Hello,
I'have this SyBase and SQL Server example update query:
UPDATE Table1 SET
Table1.Col1 = Table2.Col1 + Table2.Col2
Table1.Col2 = -1
FROM Table2
WHERE Table1.Id = Table2.Id
If i try to execute this query under SqlServerCE 2.0 i get this error message:
Native Error:(25501)
Description: There was an error parsing the query.
How can i write this query for running it under SqlServerCE 2.0?
Many Thanks in advance!!!
Mauro
Hi,
we just migrated to SqlServerMobile 3.5. My first experience is that Version 3.5 is much slower than 3.1.
I upgraded and compacted an existing Database. Is it recommended to create a new database, instead?
Has anybody else the feeling that Version 3.5 is slower?
Are there any settings to speed up the database.
Many thanks,
Stefan
Hi,
I am trying to make a mobile application work, but I get the following error. The operating system on Pocket PC is Microsoft® Windows Mobile„¢ 2003 Second Edition. Any ideas? Thanks in advance.
The followings are the error and my codes:
System.TypeLoadException was unhandled
Message="Could not load type 'System.Data.SqlServerCe.SqlCeDataAdapter' from assembly 'System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91'."
StackTrace:
at SQLMobile.Form1.Form1_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 SQLMobile.Form1.Main()
Codes:
Private Sub FillGrid()
Dim filename As New String _
("Program FilesSQLMobilesqlmobile.sdf")
Dim conn As New SqlCeConnection("Data Source=" + filename)
Dim selectCmd As SqlCeCommand = conn.CreateCommand()
selectCmd.CommandText = "select Destination from flightdata"
Dim adp As New SqlCeDataAdapter(selectCmd)
Dim ds As New DataSet()
adp.Fill(ds)
DataGrid1.DataSource = ds
End sub
Hello, Iam devloping a product for a mobile unit using Windows mobile database. (*.sdf)
Is it possible from other form applictions, such as ordernary Windows forms ?
Have a wonderful day!
hi,
i was facing problem in sqlceserver connection, the coding i had code as below, it's return an error message "Procedure Call or Argument is not valid". i was study this issue for 2 days, but i am still can't found out the cause of issue, can anyone please point out the mistake i had made? Thank.
Module Module1
Public Const local_DatabaseFile As String = "My Documents esting.sdf"
Public conn As SqlCeConnection
Dim cmd As SqlCeCommand
Public myReader As SqlCeDataReader
Public mySelectQuery As String
-----------------------------------------------------------------------
Form1
Function Check_Code()
Try
' On Error Resume Next
builtConnStr()
If conn.State = ConnectionState.Open Then
conn.Close()
End If
mySelectQuery = "SELECT * FROM Product " & _
"WHERE Item_Code = '" + txtCode.Text + "' "
conn.Open()
Dim myCommand As New SqlCeCommand(mySelectQuery, conn)
myReader = myCommand.ExecuteReader()
' Always call Read before accessing data.
If myReader.Read() Then
txtName.Text = myReader.GetString(1)
End If
myReader.Close()
conn.Close()
Catch ex As Exception
MsgBox(Err.Description)
End Try
End Function
------------------------------------------------------------------------------
Public Sub builtConnStr()
Try
Dim local_ConnString As String
local_ConnString = "Data Source= " & local_DatabaseFile
If conn Is Nothing Then
conn = New SqlCeConnection(local_ConnString)
conn.Open()
cmd = conn.CreateCommand()
End If
Catch ex As Exception
MsgBox(Err.Description)
End Try
End Sub
I registered to redistribute the runtime for SQL Server Compact edition.
I have a desktop application which uses SDF files as the database.
In VS 2008 - when I set System.Data.SqlServerCe configured to Copy Local as TRUE - sqlserverce.dll does not get inserted to my bin directory. I am assuming if I manually put the DLL file into my bin directory (and deploy it) - the DLL file will automatically be used by my app?
Does anybody know if sqlserverce's license is freeware or shareware??
thanks a lot!
I have developed a smart device application using SqlServerCE that replicates data to the backend server. I need to provide to the user a status of this replication process. I read about the "MergeSubscriberMonitor" in SQL Server but can't find it in SqlServerCe. Is this possible? Can someone please point me in the right direction?
View 6 Replies View RelatedI have successfully converted a MSVS 2005 Winforms Application into the MSVS 2008 beta 2. I am however having trouble getting the winmobile data tables to fill. The ODBC Paradox tables fill fine. When I converted the application I had to re create the win mobile datasource for the project. So I used the datasource wizard in 2008, it opened the winmobile5 database and told me that I would need to convert the database to 3.5. I let it overwrite the existing database and it created a new .xsd file for me for the project. When I try to load data into the database tables
this.proceduresTableAdapter.Fill(this.fB7MobileDBDataSet.Procedures);
I get the native error 28609
You are trying to access an older version of a SQL Server Compact 3.5 database. If this is a SQL Server CE 1.0 or 2.0 database, run upgrade.exe. If this is a SQL Server Compact 3.5 database, run Compact/Repair.
I have run Compact but not repair, and still get the same error.
1. What could be left in the project that ismaking it expect to open the 3.0 database instead of the 3.5 that was converted in the datasource wizard?(If I substitute an older database file I get the native error 25010 Invalid File Name. Check the database filename. )
2. Is there a way after you convert a project to then add a datasource to the project that would use the same xsd file and datasetDesigner.cs from before the conversion ?
Thanks Jon Stroh
Sorry being a little vague but if you can point me in the right direction.
I have just created a new VB €“ Windows Mobile 5.0 pocket PC €“ Device Application. (which will be connected to a PDA)
Do i have to use System.Data.SqlServerCe or System.Data.SqlClient to connect to my db.
I have an open connection object in my mobile app. I noticed that whenever I use this to do Insert into my DB the memory in use by the application increase everytime and does not get released until I close down the app (or if I close and dispose the connection object = which I dont want to do really). Just 40 inserts will take up serveral MB of memory.
Any ideas on this?
Using version 3.0.3600.0
Some sample code (cnn is a public variable SqlCeConnetion):
Dim cmdText As String = "INSERT INTO MyTable (theName, theValue) VALUES ( 'Name','Value')"
Try
Dim cmd As SqlCeCommand = New SqlCeCommand
cmd.Connection = cnn
cmd.CommandText = cmdText
cmd.ExecuteNonQuery()
Catch
End Try
cmdText = "SELECT @@Identity"
Try
Dim cmd As SqlCeCommand = New SqlCeCommand
cmd.Connection = objCnn
cmd.CommandText = strCmd
.Id = cmd.ExecuteScalar
Catch
End Try
Is it possible to talk to a SQLServerCE database from a vbs script? If so, does anyone have an example?
Thanks,
Mike
I believe I've encountered a compatability problems with Visual Studion CF 2, specifically with the System.Data.SQLServerCE reference when trying to run (in debug mode - Pocket PC 2003 emulation). The environment is configured as follows:
Visual Studio 2005 - Compact Framework 2.0.50727
Microsoft SQL Server 2005 Mobile Edition
The (VB) project includes the following references:
System.Data.dll V2.0.000 from Program FilesMicrosoft Visual Studio 8Smart DevicesSDKCompact Framework2.0V2.0WindowsCE
System.Data.SqlServerCE.dll V3.0.5214.0 from Program FilesMicrosoft SQL Server Mobile EditionDeviceMobileV3.0
The IDE does not sense any problems with the following code until I try to run it in debug mode using the Pocket PC 2003 emulator. The code :
Imports System
Imports System.IO
Imports System.text
Imports System.Data
Imports System.Data.SqlServerCe
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
MsgBox("Will Test SQL")
Call testSQL()
End Sub
Private Sub testSQL()
Dim strConn As String = "Data Source = Test.sdf; Password = <password>"
Dim CEEngine As New SqlCeEngine(strConn)
CEEngine.CreateDatabase()
CEEngine.Dispose()
Dim Conn As SqlCeConnection = Nothing
Conn = New SqlCeConnection(strConn)
Conn.Open()
Dim cmd As SqlCeCommand = Conn.CreateCommand
cmd.CommandText = "CREATE TABLE MyTable (col1 int, col2 ntext)"
cmd.ExecuteNonQuery()
Conn.Close()
Exit Sub
ErrHandler:
MsgBox(Err.Number.ToString)
MsgBox(Err.Description.ToString)
End Sub
In the debugger, the program terminates at Dim CEEngine As New SqlCeEngine(strConn). The message displayed is
Can't find PInvode DLL 'sqlceme30.dll'
I've tried referencing a different version of System.Data.SqlServerCE.dll (from Program FilesMicrosoft SQL Server90ToolsBinnVSShellCommon7IDE but the program will not even deploy to the emulator with this reference.
I encounter a Deployment/and or registration failed wit error : 0x8973190e - There is not enough space on the disk.
What versions of the following should be used?
System.dll
System.data.dll
System.data.sqlserverce.dll
I have a VB.net 2005 application that uses both System.Data.SqlClient and System.Data.SqlServerCe which has worked on PC2003 handhelds but falls over in Windows Mobile 5. It seems to be when I have used a SqlClient connection and then use ExecuteNonQuery on the local sdf file - the application just bombs out - no error message, nothing.
Weirdly, if I am connected to a CE database through Query Analyzer 3.0 at the same time as running this application, everything works fine. Do I need to 'initialize' something that Query Analyzer seems to be doing in order to make this work?
Most grateful for any ideas.
Thanks
Chris
Hello,
I've inherited a .NET CF 2.0 application at work that uses SQL CE, and as I'm digging into the build process, I'm getting confused about which version of SQL CE that is being used.
The project references System.Data.SqlServerCe (no hint path, just from wherever VS 2005 has it). When I look at the assembly in my project, the version shows up as 3.0.3600.0, but when I browse to the DLL's location on my hard drive (C:Program Files (x86)Microsoft Visual Studio 8SmartDevicesSDK\SQL ServerMobilev3.0System.Data.SqlServerCe.dll), right click the DLL and check the properties, the version shows up as 3.0.3600.0.
In our installation package, we install three SQL CE Cabs:
sqlce30.dev.ENU.ppc.wce5.armv4i.CAB
sqlce30.ppc.wce5.armv4i.CAB
sqlce30.repl.ppc.wce5.armv4i.CAB
When installed on the device, the Remove Programs dialog shows as "Microsoft SQL Mobile 2005..." is installed. We keep the cabs in a seperate location so they are not just pulled from anywhere on the hard drive.
However, when I install the same CAB files located at:
C:Program Files (x86)Microsoft Visual Studio 8SmartDevicesSDKSQL ServerMobilev3.0wce500armv4i, the device shows "Microsoft SQL Mobile 2005 Compa...." is installed.
In my Add References dialog, System.Data.SqlServerCe has version 3.0.3600.0, runtime v2.0.50727
Some questions:
1. Is the version 3.0.3600.0 the same between 3.0 and 3.1?
2. Given a System.Data.SqlServerCe DLL, how can I tell if it is the 3.0 or 3.1 version?
3. When upgrading my project to use 3.1, is it enough simply to upgrade my build environment? Or should I need to change the references in my project? (It appears that the 3.1 DLLs have been placed into the default locations where VS 2005 is pulling them from). I'm using VS 2005 SP1 on Vista x64.
Thanks
Hello All ...
I
am attempting to create a program that will run on the PocketPC 2003
environment. I have upgraded Visual Studio to SP1, I have installed SQL
Server Compact Edition on my development machine and I have installed
SQL Server Compact Edition Tools For Visual Studio on the development
machine.
I have created a new project Visual Basic - Smart
Device - Pocket PC 2003. I have created a form for user input. I build
and deploy the form to the Symbol Pocket PC to test - no connection to
data and it works.
I then add a reference to
System.Data.SqlServerCE.dll and rebuild and redeploy the application to
the handheld. When I attempt to open the form I receive the following
error:
psmPocket.exe
NotSupportedException
System.Drawing.Bitmap
at
System.Resources.ResourceReader.LoadObjectV2() at
System.Resources.ResourceReader.LoadObject() at
System.Resources.RuntimeResourceSet.GetObject() at
System.Resources.ResourceManager.GetObject() at
System.Resources.ResourceManager.GetObject() at
pmsPocket.frmSetSOPType.InitializeComponent() at
psmPocket.frmSetSOPType..ctor() at
System.Reflection.RuntimeContructorInfo.InternalInvoke() at
System.Reflection.RuntimeContructorInfo.InternalInvoke() at
System.Reflection.ContrcutorInfo.Invoke() at
System.Activator.CreateInstance() at MyForms.Create__Instance__() at
MyForms.get_frmSetSOPType() at psmPocket.SetSOPType.Main()
Now
the confusing part is that I haven't changed any of the forms or the
code behind the forms, I have simply added the reference to the project.
Any idea why adding the reference to System.Data.SqlServerCE.dll would cause the system to start generating these errors?
I've
checked, the install process has loaded the .NET 2 framework to the
handheld. And as indicated at the beginning of this message, the
application showed the form prior to my adding the reference.
Thoughts?
Thanks ...
I'm using SQL Server Compact Edition, but in the future I would like to be able to switch to another SQL Server Edition or even a different database. To achieve this, Microsoft recommends using DB Provider Factories (see: Writing Provider Independent Code in ADO.NET, http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=674426&SiteID=1).I enumerated the available data providers on my PC with:
Code Snippet
System.Reflection.Assembly[] myAssemblies = System.Threading.Thread.GetDomain().GetAssemblies();
The important entry is:"SQL Server CE Data Provider"".NET Framework Data Provider for Microsoft SQL Server 2005 Mobile Edition""Microsoft.SqlServerCe.Client""Microsoft.SqlServerCe.Client.SqlCeClientFactory, Microsoft.SqlServerCe.Client, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"When executing:
Code SnippetdataFactory = DbProviderFactories.GetFactory("System.Data.SqlServerCe");
I got at first this error run time message: Failed to find or load the registered .Net Framework Data Provider.I added a reference to "Microsoft.SqlServerCe.Client" at C:ProgrammeMicrosoft Visual Studio 8Common7IDEMicrosoft.SqlServerCe.Client.dll and the program runs.Of course, it uses "Microsoft.SqlServerCe.Client" instead of "System.Data.SqlServerCe". Laxmi Narsimha Rao ORUGANTI from Microsoft writes in the post "SSev and Enterprise Library" that "Microsoft.SqlServerCe.Client" is not meant to be used and that we should add the following entry to the machine.config file:
Code Snippet<add name="SQL Server Everywhere Edition Data Provider" invariant="System.Data.SqlServerCe" description=".NET Framework Data Provider for Microsoft SQL Server Everywhere Edition" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
After changing the code to:
Code Snippet
dataFactory = DbProviderFactories.GetFactory("Microsoft.SqlServerCe.Client");
I get the same error message as before, even after adding a reference to "System.Data.SqlServerCe" at C:ProgrammeMicrosoft Visual Studio 8Common7IDESystem.Data.SqlServerCe.dll.Any suggestion what I should do ? Just use "Microsoft.SqlServerCe.Client" ? Anyway, I don€™t like the idea that I have to change the machine.config file, since I want to use click once deployment.
hi,
We are facing a problem with compact framework 1.0 and SQL CE on windows mobile 5.0 smart phone (Motorola Q).
The application was build for Windows Mobile 5.0. When we use €œSystem.Data.SQLServerCE.dll€? from €œC:Program FilesMicrosoft Visual Studio 8SmartDevicesSDKSQL ServerMobilev3.0€? in compact framework 2.0 it works fine.
Since Motorola Q has .Net Compact Framework 1.0 we need to port same application to compact framework 1.0. There is similar DLL in "C:Program FilesMicrosoft Visual Studio 8SmartDevicesSDKSQL ServerMobilev2.0" but it is not working, it gives runtime error missing method at very first line of code SqlCeEngine _eng = new SqlCeEngine().
Thanks & regards,
Rashmi
Hi! I am having a problem getting the inserted id from a table.
Here is the table:
/*********************** Companies **********************************/
CREATE TABLE Companies(
CompanyId int IDENTITY(1,1) PRIMARY KEY,
Description nvarchar(30) NOT NULL
)
GO
When I type SELECT @@IDENTITY in SQL Management Studio after a successful insert, it works fine. However, in code (System.Data.SqlServerCe), I get an error using this code:
SqlCeCommand cmd = conn.CreateCommand();
cmd.CommandText = sql;
cmd.CommandType = System.Data.CommandType.Text;
ret = (int)cmd.ExecuteScalar();
I saw a thread with this solution, but do I really have to go to this trouble?
DECLARE @MyTable table
( MyIdentity int )
INSERT INTO Employees ( FirstName, LastName )
OUTPUT inserted.EmployeeID INTO @MyTable
VALUES ( 'Bill', 'Smith' )
SELECT MyIdentity
FROM @MyTable
scope_identity does not seem to work either. Am I missing something?
Thanks!
Michael
Hi
i have the following problem :
i attempted to connect with a SQLServerCE DataBase
to Insert and update its rows, but i noticed that i want the reference :
System.Data.SqlServerCe
i went to (Add references) but i didn't find it ..
what should i do to break this problem ?
please help me !
Hello
I have referrenced System.Data.SqlServerCE.dll to my web project in order to create a .sdf file. I haven't wrote any code,just referenced it. When I build the project I get this error:
Error 2 'System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' cannot be loaded.
Hi all,
Why System.Data.SqlserverCe.Dll doesn't appear in VS2005. In VS2003 System.Data.SqlserverCe.Dll appear to write winCE application. But it won't appear in VS2005 while am selecting PocketPc application. any body gimme the solution.
Thanks
Nat Raja
Hello All ...I
am attempting to create a program that will run on the PocketPC 2003
environment. I have upgraded Visual Studio to SP1, I have installed SQL
Server Compact Edition on my development machine and I have installed
SQL Server Compact Edition Tools For Visual Studio on the development
machine.I have created a new project Visual Basic - Smart
Device - Pocket PC 2003. I have created a form for user input. I build
and deploy the form to the Symbol Pocket PC to test - no connection to
data and it works.I then add a reference to
System.Data.SqlServerCE.dll and rebuild and redeploy the application to
the handheld. When I attempt to open the form I receive the following
error:psmPocket.exeNotSupportedExceptionSystem.Drawing.Bitmapat
System.Resources.ResourceReader.LoadObjectV2() at
System.Resources.ResourceReader.LoadObject() at
System.Resources.RuntimeResourceSet.GetObject() at
System.Resources.ResourceManager.GetObject() at
System.Resources.ResourceManager.GetObject() at
pmsPocket.frmSetSOPType.InitializeComponent() at
psmPocket.frmSetSOPType..ctor() at
System.Reflection.RuntimeContructorInfo.InternalInvoke() at
System.Reflection.RuntimeContructorInfo.InternalInvoke() at
System.Reflection.ContrcutorInfo.Invoke() at
System.Activator.CreateInstance() at MyForms.Create__Instance__() at
MyForms.get_frmSetSOPType() at psmPocket.SetSOPType.Main()Now
the confusing part is that I haven't changed any of the forms or the
code behind the forms, I have simply added the reference to the project.Any idea why adding the reference to System.Data.SqlServerCE.dll would cause the system to start generating these errors?I've
checked, the install process has loaded the .NET 2 framework to the
handheld. And as indicated at the beginning of this message, the
application showed the form prior to my adding the reference.Thoughts?Thanks ...
Hi All
I have a problem when trying to create reports using Crystal Reports and SQL Server Compact 3.5. The report displays the Column Headers but no information. Is there any good walk throughs for creating reports from SQL Server Compact 3.5 using Crystal Reports.
Thanks
John
I am trying to use SQL Mobile 2005 with Visual Studio 2005. I have a simple sql mobile db i created and am trying to test connectivity to the DB in a simple app. I added the reference to the SqlServerCE and the verison # that is shown in properties is 3.0.3600.0, but when i look at the physical DLL in explorer (found at C:Program FilesMicrosoft Visual Studio 8SmartDevicesSDKSQL ServerMobilev3.0) the version # is 3.0.5206.0, so when i compile and run the test, I get :
View 7 Replies View RelatedHow can I tell if the System.Data.SqlServerCe assembly I am referencing is meant for Desktop use as opposed to Compact development? We are using NUnit as our testing framework and I get the following error when I attempt to execute nunit-console on my test fixture referencing SqlServerCe:
System.IO.FileLoadException : Could not load file or assembly 'System.Data.SqlServerCe, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) ---->
System.IO.FileLoadException : Could not load file or assembly 'System.Data.SqlServerCe, Version=3.0.3600.0, Culture=neutral, PublicKeyToken=3be235df1c8d2ad3, Retargetable=Yes' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
The unit tests run fine from inside of Visual Studio using the Resharper Unit Test Runner...
Matt
Hi,
I am working on a .dll which need to access .sdf ( sql server mobile db). In my project, I added a reference "System.Data.SqlServerCe.dll". The dll is located in C:Program FilesMicrosoft Visual Studio 8Common7IDE.
I am able to compile the project. Then I created a Unit project for this dll file. In Unit project, I added the same reference.
Now the magic things happen. The compiling was failed. I got "Error 1 The type 'System.Data.Common.DbConnection' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. C:VS2005MobileDBUnitMobileDBProjectUnitMobileDB.cs 50 13 UnitMobileDBProject".
I don't understand how come the same .dll could pass in a dll project but failed in unit test project. And I never saw the System.Data.SqlServerCe display in ".Net" Section of Add reference. But in my office, I installed same version of VS2005 for software tester. I could see the System.Data.SqlServerCe display in the ".Net" section of Add Reference.
Please help me to fix this problem. Thanks.
I made a merge replication and sucessfully connected with mobile device. Everything works fine. Because I wanna try asynchronous synchronization (which won't stop my application executing when subscribing) I read How to example from MSDN :
http://msdn2.microsoft.com/en-us/library/ms172391.aspx
But there is a problem with creating SyncStatus class object. I can't get into it and I can't create. maybe some reference will help? (I use reference to SQLServerCE). This error stoped my work for now, so I am waiting for some answers.
And if it's simple resolution for this problem - sorry. I just started programming applications for Mobile Devices.
Best regards. Maciek Wysocki
We have a Compact Framework 1.1 application that uses Sql Server CE 2.0. In VS2003, a reference to System.Data.SqlServerCe causes the Sql Server CE dlls and Query Analyzer to install to the Emulator or PDA.
I am currently converting the application to Compact Framework 2.0, but we are not upgrading to Sql Server Mobile (yet). However, the reference to System.Data.SqlServerCe, in VS 2005, no longer causes Sql Server CE to install to the PDA/Emulator.
There is a difference in the build outputs between VS2003 & VS2005. In 2003, System_SR_enu.cab, sqlce.wce4.x86.cab & sqlce.dev.wce4.x86.cab are copied & lanuched. In 2005, only System_SR_enu.cab is copied... no launch.
Any ideas? Reinstall VS2005?
We just upgraded our applications from VS 2005 to VS 2008 and discovered we had to convert our SQL Server CE databases. So I did that. I then included the sqlce...35.dlls in the application directory on my test computer as well as the System.Data.SqlServerCe.dll version 3.5.
sqlceca35.dll
sqlcecompact35.dll
sqlceer35EN.dll
sqlceme35.dll
sqlceoledb35.dll
sqlceqp35.dll
sqlcese35.dll
When I run the app and it tries to load the System.Data.SqlServerCe.dll I get the following error:
System.IO.FileLoadException: Could not load file or assembly 'System.Data.SqlServerCe, Version 3.5.0.0...or one of its dependencies. The located assembly's manifest definition does not match the assembly reference.
We have the application targeting the .NET Framework 2.0 and need to keep it that way for awhile.
Any ideas on how to resolve the error?
I came across a frustrating bug last week. Basically, whenever I tried to execute almost any sql query with unnamed parameters (i.e. using "?" instead of "@param_name" in the SQL text), an exception would be thrown.
After trying lots and lots of things and navigating my way through the internals of System.Data.SqlServerCe.dll, I discovered that the method System.Data.SqlServerCe.SqlCeCommand.CreateParameterAccessor(...) has a bug.
The bug is that the private arrays "parameters" and "metadata" are ordered differently, yet at one point in CreateParameterAccessor(...) they are compared using the same index. Here are the two lines:
p = this.parameters[ i ];
and
MetaData info = metadata[ i ]
and then the column data types of "info" & "p" are incorrectly compared in a later method, ValidateDataConversion(...).
So take a step back... how are they ordered differently? From observation, I concluded the following:
The "parameters" array is ordered exactly in the order that the DbParameter's were added to the DbCommand object.
The "metadata" array is ordered according to the column order of the table in the database.
So what causes the exception? Well, CreateParameterAccessor(...) passes data types from two different columns (one type taken from parameters[ i ] and the other from metadata[ i ]) on to SqlCeType.ValidateDataConversion(...). And, of course, if they differ (e.g. one column is of type DateTime and the other is a SmallInt), an exception is thrown.
I've found two workarounds, and both seem to work well.
The first is to name the SqlCeParameters (e.g. "SELECT ... WHERE id=@id"). This causes the buggy branch of code to be completely bypassed.
The second is to add the SqlCeParameters in the exact same order as the columns exist in the table you are accessing. Note, I do *not* mean the order that you select the columns (e.g. "SELECT column1, column2, ..."). I mean the actual order of the columns in the database.
I've included my setup and a stack trace below to help if it can.
My setup is:
.Net CF 3.5
SqlServer CE 3.5
Visual Studio 2008
Deployed to Pocket PC 2003
Here is the stack trace (note the variables passed to ValidateDataConversion):
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeType.ValidateDataConversion(System.Data.SqlDbType expectedType = DateTime, System.Data.SqlDbType actualType = SmallInt) + 0x4a bytes
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeCommand.CreateParameterAccessor(System.Data.SqlServerCe.MetaData[] metadata = {System.Data.SqlServerCe.MetaData[34]}) + 0x89 bytes
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeCommand.CreateDataBindings() + 0x5e bytes
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeCommand.CompileQueryPlan() + 0x16f bytes
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeCommand.ExecuteCommand(System.Data.CommandBehavior behavior = Default, string method = "ExecuteNonQuery", System.Data.SqlServerCe.ResultSetOptions options = None) + 0xa7 bytes
System.Data.SqlServerCe.dll!System.Data.SqlServerCe.SqlCeCommand.ExecuteNonQuery() + 0x7 bytes
Hello everyone,
This is my first time posting here, I hope this questions has not been asked before. I tried to search for it but I came not with nothing.
Recreating the error :
I am using VS2005. I created a Pocket PC 2003 project.
I have downloaded the SQL Server Compact Edition and installed it. I get the System.Data.SqlServerCe.dll file from the installation directory.
I reference to that DLL using Add Reference in VS2005.
Build it. In the Bin folder, a long list of files suddenly appears.
System.data.dll
System.data.oracleClient.dll
system.web.dll
system.enterpriseservices.dll
system.enterpriseservices.wrapper.dll
system.transactions.dll
and the rest of your original files in Bin
The worst of it all, all of these files are deployed into the Emulator! Causing it to run out of memory and unable to deploy.
Something is not right here, I just cannot figure it out! If this happens, each mobile devices can hold one applications. Thats not the way it should be, right?
If you have solved this before, do help. I am at my wits end at the moment.
Thanking you in advance.
Sincerely,
Lasker
Hi,
I am developing a Application using SQLCE Database & VS 2005 for Intermec CN3 PDA
It is having Windows Mobile 5.0 OS and ARM920T PXA27x Processor.
I have already installed
Microsoft .NET CF 2.0,
Microsoft SQL Client 2.0 ( using %Program Files%Microsoft SQL Server Compact Editionv3.1SDKinwce500armv4isqlce30.wce5.armv4i.CAB file) in PDA
I could able to run the application in the development environment which is having
Windows XP OS.
Microsoft .NET Compact framework 2.0,
SQL Server 2005 Compact edition
But when I deploy the application in the PDA thro' cab file and try to run the application I am getting the below error at run time.
Could not load type
'System.Data.Sqlserverce.sqlcecommand' from assembly System.Data.Sqlserverce, version=9.0.242.0,culture=neutral,PublickeyToken=8984...'
I have added the SQLCE.dll from the below location
%Program Files%Microsoft SQL Server Compact Editionv3.1System.Data.SqlServerCe.dll
Anybody can suggest me to solve this issue.
Thanks in advance
With Regards,
D.Karthikeyan