Howt To Change ConnectionString In Context

Feb 7, 2007

Hi All

i am very new to SQL CLR,

I create create an sample stored Procedure and registed the assembly and execute the SP in the query window , its working fine. But my doubt was -

1) In the SQLConnection object ,its like ("context connection=true") What is the use of this string and can i change this string to like this "Data Source=SystemNameSQLExpress;Initial Catalog=SampleDB;Integrated Security=True"?

is it possible to change the connection in the SQLConnection constructor with any databse connection

2) Is there any possobility to add configuration file in SQL Server project?

Please any one help me to know ... Thanks in Advance...

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Change Connectionstring For Dataset

Jul 25, 2006

I'm having this application using the express way to create the dategridview by having the query string builder. However, my computer recently crashed and I have no idea to change the connection string. so when I load the whole windows application, I am unable to view the information that are supposed to be in the datagridview. however, it returned an exception.
after finding out the main culprit, I realised that the database is using the old sql server's login. since it is using the old database's login, therefore it is unable to log the information into the datagrid view.
Please help! Thanks.

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How To Change Connectionstring In SQLCLR Project?

Aug 3, 2006


I have created a SQLCLR (database) using C#.. named SQLCLRtest

The Connection string is stored in SQLCLRtest.csproj file

here is code of csproj file

<Project xmlns="">
<FlavorProperties GUID="{c252feb5-a946-4202-b1d4-9916a0590387}">
<DatabaseConnection Name="Data Source=DBserver;Initial Catalog=TestDB;Integrated Security=True" Provider="{91510608-8809-4020-8897-FBA057E22D54}" ConnectionString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


I have an sp which start an external process, It is working at my local machine but does not work at remote server.


Local machine has SQLExpress (SQL version) while remote machine has SQL Enterprise ..

SQL service is running under the System Account at both machines..

I have enabled the Sql server Service to interact with desptop, so that it can start a process in GUI mode.

I thin there is something in connectionstring which does not allow the application to connect to server with appropriate rights.

How I can chage this setting .. is it possible to write this info manually..

Please, comments


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64 Bit TextFile ConnectionString Unable To Dynamically Change??

Feb 8, 2006


On a 64bit Itanium cluster, I'm having a problem dynamically setting the ConnectionString of a TextFile Source using the "EvaluateAsExpression" = True and setting the ConnectionString using an expression from a variable. I get the error message:

-1073647612,0x,The result of the expression "@[User::vFullFilePath]" on property "ConnectionString" cannot be written to the property. The expression was evaluated, but cannot be set on the property.

This is not a problem at all on a 32bit machine. I can run the same package on 32bit and it runs fine.

The funny thing is, I'm able to dynamically change the ConnectionString of a Logfile that we're writing all of the errors to, which I believe is using a TextFile Destination connection under the covers somehow (I'm using the SSIS Logging, to a textfile).

Can anyone confirm if this is a problem in 64bit?



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Cannot Change DB Context In Cursor

Jun 18, 2006

Hi There

I am trying to loop through databases to gather information.

However if i loop though datbases in a cursor, by using a select from sysdatabases, once i am in the cursor and SET @Sql = 'use ' + DBName and EXEC(SQL), the database context never changes from the one the cursor is executing in.

Is there a way to loop through database contexts and execute sql ?


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Oct 4, 2007

I have 30+ databases in sql 2000.
I want to dynalically loop though each of the databases and alter a column named 'EmpName' for all the 'Employees' tables in that database.
Here is my attempt.use Master
declare @SQLString Nvarchar(1000)
declare @DBName Nvarchar(100)
declare @SQL2 NVARCHAR(1000)declare @TABLE_NAME NVarchar(100)
SELECT name FROM sysdatabases
      SET @SQL2 = 'USE ' + @DBNAME + ' ALTER TABLE ' + @TABLE_NAME + ' MODIFY EmpName varchar(100)'
     from information_schema.tables where table_type = 'BASE TABLE' and table_name like '%Employees%'      PRINT @SQL2
fetch next from curDB into @DBName
Close curDB
When i execute the above script in master, it says 'Query executed successfully' but when i see the all the Employees table in each of the database, the required change is not made.
Can anybody explain this or give an alternate solution? 

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Oct 4, 2007

I am using Sql Server 2000.
I have about 25+ databases . I want to run a series of commands on each database... how can I change the database context - the current database - dynamically in a loop...
something like this below:

declare @SQLString Nvarchar(1000)

declare @DBName Nvarchar(100)

declare @SQL2 NVARCHAR(1000)

declare @TABLE_NAME NVarchar(100)



SET @SQL2 = 'USE ' + @DB_NAME + ';GO;ALTER TABLE ' + @TABLE_NAME + ' MODIFY Name varchar(100)'




I am getting an error when i run the above commands:
Msg 170, Level 15, State 1, Line 1
Line 1: Incorrect syntax near 'GO'

Can someone give me the correct solution?

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Apr 28, 2015

USE master
Declare @db as nvarchar(258) = quotename (N'tempdb')
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What Different Are There Between ConnectionString (Part 1) And ConnectionString (Part 2) In Web.config

Apr 12, 2006

What different are there between connectionString (Part 1) and connectionString (Part 2) in web.config
The CCWW is my PC's name, normally I can connect to the database ASPNETDB.MDF correctly either Part 1 or Part 2 in a web page,After I open Database Explorer panel and browse ASPNETDB.MDF, I can't connect to database using Part 2 when I open a webpage in Microsoft Visual Web Developer 2005 Express Edition,but I can correctly open a webpage using Part 1 after I open Database Explorer panel.
What different are there between connectionString (Part 1) and connectionString (Part 2) in web.config?
I guess  while I use Part 1 to connect, maybe it will be cancel exclusive method of the database  ASPNETDB.MDF first, but when I connect to database using Part 2, maybe two programms both Part 2 and Database Explorer visit ASPNETDB.MDF at the same time!
--------------------------------------Part 1------------------------------------------------------------------------<add name="MyConnect" connectionString="Data Source=.SQLExpress;Integrated Security=True;User Instance=True;AttachDBFilename=|DataDirectory|ASPNETDB.MDF"          providerName="System.Data.SqlClient" />  --------------------------------------Part 1------------------------------------------------------------------------
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Mar 1, 2008

Just installed Express edition on my laptop and don't know how to set up the connection string in my aspx.vb page.
I've added my connection in the webconfig page and want to set up the vb page.  This is not working please tell me what's missing in the Dim conn section.Protected Sub SubmitInfo_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SubmitInfo.Click
Dim conn As ConnectionStringsSection = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|BEEN.mdf;Integrated Security=True;User Instance=True"Dim cmd As New Data.SqlClient.SqlCommandWith cmd
.Connection = conn
.CommandType = "AddUserInfo".Parameters.AddWithValue("@FName", Fname.Text)
.Parameters.AddWithValue("@LName", LName.Text).Parameters.AddWithValue("@Email", Email.Text)
.Parameters.AddWithValue("@Comments", Comments.Text)
End With
End Sub

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Nov 24, 2005

Hi I'm using Sql Server (SQLOLEDB.1) and I want to connect it by Sqlconnection.those are the details:user Id: saPassword: *****database: ServiceManagementserver name: KLXPE002KULMOSWhat should be the Connection String? Thats what i did:
"Persist Security Info=True;Integrated Security=SSPI;server=SQLOLEDB.1;database=ServiceManagement;Data Source=KLXPE002KULMOS;User ID=sa;password=****"It doesn't work.thnxItai

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Help With ConnectionString

May 11, 2006

I have just tried to deploy my app from my local pc to our server and I have been getting this error.
Server Error in '/' Application.

Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: The connection name 'LocalSqlServer' was not found in the applications configuration or the connection string is empty.Source Error:

Line 164: <providers>
Line 165: <add name="AspNetSqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/"
Line 166: type="System.Web.Security.SqlRoleProvider, System.Web, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
Line 167: <add name="AspNetWindowsTokenRoleProvider" applicationName="/"
Line 168: type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />Source File: C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Configmachine.config    Line: 166

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
I am new to SQLExpress 2005 and 2.0.  I created some database files on my local pc then copied the whole app to the server.  Not sure what to do.
Any help would be greatly appreciated or direction to info.
Thanks Matt

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Mar 18, 2008

hey all,

Im a bit lost as what i should have in my connectionString to a sql server

string connectionString = "server=localhost;database=databasename; uid=sa;pw=sa";

The server is on the localhost, the database name is ok, but what do I put in for the username and password?, At the moment because it is hosted locally I am not using any logins.



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Jun 28, 2006

I am having trouble initializing my connection. This is the code:

DBConnPhone As New

        Dim DBConnClient As New

        Dim Sqlcomm1 As New SqlCommand

        Dim Sqlcomm2 As New SqlCommand



Once I start debugging, it stops and give me the error "The ConnectionString Property was not initialized" Any suggestions?

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Nov 23, 2006

Hello! I am working at a ASP.NET Project with has a sign-in area. All users (the aspnet_Membership and so on) are on an external SQL Server stored.The ConnectionString in the web.config looks like this:<add name="hspWerbung" connectionString="Persist Security Info=False;User ID=XXXXX;Password=XXXXX;Initial Catalog=HSPWERBUNG01;Data Source=SERVER_SQL_02STOCKHOLM"   providerName="System.Data.SqlClient" />Is there any way to create a ConnectionString without the User ID and without the password?When i want to reach my site on the web (not with http://localhost/...) , i can't do it with "Integrated Security=True", because there will be no user, or? 

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Dec 9, 2006

Hay, I have a problem with this connectionstring.Dim myConnection As New Data.OleDb.OleDbConnection("Provider=SQLNCLI;Data Source=whatever-ja4lbqsqlexpress;Initial Catalog=Account;Integrated Security=SSPI;")I use this code to receive a value on a specific query Public Sub readdata(ByVal myconnectionstring As String)
Dim mySelectQuery As String = "SELECT UserName, Password FROM TAccount WHERE UseName = '" & TextBox1.Text & "'; and Password = '" & TextBox2.Text & "';"

Dim mycommand As New Data.OleDb.OleDbCommand(mySelectQuery, myConnection)
Dim myreader As Data.OleDb.OleDbDataReader
myreader = mycommand.ExecuteReader
While myreader.Read
Label1.Text = myreader.GetString(1)

End While

End Sub  But when it execute i receive this exeption Login timeout expiredAn 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.SQL Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF]. Is this mean that i can not make a connection to my sql server 2005.
My sql server 2005 runs on my developer computer 

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Feb 14, 2007

Hi, After many nights without sleep I'm not seeing this? Can anyone help why I'm getting a ConnectionString Property not set error? thanks!
Dim Sconn As StringDim DBCon As New Data.SqlClient.SqlConnectionSconn = ConfigurationManager.AppSettings("LocalSqlServer")DBCon = New SqlClient.SqlConnection(Sconn)Dim cmdCommand As New Data.SqlClient.SqlCommand
'Dont forget to instantiate a connection object
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Feb 15, 2007

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Jun 25, 2007

Hello, Well actually I am beginner to ASP.Net, I am working on Microsoft Virtual PC with VS 2005 and SQL Server 2005 installed. Now when Create web application in Studio  all works fine with databases but when i try to write some code for accessing SQL Databases I keep getting this error PLZ heLP.Following is my code<% @ Import Namespace="System.Data" %><% @ Import Namespace="System.Data.SqlClient" %><html><script language="C#" runat="server" Debug="false" >SqlConnection sqlcon;protected void Page_Load(Object Src, EventArgs e){    sqlcon=new SqlConnection("Data Source=VS02005;Initial Catalog=Gaurav;Integrated Security=True");        SqlDataAdapter sqlcom = new SqlDataAdapter("select * from Employee", sqlcon);     DataSet ds = new DataSet();    sqlcom.Fill(ds,"Employee");    DataGrid1.DataSource = ds.Tables["Employee"].DefaultView;    DataGrid1.DataBind();}</script><form runtat="server">    <asp:datagrid id="DataGrid1" runat="server" /></form></html>This is the error i am gettingServer Error in '/' Application.--------------------------------------------------------------------------------SELECT permission denied on object 'Employee', database 'Gaurav', schema 'dbo'. 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: SELECT permission denied on object 'Employee', database 'Gaurav', schema 'dbo'. I am stuck dont know what to do, I hve checked all permissions for user gaurav, I also gave administrator rights to gaurav but nothing is working PLEASE help me. 

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Jul 4, 2007

This works:
SqlDataSource1.ConnectionString = "Data;Initial Catalog=mydbname;User ID=mydblogin; pwd=mydbpassword";
 This doesn't:
SqlDataSource1.ConnectionString = "<%$ ConnectionStrings:myConnectionString_from_WebConfig %>"
Ok, how do I tell it to use my connection string from my web.config? 

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Mar 5, 2008

HiI've my ConnectionString in web.config... I want to display the DB UserID on my webPage and  UserID is specified in ConnectionString... Can any one help me in this caseThanksNasir Ibrahim 

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Oct 26, 2004

i have problem in connectionstring in sql server.
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it will give error like.....
login fail for user "MERIDIANIUSER_GROUP"

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it will give error like.....
login fail for user "sa"

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when i use this, without instance
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but i have instance,
and i want to run with it.

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Mar 11, 2006

when I write this code in web.config :

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and write this statements in the code of program :

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this error is displyed:
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Apr 6, 2006

I've defined my connection string in the web.config file:
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Apr 1, 2008


I have completed a windows db app.
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say i wanted to install this app on my home computer, does not have sql express or anything installed.
Now i want to use the application and it must read/write data from the sql db that was saved in the application/bin/ folder.
what is the connectionstring then ?

can anyone please help ?
what im trying to say is that the application must work independent from any SQL manager/express etc.

is that possible ?

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Apr 3, 2007

Hello All,

I have changed connection string property of connectionmanger at runtime and saved package.But my new connectionstring is not persisting, i am getting my old connection string after reload package .

ConnectionManager cm = package.Connections[test.ConnectionManagerID];

cm.ConnectionString = @"C:Test.csv";

app.SaveToDtsServer(package, null,

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How can I save new connection string?.

Please help me.



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Nov 22, 2006

Hi, does anyone knows where can i find all the values that support the connectionstring??? since the connectionstring uses the "server=local;database=nortwind;UID=me...."

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Thank you, i hope i made my point clear

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Jul 26, 2006

<VS2005, SQL Everywhere CTP>

When I create typed datasets (for SQL Everywhere db) using the VS designer, I get a connectionString like Data Source =".App_DataDb1.sdf" added to the settings file by the designer. This works fine in the designer but not at runtime. If I replace the settings value to Data Source ="|DataDirectory|App_DataDb1.sdf" then it works fine at runtime but breaks the designer. I looked at the typed dataset designer generated code & it creates a SqlCeConnection object which supports |DataDirectory| macro. So, how can I get the designer & runtime to agree on a connectionString. I guess I can create a partial class for the table adapters & force a connectionString at runtime via a constructor overload, but, is that my only option?

Btw, the error I get at runtime when using the designer generated connectionString is:
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Jan 8, 2007

Hi all,
I want to connect to an SqlServer database and I have given the connectionstring on an WinXP computer as Dim ConnectionString As String = "server='localhost'; trusted_connection=true; Database='domains'"
Now, when I copied the files to another computer which is Win 2003 Server, I had to give the connectionstring as
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I want the public to read from and write to this database tables.
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Jul 30, 2007

In short, I have a couple grid views on a page that are used for editing as well as sorting, etc.  The grids are setup to use the SqlDataSources.  I'm trying to deploy this to a server environment for different instances (test,cert,prod) and am trying to set the ConnectionString for the SqlDataSource in the code behind (Page_Load()).  Everything works well, except, I get an error message that says the "ConnectionString Property Has Not Been Initialized."  Its a javascript alert coming up on top of the grid view.
Here is how I'm trying to set the ConnString in the Page_Load():this.EmployeeTimeCardDataSource.ConnectionString = ConfigurationManager.ConnectionStrings[connStr].ConnectionString;
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Oct 22, 2007

I am getting an error message that says that my connection string has not been intialized I have initialized it. 
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Jan 25, 2008

Hi all
      This is the code in my web.config file.
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      When I'm connecting to the sqlserver database,the page shows that The ConnectionString property has not been initialized.
      The code that I used to get the "ConnectionString" as belows
using System.Configuration;
protected static string connectionString =ConfigurationSettings.AppSettings["ConnectionString"]; 
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Mar 20, 2008

I have a datasource on my ASP.NET 2.0 control I want to make dynamic.  I have 6 different connection strings in my web.config file and want to change the connection with the selection in dropdownbox.
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Select Case intDb

Case 1 ' Americas
srcCustomers.ConnectionString = "RWSqlServer"
Exit Sub
Case 2 ' Asia
srcCustomers.ConnectionString = "SGSqlServer"
Exit Sub
Case 3 ' Australia
srcCustomers.ConnectionString = "SYSqlServer"
Exit Sub
Case 4 ' Canada
srcCustomers.ConnectionString = "MSSqlServer"
Exit Sub
Case 5 ' EMEA
srcCustomers.ConnectionString = "NCSqlServer"
Exit Sub
Case 6 ' NE
srcCustomers.ConnectionString = "RUSqlServer"
Exit Sub
End Select
End SubProtected Sub ddlBusinessUnit_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)

If (ddlBusinessUnit.SelectedIndex = 0) Then
panUser.Visible = False
panDistributor.Visible = False
panEndUser.Visible = False
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panUser.Visible = True
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</asp:SqlDataSource><asp:DropDownList ID="ddlBusinessUnit"
<asp:ListItem Value="" Text="Select One"></asp:ListItem>
<asp:ListItem Value="1" Text="Americas"></asp:ListItem>
<asp:ListItem Value="2" Text="Asia"></asp:ListItem>
<asp:ListItem Value="3" Text="Australia"></asp:ListItem>
<asp:ListItem Value="4" Text="Canada"></asp:ListItem>
<asp:ListItem Value="5" Text="EMEA"></asp:ListItem><asp:ListItem Value="6" Text="NE"></asp:ListItem>
What am I missing?  Do I need to reference the whole connection string or is there a way I can reference the "NAME" id in the web.config file for the connection string?

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