Archive for the ‘Development’ Category
Posted by jpluimers on 2013/09/17
Igor Ostrovsky wrote a few very nice MSDN magazine articles. Not all of them have ended up in the list at MSDN magazine, so here is a more complete list:
Though the articles show the majority of sample code in C#, the actual topics are of great interest to any developer writing .NET code or interfacing to it.
Some keywords in his articles: Read the rest of this entry »
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, .NET CF, C, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, C++, Delphi, Development, F#, LINQ, PLINQ, Prism, Software Development, VB.NET, VB.NET 10.0, VB.NET 11.0, VB.NET 7.0, VB.NET 7.1, VB.NET 8.0, VB.NET 9.0 | Leave a Comment »
Posted by jpluimers on 2013/09/12
On my research list:
I need to check out KBOX — a miniature Linux distribution integrated with a terminal for non-rooted Android devices.
It seems to add a lot of normal unix/Linux commands to your Android terminal emulator, but does not require root access.
I usually use a Windows or Mac system to browse the files on my Android device, but this should be much more convenient and aid both software developers and power users.
Now I need a remote ssh access to my Android device (:
–jeroen
via: KBOX — a miniature Linux distribution integrated with a terminal for non-rooted Android devices – Kevin Boone’s Web site.
Posted in Android, Android Devices, Development, Mobile Development, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2013/09/11
Thanks for StackOverflow user xordon for this answer:
This is current accepted way to link to a specific lat lon (rather than search for the nearest object).
http://maps.google.com/maps?z=12&t=m&q=loc:38.9419+-78.3020
- z is the zoom level (1-20)
- t is the map type (“m” map, “k” satellite, “h” hybrid, “p” terrain, “e” GoogleEarth)
- q is the search query, if it is prefixed by loc: then google assumes it is a lat lon separated by a +
–jeroen
via: What parameters should I use in a Google Maps URL to go to a lat-lon? – Stack Overflow.
Posted in Development, Google, GoogleMaps, HTML, Power User, Software Development, Web Development | Leave a Comment »
Posted by jpluimers on 2013/09/10
Just came across this nice answer by harpo containing a small class that can Escape/Unescape double-quotes in strings.
–jeroen
via: Good CSV Writer for C#? – Stack Overflow.
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, CSV, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2013/09/05
The NEXTGEN family of Delphi compilers for the Mobile platforms changed quite a bit of things.
Most of it has been covered by various blogs posts. A non exhaustive list of ones I liked:
Those articles do not contain two things I had’t found about yet though that are important when you do RTTI using NEXTGEN in Delphi XE4: Read the rest of this entry »
Posted in Delphi, Delphi XE3, Delphi XE4, Development, Encoding, Software Development, Unicode, UTF-8 | 2 Comments »
Posted by jpluimers on 2013/09/05
Darren Davies answered via SQL query to get the deadlocks in SQL SERVER 2008 – Stack Overflow a while ago listing a great SQL statement by Mladen Prajdić that shows how to do without the deprecated SP_LOCKS and SP_WHO2 (which is undocumented, and slightly different from SP_WHO) or the good old SP_LOCK2.
It is the textual equivalent of the Deadlock Graph, which is part of the SQL Server Profiler.
I like that profiler a lot (read this step-by-step intro if you haven’t used it), but some environments consider it too much power for a developer to use.
The SP_LOCKS documentation directs you to the sys.dm_tran_locks documentation, which is the base of the SQL below. It requires the mostly harmless VIEW SERVER STATE permission.
Finding out what to join in order to get some readable results suited for quick troubleshooting is quite an undertaking.
Mladen did all that, and this is his SQL: Read the rest of this entry »
Posted in Database Development, Development, SQL Server, SQL Server 2000, SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012 | Leave a Comment »
Posted by jpluimers on 2013/09/04
You will see a few Delphi XE5 pre-release related updates here soon. That is part of the Delphi XE5 beta blogging permission I have been given so I can show new Delphi XE5 features. Those updates are from a pre-release version of Delphi XE5 and will be replaced with a final update when Delphi XE5 is being released.
For more information about Delphi XE5 and the Android support, please visit http://embt.co/RADAndroid.
Though not as fast as I hoped (I’ve slept most of the past days), I’m already preparing my Mercurial repositories at https://bitbucket.org/jeroenp, and preparing for the PasCon / RAD Studio In Action in Leiden, The Netherlands next saturday so stay tuned.
About this event: there are a few seats left, and a last-minute discount recently launched. Book your tickets through the on-line links for EUR 35 excluding VAT (normallu EUR 49 excluding VAT): Read the rest of this entry »
Posted in Delphi, Delphi XE5, Development, Software Development | Tagged: bitbucket, Delphi, repositories | Leave a Comment »
Posted by jpluimers on 2013/09/04
Lots of people are confused about the different time out options you can set in ADO.NET.
Thanks NinethSense for explaining this well for the SqlClient DAL. Other DALs work in a similar way.
- SqlCommand.CommandTimeout = timeout limit for your SQL query. Means, how much time a (eg: SELECT, UPDATE) query can take for its execution. If it exceeds SqlCommand.CommandTimeout, then it stops execution. A command timeout error will occur.
- SqlConnection.ConnectionTimeout = timeout limit for your connection. Means, how much time your connection object can try to connect. If it exceeds the specified time, it stops connecting. A connection timeout error will occur.
–jeroen
via: .net – What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout? – Stack Overflow.
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, Development, Software Development | 1 Comment »
Posted by jpluimers on 2013/09/03
A while ago, I inherited a .NET project that used the EnterpriseLibrary, the original developers (it got developed around 2003) were gone, and every exception would end up in this:
SecurityException: The source was not found, but some or all event logs could not be searched. To create the source, you need permission to read all event logs to make sure that the new source name is unique. Inaccessible logs: Security.
Searching for the combination “EnterpriseLibrary” “The source was not found, but some or all event logs could not be searched. To create the source, you need permission to read all event logs to make sure that the new source name is unique. Inaccessible logs: Security.” revealed only 1 result:
patterns & practices – Enterprise Library – View Discussion: Logging Error of FormattedEventLogTraceListener in Win7.
Even though I didn’t want anything to be logged in the EventLog, I wanted text logs, and looking at the .config files in the main project, the Enterprise Library logging setup was correct (right sinks, etc).
Somehow, the EnterpriseLibrary still insisted on writing to the eventlog, and this particular exception was the only one tricking to the unhandled exception layer…
For logging in the Eventlog, that particular event log must exist. In order to create an eventlog, you need to have administrator access. And here is the crux: apparantly, the original developers were (while working on Windows NT 4) all Administrators. So they never noticed this problem (and maybe never even looked for that log). After having the Visual Studio debugger break on all CLR exceptions, not only the unhandled ones, I could see this one shown below fired deep inside the EnterpriseLibrary. Which means that the original developers:
- did add the EnterpriseLibrary V2 (yes, this project still had V2 and part of the config files were V1.1!) configuration files to the main project:
- Had forgotten to mark these files as “Copy to Output Directory” to have the value “Copy if Newer” or “Copy Always”
Marking the files as such solved the below exception, and now on my todo list is to make the old V1.1 stuff go away, and migrate to the most current Enterprise Library. Read the rest of this entry »
Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, Development, EnterpriseLibrary, Software Development | Leave a Comment »
Posted by jpluimers on 2013/09/01
While working on my Delphi: First try on an XSD for .groupproj files, I bumped into an error `Namespace ” is not available to be referenced in this schema`.
I added a targetNamespace attribute to the GroupProj.xsd so the .grouproj files would use the right namespace.
That resulted into two funny errors:
- Namespace ” is not available to be referenced in this schema.
Visual Studio (which I normally use for editing XSD) would only throw this error on these elements:
<xsd:element ...>
So it would not throw them on nodes using the empty namespace.
That was really confusing!
- When validating .grouproj files using this GroupProj.xsd, I would get this error for all .groupproj files:
System.Xml.Schema.XmlSchemaValidationException: Type ‘<type>’ is not declared. (in this case for ‘<type>’ ‘ProjectType’).
That was odd too: the ‘ProjectType’ was indeed declared, and should be valid.
I could hardly find any information about the latter error, but the former gave a few useful hits.
Thanks User weston – Stack Overflow. for answering this: it made me smack to my head (like usual, a case of EBCAK). Read the rest of this entry »
Posted in Delphi, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Development, Software Development, XML/XSD, XSD | Tagged: software, stack overflow, technology | 2 Comments »
The Wiert Corner - irregular stream of stuff 