Posted by jpluimers on 2011/05/11
Thanks to Martin Kulov’s Blog: Any CPU vs. x86 vs. x64 I got a reference to a great article explaining this in more detail.
The obvious points are 1., 2. and 3., but it is 4..7 that makes the article really worth reading.
–jeroen
PS: a few more relevant links
http://stackoverflow.com/questions/247098/x64-net-compilation-process-explorer-oddity
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Posted by jpluimers on 2011/05/10
The FM USB Library is on my research list.
–jeroen
PS: a few raw links that might fit in:
http://www.silabs.com/usbradio / http://www.silabs.com/products/mcu/Pages/USBFMRadioRD.aspx
http://code.google.com/p/silabsradiodll/
http://parts.digikey.nl/1/1/543483-usb-fm-radio-stick-usbfmradio-rd.html
http://nl.farnell.com/jsp/search/productdetail.jsp?sku=1186925
http://www.mp3car.com/hardware-development/64550-usb-fm-rds-solution-with-sofware-40.html
http://www.mp3car.com/hardware-development/64550-usb-fm-rds-solution-with-sofware-41.html
http://usb.brando.com/prod_detail.php?prod_id=00136
http://usb.brando.com/usb-radio-ii_p1785c35d15.html
http://www.whitebream.com/p811.shtml?id=p811
http://khason.net/blog/read-and-use-fm-radio-or-any-other-usb-hid-device-from-c/
http://www.dealextreme.com/p/usb-digital-radio-receiver-dongle-fm-76-108mhz-1929
http://www.silabs.com/products/audiovideo/fmreceivers/Pages/default.aspx
http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=usb+fm+rds+site%3Amouser.com
http://www.mp3car.com/hardware-development/69493-hqct-module-new-thread-following-hu-rds-rdbs.html
http://www.mp3car.com/hardware-development/64550-usb-fm-rds-solution-with-sofware-2.html
http://www.cartft.com/catalog/il/1139
http://www.digital-car.co.uk/forum/showthread.php?12194-New-CarTFT-FM-(Automotive-USB-FM-RDS-tuner)
http://www.cartft.com/catalog/il/1017
http://btwincap.sourceforge.net/download.html
http://btwincap.sourceforge.net/supportedcards.html
http://www.alibri.it/RRMobile/Silab%20USB%20Radio.htm
http://www.mo-co-so.com/Car-TFT-FM-Tuner-with-RDS-p/mcs-tft-rad.htm
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q311272
Posted in .NET, C#, Delphi, Development, Prism, Software Development | Leave a Comment »
Posted by jpluimers on 2011/05/05
The Entity Framework needs you to have a connection string in your App.Config.
It is good practice having your Entity Framework model in a separate assembly.
When using it in your main app, be aware that the connection string that belongs to your model needs to be in the App.config of your main app.
If not, you get an exception like this:
System.ArgumentException was unhandled
Message=The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid.
Source=System.Data.Entity
StackTrace:
at System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString)
at System.Data.EntityClient.EntityConnection..ctor(String connectionString)
at System.Data.Objects.ObjectContext.CreateEntityConnection(String connectionString)
at System.Data.Objects.ObjectContext..ctor(String connectionString, String defaultContainerName)
The clue is the contents of the defaultContainerName parameter: you will see that in the App.config of your Entity Framework assembly.
Copy that over to the App.config of your main assembly, then make sure it points to your right database (if you use OTAP), then go :-)
Your App.config then looks like this:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<connectionStrings>
<add name="MyEntities" connectionString="metadata=res://*/My_EntityModel.csdl|res://*/My_EntityModel.ssdl|res://*/My_EntityModel.msl;provider=System.Data.SqlClient;provider connection string="data source=my-sql-server;initial catalog=my-database;persist security info=True;user id=my-user;password=my-password;multipleactiveresultsets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
</configuration>
–jeroen
Posted in .NET, C#, Database Development, Development, EF Entity Framework, Software Development, SQL Server | Leave a Comment »
Posted by jpluimers on 2011/05/04
The SmackFu: Shoutcast Metadata Protocol page describes how the Icecast and Shoutcast meta-data (like song title) are being sent inside their streams.
Notes:
–jeroen
Posted in .NET, BASS, Development, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2011/05/03
It is always fun to see error messages on web-sites; they reveal a lot about the technology they use.
For instance, DealExtreme – a very popular site to order electronics and gadgets from the far east – uses ASP.NET.
They have verbose logging enabled, which even includes a warning to turn it off in production sits, as per this comment in the page source:
This error page might contain sensitive information because ASP.NET is configured to show verbose error messages using <customErrors mode=”Off”/>. Consider using <customErrors mode=”On”/> or <customErrors mode=”RemoteOnly”/> in production environments.
This is the full text, indicating they use .NET 2.0 and SQL Server with connection pooling (which is a good thing), and the BLToolkit extensions, Callbacks, a separation of Business Logic and Data Abstraction (BLL, DAL/DAO) probably using Spring.net and Data Binding by calling BindData() in stead of DataBind().
Server Error in ‘/’ Application.
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server)
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: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server)
Source Error:
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): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)] System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +578 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +88 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +6265031 System.Data.SqlClient.SqlConnection.Open() +258 BLToolkit.Data.DbManager.ExecuteOperation(OperationType operationType, Action operation) +64 [DataException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)] BLToolkit.Data.DbManager.OnOperationException(OperationType op, DataException ex) +176 BLToolkit.Data.DbManager.ExecuteOperation(OperationType operationType, Action operation) +135 BLToolkit.Data.DbManager.OpenConnection() +91 BLToolkit.Data.DbManager.get_Connection() +42 BLToolkit.Data.DbManager.OnInitCommand(IDbCommand command) +31 BLToolkit.Data.DbManager.get_SelectCommand() +28 BLToolkit.Data.DbManager.GetCommand(CommandAction commandAction, CommandType commandType, String sql) +18 BLToolkit.Data.DbManager.PrepareCommand(CommandAction commandAction, CommandType commandType, String commandText, IDbDataParameter[] commandParameters) +91 BLToolkit.Data.DbManager.SetCommand(CommandAction commandAction, CommandType commandType, String commandText, IDbDataParameter[] commandParameters) +51 BLToolkit.Data.DbManager.SetCommand(String commandText, IDbDataParameter[] commandParameters) +25 DealExtreme.Mall.Common.DAL.DAO.BLToolkitExtension.CategoryAccessor.GetAll() +168 DealExtreme.Mall.Common.BLL.CategoryBL.CategoryLogic.GetAllCategory() +53 DealExtreme.Mall.Common.Caching.ProductCaching.CategoryCache.GetAllCategories() +9 DealExtreme.Mall.Common.Caching.ProductCaching.BLToolkitExtension.CategoryCache.GetAllCategories() +433 DealExtreme.Mall.Search.BLL.SearchLogic.GetSearchedCategory(String request) +255 DealExtreme.Mall.Search.Web.Search.BindData() +416 DealExtreme.Mall.Search.Web.Search.Page_Load(Object sender, EventArgs e) +16 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42 System.Web.UI.Control.OnLoad(EventArgs e) +132 System.Web.UI.Control.LoadRecursive() +66 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428
[SqlException]: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at BLToolkit.Data.DbManager.ExecuteOperation(OperationType operationType, Action operation)
[DataException]: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
at BLToolkit.Data.DbManager.OnOperationException(OperationType op, DataException ex)
at BLToolkit.Data.DbManager.ExecuteOperation(OperationType operationType, Action operation)
at BLToolkit.Data.DbManager.OpenConnection()
at BLToolkit.Data.DbManager.get_Connection()
at BLToolkit.Data.DbManager.OnInitCommand(IDbCommand command)
at BLToolkit.Data.DbManager.get_SelectCommand()
at BLToolkit.Data.DbManager.GetCommand(CommandAction commandAction, CommandType commandType, String sql)
at BLToolkit.Data.DbManager.PrepareCommand(CommandAction commandAction, CommandType commandType, String commandText, IDbDataParameter[] commandParameters)
at BLToolkit.Data.DbManager.SetCommand(CommandAction commandAction, CommandType commandType, String commandText, IDbDataParameter[] commandParameters)
at BLToolkit.Data.DbManager.SetCommand(String commandText, IDbDataParameter[] commandParameters)
at DealExtreme.Mall.Common.DAL.DAO.BLToolkitExtension.CategoryAccessor.GetAll()
at DealExtreme.Mall.Common.BLL.CategoryBL.CategoryLogic.GetAllCategory()
at DealExtreme.Mall.Common.Caching.ProductCaching.CategoryCache.GetAllCategories()
at DealExtreme.Mall.Common.Caching.ProductCaching.BLToolkitExtension.CategoryCache.GetAllCategories()
at DealExtreme.Mall.Search.BLL.SearchLogic.GetSearchedCategory(String request)
at DealExtreme.Mall.Search.Web.Search.BindData()
at DealExtreme.Mall.Search.Web.Search.Page_Load(Object sender, EventArgs e)
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
[HttpUnhandledException]: Exception of type 'System.Web.HttpUnhandledException' was thrown.
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.search_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4955
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Posted by jpluimers on 2011/04/26
Since I use (among others) both Visual Studio and Delphi, I changed the Tortoise Global Ignore Pattern to be this:
Debug lib *.identcache *.local *bin *obj RECYCLER Bin *.user *.suo *.dcu __history ModelSupport_* *.rsm thumbs.db *.bak *.~* __recovery *.tvsconfig *.o *.lo *.la *.al .libs *.so *.so.[0-9]* *.a *.pyc *.pyo *.rej *~ #*# .#* .*.swp .DS_Store
The bold portion is what I changed when compared to the original one:
*.o *.lo *.la *.al .libs *.so *.so.[0-9]* *.a *.pyc *.pyo *.rej *~ #*# .#* .*.swp .DS_Store
Input from [WayBack] Tortoise SVN Global Ignore Pattern for Visual Studio (which also included some of the Delphi patterns), [WayBack] this Stackoverflow question (that indicated the patterns are case sensitive) and [WayBack] Shawn Oster | TortoiseSVN global ignore pattern for Visual Studio and Delphi.
–jeroen
PS: Added __recovery as Delphi 10.* started to use that for recovery files, which – unlike __history is not documented, see [WayBack] What is the __recovery folder ? In C++ Seattle 10 Professional running under Win 7 I now get a folder called __recovery.
Posted in .NET, Delphi, Development, Software Development, Source Code Management, Subversion/SVN | Leave a Comment »
Posted by jpluimers on 2011/04/21
Quite a few things are similar when doing Generics in both Delphi and C#.
But constraints are a bit different.
To quote the Delphi Wiki page on Constraints in Generics – RAD Studio XE:
Constraints can be associated with a type parameter of a generic. Constraints declare items that must be supported by any particular type passed to that parameter in a construction of the generic type
Constraint items include:
- Zero, one, or multiple interface types
- Zero or one class type
- The reserved word “constructor“, “class“, or “record“
You can specify both “constructor” and “class” for a constraint. However, “record” cannot be combined with other reserved words.
Multiple constraints act as an additive union (“AND” logic).
A few other differences are these:
Note that – like the Delphi documentation – the C# constraints on type parameters documentation is not complete on those either.
Related: a great post [WayBack] Using Generics in Delphi – Phil Gilmore covering the comparison between C# and Delphi in more depth.
–jeroen
via: Constraints in Generics – RAD Studio XE.
Posted in C#, Delphi, Development, Software Development | 10 Comments »
Posted by jpluimers on 2011/04/20
Boy, I love stackoverflow.
Unlike a forum – which is focussed on discussion – stackoverflow is focussed on questions and answers, and they have lots of good answers.
Recently, I had to format numbers in a human readable way.
The formatting – C#: File-size format provider – Stack Overflow question had at least 3 good ways.
I chose the FileSizeFormatProvider answer, as it best fitted my goal and it is easy to extend, but the StrFormatByteSize answer works very well too if you need an ‘out of the box’ solution that works on native Windows.
–jeroen
Posted in .NET, C#, C# 2.0, C# 3.0, C# 4.0, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2011/04/19
Sometimes little snippets of code help you big time.
Note the below ones are not performant (they will load all the data), but can make your code a lot more readable.
Use with care!
return list.Select(x => x.ToString()).ToArray();
return list.Select(x => x.ToString()).ToList();
via: Convert linq query to string array – C# – Stack Overflow.
Posted in .NET, C#, C# 3.0, C# 4.0, Development, LINQ, Software Development | Leave a Comment »
Posted by jpluimers on 2011/04/14
Setting up remote debugging is always a precarious thing, no matter what kind of development platform: the online documentation tells you the standard steps, but usually they don’t suffice.
This case is Visual Studio 2010 remote debugging, where the development environment is on a workstation running Windows 7, and the debug target is on Windows Server 2008 R2.
Both are x64 versions.
There is a remote desktop connection to the server, and the server can see the workstation files on the \\TSCLIENT\C share.
This is the error when running msvsmon.exe from \\tsclient\C\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\Remote Debugger\x64:
[Visual Studio Remote Debugging Monitor] The following error occurred: Not enough storage is available to complete this operation. View Msvsmon's help for more information. [OK]
(Funny BTW that the x64 Remote Debugging Monitor is in fact in an x86 path).
The solution is simple: copy the x64 directory local, then start it from there.
The reason in that the user credentials on the server don’t have enough rights on the \\TSCLIENT\C directory tree, so Windows barfs on it.
This pointed me into the right direction when I started Process Monitor from the same \\TSCLIENT\C share: Read the rest of this entry »
Posted in .NET, Debugging, Development, Remote Debugging, Software Development, Visual Studio 2010, Visual Studio and tools | Leave a Comment »
The Wiert Corner - irregular stream of stuff 