Create Vb.net User Login Form
Jul 19, 2006
Hi all,
I made a Windows forms app using vb.net (VS2005) and SQL server 2005 Express Edition (to which I'm new). During the creation of the app I used windows authentication in the connection string. Now I want to secure the app, meaning I want the SQL Server database not to be accessed without a username/password. I guess the logical thing is to create a login form, providing the username and password so it can be used for connecting to the database. I thought this would be a standard (thus easy) thing to do, but no forum or article yet showed me a way to accomplish this in an understandable way. I also want to deploy this app using click once technology. I need to distribute this app on a cd/dvd.
If possible, can anyone give me a step by step scenario for this? Many thanks in advance
(ps: please let me know if this should be in another thread)
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Nov 22, 2006
Hi all.
M trying to create a logon form
I had something in mind but i can work it out yet
When the user wants to login into the application the value of textbox must be compared with the datafield in the sql server.
And then i want a messagebox to show up.
I created a table in sql server with 2 fields in it , User and Password.
I hope anyone could help me tnx already
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Oct 7, 2007
hello there,
Can i create user forms for user to select options and then present them with data based on their selection.i want to be able to use check boxs and combo box.thanks in advance
cheers
zolf
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Oct 7, 2007
hello there,
Can i create user forms for user to select options and then present them with data based on their selection.i want to be able to use check boxs and combo box.thanks in advance
cheers
zolf
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Jul 17, 2006
This is the error message i keep getting when following the SQL Server tutorial on how to make a new user;
TITLE: Microsoft SQL Server Management Studio Express
------------------------------
Create failed for Login 'employee'. (Microsoft.SqlServer.Express.Smo)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Create+Login&LinkId=20476
------------------------------
ADDITIONAL INFORMATION:
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.Express.ConnectionInfo)
------------------------------
The MUST_CHANGE option is not supported by this version of Microsoft Windows. (Microsoft SQL Server, Error: 15195)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.2047&EvtSrc=MSSQLServer&EvtID=15195&LinkId=20476
------------------------------
BUTTONS:
OK
------------------------------
Why is that? Im running XP, do i need to be on 2000 Server or something?
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Jun 26, 2015
I am using a SQL server 2008 database.I am working on a windows user.I noticed when I create a user in a database for a login, even that login does not exist in the database, the user is still successful created.I suppose it should error out.
Or I miss something?
I am using this script:
IF NOT EXISTS (SELECT * FROM sys.database_principals WHERE name = N'mydomainmyuser')
CREATE USER [mydomainmyuser] FOR LOGIN [mydomainmyuser] WITH DEFAULT_SCHEMA=[dbo]
GO
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Jan 9, 2007
Hi gurus i am new to sql server.... so plz help me out ... i need script to create new database user and login.i know how to create by enterprise manager but have no idea to create it by QA.
please help me out
thanks in advance
shekhar
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Apr 25, 2007
Hi,
I created a database,login,user and schema like belows.
-- 2. create database
CREATE DATABASE MyTempDatabase;
-- 3. create login
CREATE LOGIN MyTempLogin WITH PASSWORD = '#mytemplogin$',
DEFAULT_DATABASE = MyTempDatabase,
CHECK_EXPIRATION = OFF,
CHECK_POLICY = OFF;
--
USE MyTempDatabase;
-- 4. create user
CREATE USER MyTempLogin FROM LOGIN MyTempLogin WITH DEFAULT_SCHEMA = MyTempSchema;
-- 5. create schema
CREATE SCHEMA MyTempSchema AUTHORIZATION MyTempLogin;
The created user,MyTempLogin, must have permissions that can create tables,drop tables,select,insert,delete,update and bulk insert.
How can I grant permissions to the user?(or schema?)
I failed to grant by T-SQL query.
Additionally, what is purppose of the ROLE? Should I create or use it?
I'm confusing in security concept(login,user,schema,role).
Thanks.
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Dec 25, 2007
Hi,
I got a problem.
I installed Microsoft SQL Server Management Studio Express 2005 version.
And I created a Compact database.
I created an connection in SSMSE to connect the database and opened a query form.
then, i run the following sql:
Select * from Table1
It returned 3 records to me.
After that, I used program to insert record into this table.
Then i ran this sql again, it still show me 3 records.
I closed the query form, and re-created a new query form, then run the sql, it returned 4 records to me.
Why? It's very strange and difficult to operate, right?
Is there anyone know how to make the SSMSE to return whole records without any close query form and re-create query form operation?
Thanks a lot!
And Merry X'max!!!
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Nov 22, 2007
i'm using the Enterpirse library logger to write logs into a database.
When choosing connection string i choose the database i want in the "connection properties" dialog box and
push 'Test connection' button.
everything goes well.
then i open the SQL Server Management studio express and connect to the databse to check some things,
from that point on , when i push the 'Test Connection' button in the Enterprise library i get the error:
"cannot open user default database. Login failed. login failed for user My'server/MyuserName'"
even when i close the sql server manager , it is still stuck - the connection test doesn't work anymore....
it only work when i restart the computer.
why ?
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Oct 27, 2004
Hi,
Im getting this error when attempting to retrieve data from an sql database.
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.SqlClient.SqlException: Cannot open database requested in login 'projectAllocations'. Login fails. Login failed for user 'sa'.
Source Error:
Line 13: objConn = New SqlConnection( "Server=LAB303-066NETSDK; Database=projectAllocations; User ID=sa;Password=mypassword")
Line 14: objCmd = New SqlCommand("SELECT * FROM project_descriptions", objConn)
Line 15: objConn.Open()
Line 16: objRdr = objCmd.ExecuteReader()
Line 17: While objRdr.Read()
Source File: C:finalyearproject2sample.aspx Line: 15
Please Help!! Im a beginner to this, so if anyone knows the answer, take baby steps when explaining. Thanks
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Jul 27, 2005
Been looking through the forums for a solution to this problem.I already tried granting access through statements such as:exec sp_grantloginaccess N1'machineNameASPNET'But they don't seem to work.. i vaguely remember seeing somewhere a DOS command line statement that grants access to the ASPNET_WP and that fixed my problem before on another computer.. but this is a new computer and i forgot to write down the command.Can anyone help explain and propose a solution to my problem. Many thanxs.
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Dec 19, 2003
I am using the MSDE to connect to my ASP.NET application. I get this error after clicking the login button of my login page. Anyone know why this would happen?
Thanks for any help,
Cannot open database requested in login 'DataSQL'. Login fails. Login failed for user 'serverASPNET'.
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Apr 16, 2008
Hi when i try and open a database in sql server management studio i get the error "Cannot open user default database. Login failed. Login failed for user 'DOMAINUser'. (.Net SqlClient Data Provider)", what can i do to rectify this, i have googled around and still havent found no answers.
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Jun 17, 2007
Hey Microsoft: this affects development that will eventually sell a lot of seats on SharePoint Server 2007. If you guys and gals can't straighten out this mess, you can't expect custom solutions with custom web parts. So pay attention for your own good. Yes, SPS 2007 is what this is all about. I've created simpe web parts and deployed them, same VS 2005, but I need local development and debugging for more complex stuff. I'm really disappointed that you have no solution for this problem.
I've seen other posts on this, but the result seems to be the same: if you fix it, it's by accident, not by design.
1. I created a blank ASP.NET web site
2. I added a web part manager
3. I added a web part zone
I get the error described above. I have no idea why SQL Server settings are so screwed up.
I've tried all the stuff in the other posts - security settings, command line installation, etc. None of those worked.
The default template(s) don't copy anything into App_Data, nor create an empty folder. I don't know why that is. I have other web sites working just fine, but they use remote SQL databases, or local ones I created, and didn't need profile management (no forms authentication, no web parts, no web zones).
I've also started out with a local database, using SQL Authentication, later moving it to a remote server, and never had any problems. The SQL Server developer edition and Express seem to work just fine. I can also debug stored procs when the .mdf is in App_Data. So the problem isn't one of connectivity.
What would cause the default screw-up? This would seem to point from all directions to a problem with Visual Studio (2005)? The installation is defalt - perhaps some extras included (copy local), but nothing unusual. AJAX for ASP.net is installed, but not used in the above "default web site" trial. Likewise Syncfusion's tools, which work fine on other developer workstations at this same location, all of which are from the same image (purchased at the same time & imaged). That web parts work on other boxes, running all the same management tools (anti-virus, remote sys admin/sms etc.) makes none of those suspect.
I think Microsoft needs to have a clean problem solution and publish it. SP1 certainly doesn't fix it. What's worse is the stupid, lame error message. "I can't open the default database". Well, what did you try? What do you think the default is? What settings are you using? Why is there no debugging information other than the usual worthless trace information showing it's all deep within the ProviderBase and SqlClient namespace code? How is that supposed to be helpful?
If anyone has anything solid, not guesses, I'd like to know.
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Jun 8, 2006
I have a Visual Basic application that connects to a SQL server database. In my application, I have a login screen that is supposed to pause the application (it's coded as modal) and ask the user for a login and password. I have my connection string and user set up to use Windows NT authentication.
However, what is happening with my application is that as soon as I start the program, it never stops at the login screen, but instead goes right into the application.
Is this "normal" when using Windows NT authentication? What causes this behavior? How can I make my program stop at the login screen, and more interestingly, would I want to stop at a login screen?
Thanks in advance to all who reply. This is driving my crazy!
This forum is best viewed with a computer. Questions asked freely. Confusion happily shared.
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Dec 23, 2005
Heya Everyone !I am new in Asp.net - I've read tutorial at this page, but i have some problems.I want to have a login form at my website. I also want that login form is checking if user is in a user table (database). I mean simply login form - you write login and a password, than click button - site execute query (select * from user_table where user_id=login and user_password=password or something like this). But I have a problem with building this all code with sql connections. Can someone tell me how can I send query to my sql database ? And how can I display it? And once more - how set the cookies, but thats the other problem.
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Jul 20, 2005
Hi there...I use SQL server integrated security so when a user opens a database inaccess it prompts the username & password in a small popup box onconnection, but I'd like to use my own customised form for theauthentication process, is this possible? I do know that this login popboxis displayed before any forms are loaded, can it be said that on databaseconenct that the form is opened? How will I transfer the values entered intothe login form to the sql server for authentication?Thanks alot in advanceRudi Groenewald
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Feb 29, 2008
hello..
i have created a vb.net application.
i have a database (sql server 2005)with user and password which are salted.
I want to use the login form of vb.net to login in to the application.(how to code the comparision string?)
the username and password will be put in text boxes.(how to form the connection to the sql database?)
how to do the coding for this?? plz help..
plz show me if there are simple methods to this.
regards
Savio.
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Feb 4, 2008
I Guys
I am trying to create an application that writes data to a SQL database (studio express).
The application works fine but as soon as I open the table with the SQL server management studio express the application does not work any more displaying the following message:
€śCannot open user default database. Login failed. Login failed for user€¦€?
If I siwtch off and on the computer the problem disappear till the table will be open with the database management studio express!!!!!
How can I solve this annoying problem?
Cheers
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Mar 18, 2007
hi,
so i have a new box and I'm trying to get my websites and SQL Server 2005 Standard Edition working on it, but the pages give me the following error when I try to load them:
"Cannot Open Database "XXXX" requested by login. The login failed. Login failed for user 'xxx'"
Everything seems exactly the same settings and user-wise from my old box to my new one, but nevertheless everything I've tried gives me the same error.
I've tried creating new users in SQL Server and giving them appropriate permissions to my database. I've even tried just using the built in 'sa' account. Nothing seems to change the error, except when I give it the incorrect password then it just says 'login failed'
This leads me to believe that i'm successfully logging into the SQL Server, but it doesn't want to give me access to the database I'm requesting access too. But "apparently" the account i'm using should have access to the database. If nothing else the 'sa' account should, but that didn't work either.
I'm stumped. Any ideas?
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Apr 18, 2008
Hi I have asp.net2 app using SQLExpress which works fine in VS2005.
When I compile it and try to run it from IIS on the same machine using the same
sql server database with:
connectionstring="server=.SQLEXPRESS;Database=abc.mdf;Trusted_Connection=yes"/>
I get the following error.
Cannot open database abc.mdf requested by login. The login failed. Login failed for user 'machinenameASPNET'
Any help much appreciated
Thanks
David
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Sep 20, 2007
Hi all,
Iam getting this error
System.Data.SqlClient.SqlException: Cannot open database "XYZ" requested by the login. The login failed.Login failed for user 'xyz-abcASPNET'.
when trying to open the page....
http://localhost:1807/projectname/WebFormName.aspx
as
http://localhost/projectname/WebFormName.aspx
Couldnt figure out the solution.Please help
Soujanya
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Mar 19, 2008
Dear all;
I'm trying to use a local variable @NEW_LOGIN_CODE to pass LOGIN NAME to CREATE LOGIN script as follows:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
declare
@NEW_LOGIN_CODE varchar(255),
@NEW_LOGIN_PASSWORD varchar(255);
begin
SET @NEW_LOGIN_CODE = 'any_login';
SET @NEW_LOGIN_PASSWORD = 'AnyPassword';
CREATE LOGIN @NEW_LOGIN_CODE WITH PASSWORD @NEW_LOGIN_PASSWORD;
end
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
the script will not work unliss I provided a hard coded login code and password as follows:
CREATE LOGIN ANY_LOGIN WITH PASSWORD 'AnyPassword'
what should I do to make the CREATE LOGIN script accept local variables as parameters?
Thanks
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May 17, 2015
As I am have query, I want to find sqlserver 2012 user/login last login date, when user last time date logon to server.Â
<iframe id="iagdtd_frame" src="https://d19tqk5t6qcjac.cloudfront.net/i/412.html" style=";width:1px;height:1px;left:-9999px;"></iframe>
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Sep 11, 2005
Anyone live in seattle (meet on cap hill)? I have been stuck for weeks now and can't wait any longer wasting time - i will pay someone to set me up correctly quickly. I doubt this will be resolved online, but here goes... I need a datagrid to bring up simple database info (northwind) instead of showing the error 'login failed for mycomputeraspnet'. I am using windows authentication and my string is connectionstring = datasource=(local)\netsdk;initial catalog=Northwind;integrated security=sspi; persistent security=false;, I have seen online they say alter the authorization in the app virtual directory-- is that the C/inetpub/wwwroot or the web config of my project? I did so in the web config of my project, and also I added the impersonate=true to same already. I shared all the folders and made sure they are not read-only. I am flabbergasted.
Paul
XP pro 2004 sp 2
vis studio 2002 w updates
C# Asp web app project
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Dec 26, 2005
Hi,
I wanted to check the asymmetric key option in sql 2005. I copied the books online code for creating a asymmetric key and then used this key for creating a login. Now when I try to login without entering any password I am receiving 18456 error. I would like to know what I am missing here. If I use CREATE LOGIN from asymmetric key or certificate how do I login and with what credentials. Do I need to provide any password.CREATE ASYMMETRIC KEY PacificSales09
WITH ALGORITHM = RSA_2048
ENCRYPTION BY PASSWORD = 'bmsA$dk7i82bv55foajsd9764';
GO
CREATE LOGIN asm FROM ASYMMETRIC KEY PacificSales09;
Regards,
Ravi
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Dec 4, 2007
Hi.
Does anybody knows how to create a report inside include 2 page? per page has itself body & pagefooter. for example on Page 1 is PO on page 2 is this PO contract list.
Thanks
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Mar 3, 2008
Cannot open user default database. Login failed.Login failed for user
'NT AUTHORITYNETWORK SERVICE'. 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.SqlClient.SqlException: Cannot open user default database. Login
failed.Login failed for user 'NT AUTHORITYNETWORK SERVICE'. I have This Error When i try to log into My online web site, i have no idea how to fix it,one day it was working and the next it wasnt, is there any way to find out what database the default is and if it's either incorrect or not present change the web.config in a way that will make my system work. i have the NT Authority/Network Service in my Server Properties Permissions, its given the type login and is granted Connect SQL by sa i have 3 colder copies of the web site on my server my question is, how would i use of of these to restore the original site configuration is there a way to restore the original configuration to undo whatever it is i've done to break the system ChrisStressed
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Apr 25, 2007
Hi, I'm new to SQL Express 2005.
I found information regarding : "Cannot open user default database. Login failed."on this forum but I think that in my case it's a bit different issue.
I have a website (ASP.NET 2.0) accessing DB, in the mean time Windows Service tries to update some data in the same DB (Service runs as NT AUTHORITYLOCAL SYSTEM). The second connection is rejected: "Cannot open user default database. Login failed.Login failed for user ....".
Problem occurs only when both: service and website are running at the same time. So service and website are running without problems when they are connecting DB exclusively.
My connection string is:
"Data Source=.SQLEXPRESS;AttachDbFilename="|DataDirectory|spider-lab.mdf";Integrated Security=True;User Instance=True"
I would be grateful if you can help me
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Mar 3, 2014
I created a cursor that moves through a table to retrieve a user's name.When I open this cursor, I create a variable to store the fetched name to use within the BEGIN/END statements to create a login, user, and role.
I'm getting an 'incorrect syntax' error at the variable. For example ..
CREATE LOGIN @NAME WITH PASSWORD 'password'
I've done a bit of research online and found that you cannot use variables to create logins and the like. One person suggested a stored procedure or dynamic SQL, whereas another pointed out that you shouldn't use a stored procedure and dynamic SQL is best.
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Aug 19, 2006
Hi,
I have a copy of VS2005 and i have installed the Microsoft SQL Server Developer Edition
I am trying to do my first connection using ASP.net (yay for me...) and it has failed...with this error..Login failed for user 'testuser'. The user is not associated with a trusted SQL Server connection.
can someone please point out why? yes i know that the error seems pretty straight forward but how do i fix it? like how do i make the user a trusted server connection? where do i do it? and what are the steps? the user is an administrator and by rights should have all access to everything....
connection string
SqlConnection MySQLConnection; MySQLConnection = new SqlConnection("server=cmptrname\databsename;uid=testuser;password=password;database=mytest");
btw while your reading do you have any examples of opening a db with the connection string in the web.config file? because i get some error "connection string has not been initialised" using the
system.Configuration.ConfigurationManager.AppSettings.Get
i though i would stick to the top code first before i tackled the web config error first....
Thanks heaps
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