How To Code Login Form With A Sql Server Database?

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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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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Hi all,

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Hi all,

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First off I have unchecked show friendly errors in IE and have enabled ASP to send error messages to the browser.

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Microsoft OLE DB Provider for ODBC Drivers error '80004005'
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/index.asp, line 10 which is dbConnect.Open cstring


from this peice of code:

sub dbOpen()
set dbConnect = Server.CreateObject("ADODB.Connection")
cstring = "DSN=mysqldsn; Trusted Connection=yes"
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I have gone into ODBC and have setup both a user dsn and file dsn that equals mysqldsn and points to my database (I know you only need to set up one DSN but I'm not sure which)

I also notice under mywebsite home panel there is a connection string option. Do I do anything with that?


Definatley a lot more to it than XP's II6!

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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?

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This forum is best viewed with a computer. Questions asked freely. Confusion happily shared.

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Nov 22, 2006

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I created a table in sql server with 2 fields in it , User and Password.

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Hi all,

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need help with my problem
i have this view
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------------------------------------------ for example

if i put
unit_date = 01/05/2008
and unit=1
than new_unit=1




Code Snippet

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AS new_unit

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it doesn't matter if it change the "unit" value in the table "dbo.empList" or "unit_date" value

the important thing is that i can forward +1 or backward -1

evry time i run the stored procedure i get +1 (in the "new_unit")
and olso
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this stored procedure that move backward the the "unit" value in the table "dbo.empList" or "unit_date" value in -1

TABLE dbo.empList

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----------------------------------------------------------------------------
11111 6 01/01/2008 1
2222 8 01/03/2008 4
3333 9 01/04/2008 3

TNX for the help

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Hi,
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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



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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. Stack Trace:



[SqlException (0x80131904): Cannot open database "Northwind" requested by the login. The login failed.
Login failed for user 'JERRY-3C9615BAAASPNET'.]
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +684883
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +207
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1751
System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +32
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +601
System.Data.SqlClient.SqlInternalConnectionTds..ctor(SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +159
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +346
System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28
System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +445
System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +304
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +85
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
System.Data.SqlClient.SqlConnection.Open() +111
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +121
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +137
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +83
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1837
System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +17
System.Web.UI.WebControls.DataBoundControl.PerformSelect() +129
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +70
System.Web.UI.WebControls.GridView.DataBind() +4
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82
System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +69
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +41
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1787


Version Information: Microsoft .NET Framework Version:2.0.50215.312; ASP.NET Version:2.0.50215.312  

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Thanks



Sub btnUpdate_Click_1(sender As Object, e As EventArgs)
Dim UserCode as String
Dim PropertyCode as String
Dim UnitCode as String
Dim address1 as String
Dim address2 as String
Dim address3 as String
Dim city as String
Dim zip_Code as String
Dim description as String
Dim price_Range as String
Dim state as String
Dim type_Property as String
Dim property_Status as String

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txtUnitCode.ReadOnly = False

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'address2 = txtAddress2.Text
'address3 = txtAddress3.Text
'city = txtCity.Text
'zip_Code = txtZipCode.Text
'description = txtDescription.Text
'price_Range = txtPriceRange.Text

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PropertyCode = txtPropertyCode.Text
UnitCode = txtUnitCode.Text

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dbCommand.CommandText = queryString
dbCommand.Connection = dbConnection

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dbParam_code.ParameterName = "@Code"
dbParam_code.Value = UserCode
dbParam_code.DbType = System.Data.DbType.String
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dbParam_prop_Code.ParameterName = "@Prop_Code"
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dbParam_prop_Code.DbType = System.Data.DbType.String
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dbParam_unit_Code.DbType = System.Data.DbType.String
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dbParam_address2.Value = txtAddress2.Text
dbParam_address2.DbType = System.Data.DbType.String
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dbParam_city.DbType = System.Data.DbType.String
dbCommand.Parameters.Add(dbParam_city)
Dim dbParam_state As System.Data.IDataParameter = New System.Data.SqlClient.SqlParameter
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dbParam_state.DbType = System.Data.DbType.String
dbCommand.Parameters.Add(dbParam_state)
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dbParam_zip_Code.Value = txtZipCode.Text
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dbParam_description.DbType = System.Data.DbType.String
dbCommand.Parameters.Add(dbParam_description)
Dim dbParam_property_Status As System.Data.IDataParameter = New System.Data.SqlClient.SqlParameter
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dbParam_price_Range.Value = txtPriceRange.Text
dbParam_price_Range.DbType = System.Data.DbType.String
dbCommand.Parameters.Add(dbParam_price_Range)

Dim rowsAffected As Integer = 0
dbConnection.Open
Try
rowsAffected = dbCommand.ExecuteNonQuery
Finally
dbConnection.Close
End Try

'if Not rowsAffected then
Response.Redirect("./editproperty.aspx")
'end if
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