Connection String For SqlCeConnection

Nov 4, 2005

Which format is assumed for connection string for SqlCeConnection?

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SqlCeConnection Failing To Open A Connection To The SQL Server 2005 Mobile Edition

Apr 15, 2008

Good day,

I am writing an application using VB.Net 2005 for the Windows CE 5.0 device and it is connecting to a SQL Server 2005 Mobile Edition Database.
The trouble I'm having is establishing a connection to a SQL Server Mobile database on the device.

Here is the code I am using:




Code Snippet
Public gConnectionString As String = "Data Source=Program FilesMobAppMobDB.sdf;Persist Security Info=False;"




Code Snippet

Imports System.Data.SqlServerCe

Public Class DBManager

Public Shared gSQLCEConnection As SqlCeConnection


Public Shared Function OpenDB() As Boolean

If gSQLCEConnection IsNot Nothing Then

Throw New InvalidOperationException("Connection already open.")
End If
gSQLCEConnection = New SqlCeConnection(gConnectionString)
Try

gSQLCEConnection.Open() 'Error occurs here
Return True
Catch ex As SqlCeException

MsgBox(ex.Message & vbCrLf & ex.HResult & vbCrLf & ex.NativeError & vbCrLf & ex.Source)
Return False
End Try
End Function


In the immediate window I recieve the following messages:


A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll

A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll

A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll

A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll

A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

A first chance exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in System.Data.SqlServerCe.dll


I believe that the first few lines are caused by the icons/pictures that I have included with my app, but the SqlCeException line occurs when the connection to the .SDF file is trying to be established.

Here is the exception output:

Message: "" (Blank)
HResult: -2147024882
NativeError: 0
Source: SQL Server 2005 Mobile Edition ADO.NET Data Provider

Programs under Remove Programs on the PDA are:
Microsoft .NET CF 2.0 ENU-String R...
Microsoft .NET Compact Framework...
Microsoft SQL Client
Microsoft SQL Mobile 2005
Microsoft SQL Mobile 2005 [EN]
Microsoft SQL Server 2005 Compact...
Microsoft SQL Server 2005 Compact...
Microsoft SQL Server 2005 Compact...
Microsoft SQLCE 2.0
Microsoft SQLCE 2.0 Dev

Any ideas on what could be stopping this connection from being established? It was working before but all of a sudden just stopped. I have warm booted, cold booted, and rebuilt with no luck and also checked that SQL Query Analyzer is not running on the PDA and that the connection string is valid.
The call to OpenDB occurs in the form_load of the startup object.

Thanks in advance,

Leon

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Cannot Set Connection Property Of Backup Database Task If Connection String Is Customized In Connection Object

Aug 23, 2006

I added a connection (ADO.NET) object by name testCon in the connection manager - I wanted to programmatically supply the connection string. So I used the "Expressions" property of the connection object and set the connectionstring to one DTS variable. The idea is to supply the connection string value to the variable - so that the connection object uses my connection string.

Then I added a "Backup Database Task" to my package with the name BkpTask. Now whenever I try to set the connection property of BkpTask to the testCon connection object, by typing testCon, it automatically gets cleared. I am not able to set the connection value.

Then after spending several hours I found that this is because I have customized the connection string in testCon. If I don't customize the connection string, I am able to enter the "testCon" value in the connection property of the BkpTask.

Is this an intrinsic issue?

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The Connection Name 'LocalSqlServer' Was Not Found In The Applications Configuration Or The Connection String Is Empty.

Sep 27, 2007

Hi,
I'm having a BIG problem, this is my 3rd day looking for answer !I'm trying to create a custom membership provider with MS SQL database 2005 but not the default ASPNETDB. I've changed the web.config to be as following:<connectionStrings><add name="sqlConn" connectionString="Data Source=.;Integrated Security=True;Initial Catalog=ASPNETDB;"providerName="System.Data.SqlClient" /></connectionStrings> <system.web><trace enabled="true" /><roleManager enabled="true" /><authentication mode="Forms" />
<membership defaultProvider="MySqlProvider"><providers><remove name="AspNetSqlProvider"/><add name="MySqlProvider" connectionStringName="SqlConn" type="System.Web.Security.SqlMembershipProvider" applicationName="/" /></providers></membership>
But when I try to login to the site using the login control the following error occurs:
Server Error in '/etest' 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 149: <roleManager>
Line 150: <providers>
Line 151: <add name="AspNetSqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
Line 152: <add name="AspNetWindowsTokenRoleProvider" applicationName="/" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
Line 153: </providers>Source File: C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Configmachine.config    Line: 151


Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.213
 It is clear that this is a prblem with my Machine.Config file - since I've "worked!" on this file for a while. But when I've checked the Machine.config file I've found the LocalSqlServer connection it is talking about! .
I'm lost and I dunno what to do, can anyone help?
Here is the mahine.config in case if you need it:<connectionStrings>
<add name="LocalSqlServer" connectionString="data source=.;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient" /></connectionStrings>
<system.data><DbProviderFactories>
<add name="Odbc Data Provider" invariant="System.Data.Odbc" description=".Net Framework Data Provider for Odbc" type="System.Data.Odbc.OdbcFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /><add name="OleDb Data Provider" invariant="System.Data.OleDb" description=".Net Framework Data Provider for OleDb" type="System.Data.OleDb.OleDbFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add name="OracleClient Data Provider" invariant="System.Data.OracleClient" description=".Net Framework Data Provider for Oracle" type="System.Data.OracleClient.OracleClientFactory, System.Data.OracleClient, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /><add name="SqlClient Data Provider" invariant="System.Data.SqlClient" description=".Net Framework Data Provider for SqlServer" type="System.Data.SqlClient.SqlClientFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add name="SQL Server CE Data Provider" invariant="Microsoft.SqlServerCe.Client" description=".NET Framework Data Provider for Microsoft SQL Server 2005 Mobile Edition" type="Microsoft.SqlServerCe.Client.SqlCeClientFactory, Microsoft.SqlServerCe.Client, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /></DbProviderFactories>
</system.data><system.web>
<processModel autoConfig="true" /><httpHandlers />
<membership><providers>
<add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="LocalSqlServer" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="true" applicationName="/" requiresUniqueEmail="false" passwordFormat="Hashed" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="7" minRequiredNonalphanumericCharacters="1" passwordAttemptWindow="10" passwordStrengthRegularExpression="" /></providers>
</membership><profile>
<providers><add name="AspNetSqlProfileProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Profile.SqlProfileProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</providers></profile>
<roleManager><providers>
<add name="AspNetSqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /><add name="AspNetWindowsTokenRoleProvider" applicationName="/" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</providers></roleManager>
</system.web>

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Data Access :: JDBC Connection Is Not Using Username Passed In Connection String

Sep 16, 2015

I am using sqljdbc41.jar to connect with MSSQL database, it is working fine on my local machine.Where as on the remote server, same class giving me error

Login failed for user '<domain><windows loginID>'
My connection string is URL...

I am using sqljdbc41.jar  and on 64 bit processor , I am using following command which included path for sqljdbc_auth.dll java -Djava.library.path= C: sqljdbc_4.1enuauthx64 TestDao and error is Login failed for user '<domain><windows loginID>' why it is not picking up username passed in connection string. I have 2 machines, one is local and other is remote. on both machine I login using my domain, it is working absolutely fine on local then why the error is coming on remote machine.Both the machines are identical.

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The Connection Name 'name' Was Not Found In The Applications Configuration Or The Connection String Is Empty

Jan 18, 2008

I have been trying to host my website on Go Daddy for about 3 weeks and I have cleared several problems but this one remains. I can get into the ASPNETDB database for doing logins , etc but I cant access my database called "PINEmgt".
To try to understand where the problem is located,I built a very simple application without login controls and put on it one Detailform accessing a single line table "Signin". I continually get the error message I got with my real app :"The connection name 'PINEMgtConnectionString2' was not found in the applications configuration or the connection string is empty. " There is only one connection string in my app -'PINEMgtConnectionString2'. When I run the app locally on my machine it works. After I move everything to Go Daddy, I get the error message and the following dump"





Line 24: </Fields>
Line 25: </aspetailsView>
Line 26: <aspqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStringsINEMgtConnectionString2 %>"
Line 27: InsertCommand="INSERT INTO Signup(first_name, last_name, email, customer_id) VALUES (,,,)"
Line 28: SelectCommand="SELECT * FROM [Signup]"></aspqlDataSource>

This is indeed the code from my single page app.

The dump is:




[InvalidOperationException: The connection name 'PINEMgtConnectionString2' was not found in the applications configuration or the connection string is empty.]
System.Web.Compilation.ConnectionStringsExpressionBuilder.GetConnectionString(String connectionStringName) +3039085
ASP.default_aspx.__BuildControlSqlDataSource1() in d:hostinguck7scoutDefault.aspx:26
ASP.default_aspx.__BuildControlform1() in d:hostinguck7scoutDefault.aspx:10
ASP.default_aspx.__BuildControlTree(default_aspx __ctrl) in d:hostinguck7scoutDefault.aspx:1
ASP.default_aspx.FrameworkInitialize() in d:hostinguck7scoutDefault.aspx.vb:912306
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +40
System.Web.UI.Page.ProcessRequest() +86
System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +18
System.Web.UI.Page.ProcessRequest(HttpContext context) +49
ASP.default_aspx.ProcessRequest(HttpContext context) +29
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +303
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64


After Googleing, asking Go Daddy for info (which they dont give) , etc for three weeks, I need serious mental help
in the form of a solution of this problem. Your help with the problem or the name of a good mental health professional in eastern N.C. (maybe both) would be appreciated.

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The Connection Name 'name' Was Not Found In The Applications Configuration Or The Connection String Is Empty

May 30, 2008



I have seen another thread with this same problem, but the problem seemed to be a typo. I am getting an error when I try to access the web site ..


The connection name 'USASH-AS0013' was not found in the applications configuration or the connection string is empty.

However, in my web.config file I do have a connection named USASH-AS0013. Here is my web.config file (with my user/pwd hidden). Any help would be greatly appreciated.



<?xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
WindowsMicrosoft.NetFrameworkv2.xConfig
-->
<configuration>
<appSettings/>
<connectionStrings>
<add name="USASH-AS0013" connectionString="Provider=SQLOLEDB;Data Source=USASH-AS0013;User ID=****;Password=*****;Initial Catalog=&quot;Smart Factory&quot;"
providerName="System.Data.OleDb" />
</connectionStrings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.

Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
-->
<compilation debug="true" strict="false" explicit="true"/>
<pages theme="MySkin" >
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
</pages>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.

<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
</system.web>
</configuration>

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SQL Server 2008 :: Connection Manager Not Using Connection String Value

Feb 19, 2015

I have a child package where the ConnectionString property of a Connection Manager is set by a Parent Package Variable Configuration. I set up a script task that brings up a message box with the value of the ConnectionString property right before the dataflow task.

MessageBox.Show(Dts.Connections["CPU_*"].ConnectionString.ToString());When I run the parent package, the message box shows that the connection string is changing with every iteration, but in the dataflow it always draws the data from the same source.

The connection manager is an ADO.Net type, RetainSameConnection is set to False, and I've been researching this for days.

(Update 2/23/2015): To make this stranger, when I look at the diagnostic logs, they tell me that when the new connections are being opened they are using the new connection strings.

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Cannot Set Connection String For Bulk Insert Source Connection

Jan 4, 2006

I came across something strange today. I was wondering I was doing something wrong.

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Edit Connection Manager Connection String At Runtime With C#

Jul 3, 2007

This is the first time I have used SSIS, so please bear with the ignorance.



I have a super simple package that inserts x000's of rows into a temporary table. The data source is a file that the user will upload. I need to be able to tell the package what file to upload. I'm thinking the simplest thing would be to edit the connectionString property of the SourceConnectionFlatFile at runtime. Is this possible? What form should the file path be in (UNC, other)? And, are there any other considerations I should be aware of?



Thanks!

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SqlCeConnection Guidelines - Keep It Open?

Feb 16, 2006

What is exactly the recommended way of using a SqlCeConnection object in your application?

In all the examples I see (IBuySpyDelivery for example) it opens the connection object in the constructor and leaves it open most of the time until the class gets disposed.

Is that the way to do it? Or should you open and close the connection for each database action (insert/select/delete) you're doing on the local SQL Mobile database?

I'm a bit confused, but maybe I'm messing up the way of working on remote database servers with how it should be done on a local SQL Mobile db.

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Open SqlCeConnection From An ASP.NET Web Service?

Aug 9, 2006

Help!

I am trying to implement a web service that creates and populates a SQL Mobile database file, then returns the created database to a mobile device as a byte array. The database size could be in excess of 500,000 rows, which is why I want to do as much of this preprocessing on the server before it gets to the mobile device. I can't use replication since I have to do some shaping of the data before I can use it on the mobile device.

Unfortunately, the web service is throwing the following exception when I try to instantiate a SqlCeConnection object:

"System.NotSupportedException: SQL Server Everywhere Edition is not intended for ASP.NET development."

Are there any suggestions as to how I can get around this potential limitation? If I refactor out the code that actually performs the SqlCe operations to a separate assembly, but still call that assembly from within the ASP.NET process, will I get the same error?

I know that you can work with Sql Mobile databases from the deskop, and I suppose I could invoke a console application to create the database, but that seems like such a hack.

Thanks for any advice,

Matthew

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Memory Leak +SqlCeConnection

Feb 27, 2007

Hi, there;
I have a couple of issue that really frustrates me. I asked a similar question before but I haven't resolved it yet.
My application was developed with VS2003, c#,CF1.0,Sp1.

I found that after my application runs for a couple of hours, my SqlCeDataAdapter.Fill() method throw exception "Error Code: 8007000E Message : Not enough storage is available to complete this operation.". I found a couple of threads on the website said that I have to dispose adapter object (including its command objects.) Yes, I did!!!. And I also dispose my SqlCeConnection before it is out of range and recreate it when I need it. See:http://www.tutorials-se.com/sqlserverce/Keeping-SqlCeConnection/

I also introduced hotfix from http://support.microsoft.com/Default.aspx?kbid=827837.
It looks like I tried everything, but I still has this exception.

At the same time, From thread "http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=426640&SiteID=1", Mr. Ilya said "native DLL (e.g. bar code scanner API) " could cause AV (access violation) issue. Yes, my application is running on Symbol 9062B device which use barcode scanner API, sometimes application will have "0xc0000005" exception when it exists (not when it is running)
A serious problem is that the laser randomly crash in the middle of the scanning without any exception. I am quite sure it is not code logic issue. This happens since I introduced two SqlCeConnections which point to two different .sdf files (run at background threads).
My impression is that the memory or stack are corrupted for some reason.

Hopefully I make myself clear.
So my question is:
1. Will Sp3 help this? (Of course I will do some test)
2. How can I know memory or stack are corrupted/How to trace.

Again, thanks Mr.Ilya, you do a great job here, you are really really helpful!

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Why Does SqlCeConnection.Dispose() Invoke GC.WaitForPendingFinalizers()?

Jan 30, 2008

I've got an application uses a WPF GUI, is built in VS2008 final, targets .Net Framework 3.5, and uses a Sql Ce 3.5 database for local storage. After a specific WPF window is rebound the application hangs. Hitting pause on the debugger reveals the offending method is a call to SqlCeConnection.Dispose(). Via Reflector I can see this method calls SqlCeConnection+ObjectLifeTimeTracker.Close() which in turn calls GC.WaitForPendingFinalizers(). Within WPF there are some objects (specifically TextBox) which need to have their resources freed on the main application thread. The finalizer thread is waiting on the main application thread, which is in turn waiting on the finalizer thread, resulting in a deadlock.

You can see some additional discussion of the topic including our temporary resolution in this thread.

My question is why is there a call to GC.WaitForPendingFinalizers() buried within the SqlCeConnection.Dispose() call tree?

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Application Hangs On SqlCeConnection.Dispose()

Jul 11, 2006

Hi,

I'm having the problem that my application hangs on SqlCeConnection.Dispose() when I'm closing the app.

public class DatabaseManager : IDisposable
{
private DbConnection connection = null;

// Singleton
private DatabaseManager()
{
this.CreateConnection();
}

~DatabaseManager()
{
this.Dispose();
}

public void Dispose()
{
if (this.connection != null)
{
this.connection.Dispose();
}
}
// ...
}

This only happens when I'm calling Application.Exit(); and Dispose is called through the destructor of the DatabaseManager class. When I'm disposing the connection during normal work the call works as intended. BTW I'm using SQL Server Mobile 3.0.5214.0 on a PPC 2003 AKU2 (Symbol PPT8846 industrial device).



Thanks for support,
Klaus

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Permission Denied When Calling Open On SqlCeConnection

Dec 4, 2007

I'm having a problem where I am getting a "Permission denied" exception when I call Open on a SqlCeConnection object using SqlCE version 3.5. It does this when mode is set to Read Only in the connection string. Furthermore it does this on XP, but not Vista. Here is the connection string I'm building:

string connectionString = "Data Source='" + fileName + "';password=" + DBPassword + ";mode='Read Only';Temp File Directory='" + Path.GetTempPath() + "'";

A prompt response with a resolution to this would be greatly appreciated.

Ron

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Variable Connection String For OLE DB Connection

May 15, 2007

Good Morning,



I hope that I am just missing a step in the process somewhere. I have established a string variable called DatabaseServer and another called DatabaseName. In the OLE DB connectionstring expression I have the following:




Code Snippet

"Data Source=" + @[User::DatabaseServer] + ";Initial Catalog=" + @[User::DatabaseName] + ";Provider=SQLNCLI.1;Integrated Security=SSPI;Auto Translate=False;"



My understanding is that changing the variable from SERVERA to SERVERB should repoint the connection. (Test to pre-production to production in my current promotion environment.) This should also take effect in any dataflow task using the database connection above right? When I try to repoint the server variable (and only the server variable) I am either a.)throwing errors saying the original connection cannot be found in the data flow task, or b.)the job appears to be processing fine, but the repoint did not take place and data is still flowing to the original server.



Can anyone offer suggestions as to what I am missing?



The properties values in the DB connection:

ConnectionManagerType is OLEDB

DataSourceID is blank

DelayValidation is False (Setting to true changes nothing in my test)

Expression for ConnectionString is (see above)

RetainSameConnection is False

SupportsDTCTTransactions is True (and appears to be unchangeable.)

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Problem In Reading The Line Public Mycon As New Sqlceconnection

Feb 19, 2008



Hi Frndz

I am facing a problem with vb.net application which i created to connect with and sqlservermobile edition file (.sdf).
while the connection is declared, its producing the error that "Exception from Hresult : 0x4007000B." and some inner exception error lines.
i imported system.data.sqlceserver and added the references too.

but It is working in my one of the system. i tried the same in some other system,its not working. you frndz have any about this. I think the system is lacking some dll files. any body having an idea about this. pls help me out.

Nahas

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SQLCeconnection On Visual Basic And Insert Data On A Listbox

Nov 13, 2007



Hi

I am developing a program on Visual Basic 2005 to a pocket pc, I want to make the SQLceconnection but It says that the file doesn´t exists, I use this code:


Dim conn As New SqlCeConnection()

Dim Recordset As SqlCeDataAdapter

Dim SQL As String

Dim ds As New DataSet

conn.ConnectionString = _

"Data Source = '.BDDclimatologicos.sdf';"

conn.Open()

SQL = "select [Provincia] from ZonasClimaticas"

Recordset = New SqlCeDataAdapter(SQL, conn)

Recordset.Fill(ds, "ZonasClimaticas")

lstboxProvincias.DataSource = ds.Tables("ZonasClimaticas").DefaultView


I have Dcilmatologicos.sdf on a folder named BD next to the folder of the executable, I don´t know what happends.

My database has one table "ZonasClimaticas" and a column named "Provincia" on that, my other question is:

Is this the right code to show that column on a listbox?

Thank you very much!

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Is It Bad Practice To Leave A SqlCeConnection Open Through The Duration Of A Mobile Application?

Jan 24, 2008

I know that with traditional SQL systems, it is important to only open connections to a sql server when they are needed. However, since there is no "server" in mobile apps, is it bad practice to leave one open throughout the duration of an application?

The application is going to be constantly reading and writing to the data tables and it seems like it might be a good idea to leave it open.

Thanks!

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HELP: SqlCeConnection Path Error In .NET Compact Framework (Pocket PC Emulator)

Apr 4, 2007



Hi all,



I am trying to access my SQL Server database through SqlCeConnection:



cecon = new SqlCeConnection("Data Source=D:\D_Drive\csharppract\nddbpda\nddbpda\nddbpdadatabase.sdf");

cecon.Open();



I am getting the following error:



System.Data.SqlServerCe.SqlCeException was unhandled
Message="The path is not valid. Check the directory for the database. [ Path = D:\D_Drive\csharppract\nddbpda\nddbpda\nddbpdadatabase.sdf ]"
HResult=-2147467259
NativeError=25009
Source="SQL Server 2005 Mobile Edition ADO.NET Data Provider"
StackTrace:
at System.Data.SqlServerCe.SqlCeConnection.ProcessResults()
at System.Data.SqlServerCe.SqlCeConnection.Open()
at System.Data.SqlServerCe.SqlCeConnection.Open()
at nddbpda.frmCeMain.frmCeMain_Load()
at System.Windows.Forms.Form.OnLoad()
at System.Windows.Forms.Form._SetVisibleNotify()
at System.Windows.Forms.Control.set_Visible()
at System.Windows.Forms.Application.Run()
at nddbpda.Program.Main()





When I tried to get the path from which the database file is being accepted, I got a different path:



string path;

path = System.IO.Path.GetDirectoryName(

System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);

MessageBox.Show(path);



This code gives me this path:



Program Filesddbpda





Then I changed the path in my connection string to this:



cecon = new SqlCeConnection("Data Source=\Program Files\nddbpda\nddbpdadatabase.sdf");

cecon.Open();



When I ran my application it worked (virtually), but the database is not getting updated (for obvious reasons).





What should I do now to correct this?



Thanks in advance.

Saswata.



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HELP: SqlCeConnection Path Error In .NET Compact Framework (Pocket PC Emulator)

Apr 4, 2007



Hi all,



I am trying to access my SQL Server database through SqlCeConnection:



cecon = new SqlCeConnection("Data Source=D:\D_Drive\csharppract\nddbpda\nddbpda\nddbpdadatabase.sdf");
cecon.Open();




I am getting the following error:



System.Data.SqlServerCe.SqlCeException was unhandled
Message="The path is not valid. Check the directory for the database. [ Path = D:\D_Drive\csharppract\nddbpda\nddbpda\nddbpdadatabase.sdf ]"
HResult=-2147467259
NativeError=25009
Source="SQL Server 2005 Mobile Edition ADO.NET Data Provider"
StackTrace:
at System.Data.SqlServerCe.SqlCeConnection.ProcessResults()
at System.Data.SqlServerCe.SqlCeConnection.Open()
at System.Data.SqlServerCe.SqlCeConnection.Open()
at nddbpda.frmCeMain.frmCeMain_Load()
at System.Windows.Forms.Form.OnLoad()
at System.Windows.Forms.Form._SetVisibleNotify()
at System.Windows.Forms.Control.set_Visible()
at System.Windows.Forms.Application.Run()
at nddbpda.Program.Main()






When I tried to get the path from which the database file is being accepted, I got a different path:



string path;
path = System.IO.Path.GetDirectoryName(
System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);
MessageBox.Show(path);






This code gives me this path:



Program Filesddbpda






Then I changed the path in my connection string to this:



cecon = new SqlCeConnection("Data Source=\Program Files\nddbpda\nddbpdadatabase.sdf");
cecon.Open();






When I ran my application it worked (virtually), but the database is not getting updated (for obvious reasons).





What should I do now to correct this?



Thanks in advance.



Saswata.

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