sa</param-value>
</init-param>
<init-param>
<param-name>DBPwd</param-name>
<param-value>myPasswd</param-value>
</init-param>.
And yes, the port is 1055 - I checked to find it.
I am using Microsoft SQL Server 2005 JDBC Driver 1.0 (sqljdbc_1.0.809.102).
Does anyone have any idea what is wrong so that the login fails in the Java application but works in the .Net application?
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Apr 13, 2008
have SQL Server 2005 std edition SP1 installed on Windows 2003 Std edition .Configured Transactional (single Publisher and no clustered environment.)
Replication past two months working fine, Now
1.Distrib.exe application err is coming.
Due to which my job is failing (Distributor to Subscriber).
Iam attaching thw file.
Thanks
Sandeep
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Mar 12, 2007
I don't know why my application on the internet try to access the SQL Server 2005, when the host still having the 2000 edition. I put the following connection string:
Data Source=##DBSERVER##;Initial Catalog=##DBNAME##;User ID=##DBUSER##;Password=##DBPASSWORD##;
Isn’t everything fine with that? I created the table by host but dosen’t work. I’m wondering if can I conect straight with Data Base, without register in the server, like with mdb?
This is the error that I’m getting.
When 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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
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Dec 6, 2007
Hi,
I am developing a windows application that needs to communicate with a remote SQL server 2005 database. Server allows remote connections and MSDTC service also running. Do I need to run MSDTC service on the client machine where I use desktop application ? any ideas ? It's throwing some error like
An error has occurred while establishing a connection to the server.
When 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.
But my SQL Server allows remote connection, and I am able to do a select statement.
But when I insert/update anything, it's throwing this error. I guess some problem with MSDCT. Anybody have any idea ?
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Dec 25, 2007
Hi!!
I'moving my asp application to a new hosting server.
So when i tried the setup locally with the live DB & application in my test machine...
The DB access is denied when application tries to hit the DB.
DB is in seperate machine with SQL Server 2000 & application(ASP) is in Windows server 2003.....
Kindly help me with your suggestions....on what went wrong?
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Oct 4, 2005
hai,
We are facing problem to start the Microsoft SQL server Reporting services. While starting the Report Manager, we are getting a message called “SERVER APPLICATION UNAVAILABLE”.
We checked the Event log for errors. We found the error id 1007, 1084, but it’s related to asp.net
The following are the services not able to start
1. MSSQL ServerAD Helper.
Any one suggest me to find solution.
Thank you.
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Sep 23, 2007
I have several general questions about this but I thought I would describe what I am doing first. My senior project team is developing a web application that will wind up using SQL Server for the database. We are writing it in ASP.net and developing the database on SQL Server Express. My job is to develop and deploy the database. I have an ERD designed and am getting ready to start coding the tables, constraints and stored proceedures but am unsure of a couple of things.
1) How do I create a new schema?
2) I can see how to create tables in the GUI but what I am trying to do is create scripts that can be used to create the tables and objects on the actual server that our client will be using. How do I create scripts in 2005 Express? Do I just go click on the new query button?
3) Are scripts that work for Express going to have any problem executing on SQL Server?
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Aug 10, 2006
Hello,
I have to do an impact analysis for migrating a .Net web based application. The current and desired scenarios are mentioned below.
The current environment:
OS - Windows 2000, SP4
Framework - .Net 1.1
SQL Server - MSSQL Server 2000
Desired Environment:
OS - Windows 2003, SP1 / Windows 2003 R2
Framework - .Net 1.1
SQL Server - MSSQL Server 2005
Please let me know
1. If any changes need to be done in the application when migrating the database from 2000 to 2005?
2. Any relevant document which will help me in the same.
Regards, Venkat
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Nov 21, 2007
I'm sorry to bother you.
Now I'm trying to run PHP web application on x64 2003 Server with Microsoft SQL Server 2005. The version of PHP is 5.2.3. and the web application should be run as 64bit applications. Since there seems no way to use php_mssql.dll on the environment, I'm trying to use SQL Server 2005 Driver for PHP but when PHP loads php_sqlsrv.dll, an error has occurd and there's a following message in an error log...
PHP Warning: PHP Startup: Unable to load dynamic library 'c:phpextphp_sqlsrv.dll' - %1 is not a valid Win32 application
From this message, I thought the distributed libraries for Windows would be for a Win32 environment but there seemed no information that says the libraries run on Win32 environment only.
I really appriciate if you help me.
Thank you.
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Apr 1, 2007
Hi Everybody,
I have made one simple application in asp.net 2.0 using VS 2005. I got following error
Server Error in '/[applicationname]' Application. --------------------------------------------------------------------------------
An error has occurred while establishing a connection to the server. When 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. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
- When i got on my local machine i solved it by deleting sqlexpress directory from user's account and it was due to that I have installed VS 2005 on machine and by default it installs sql express with it.
- But I could not solved this error on my Development Server wherein there is no VS 2005. Only .Net framework 2.0 & 1.1 are there. My all other applications are running well.
So if any one have idea regarding the solution for this error then please reply me soon. It is very urgent.
Thanks to all of you.
Regards, Hardik B.
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Jun 2, 2008
Hi,If an application written in ASP.Net that uses SQL Server 2000 can have certain features that will not work on SQL Server 2005?There is an application written in ASP.Net with SQL Server 2000 which I need to convert to SQL Server 2005 but the original developer says it uses certain SQL Server 2000 specific features and won't work directly on SQL Server 2005 without modifying code. Are there any such features? Thanks
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