Changes on my blog
A few days ago I made a few major changes on my blog:
The engine change went OK. Once I updated the files, there was a imprefections in querying database, but clicking the suggested link on wp-admin page solved them all.
Currently, when I have some free time I browse plugins and themes – still can find something better/new. So …
adminWhat happens if concate String value and int?
Can you predict the output/result of the following code?
String s = "A String "; s += 12345; System.out.print(s);
The answer is: “A String 12345“.
The reason for that is described in the desciption of String class in Java 2 Platform SE 5.0 API:
…The Java language provides special support for the string concatenation operator ( + ),
Problems with UpdatePanel on SharePoint
If you want to add some AJAX flavour to your ASPX pages running on SharePoint you need to perform a few actions:
- install ASP.NET AJAX on servers in your farm
- extend SharePoint web.config file with Microsoft ASP.NET AJAX
- add ScriptManager either in the master page you’re using (prefferable) or in all pages that employ AJAX
The above listed steps are …
How to configure log4net on SharePoint?
Recently I had to add logging feature to the SharePoint project I’ve been developing. I had to use log4net. I followed my friend’s advice but for some reason it wouldn’t work in my case. I didn’t get any errors or exceptions. Simply nothing was logged to the file, which by the way would not be even created. All in all …
Java vs. C#
From now on I’ll be doing much more in Microsoft .NET rather than in Java. Thus, it seems my preparation for SCJP exam will slow down now… Also, I presume there’ll be slightly less about Java on that blog from now on (at least for some time).
I learned about .NET framework and C# programming language at the univesity, but …
Castle.ActiveRecord.Framework.ActiveRecordException: Could not perform Delete for XXX —> NHibernate.Exceptions.GenericADOException: could not delete collection
The beginning of the stack trace I got today looked as below:
2009-05-19 11:01:45,078 ERROR [5232] XXX - Speaker already deleted: Castle.ActiveRecord.Framework.ActiveRecordException: Could not perform Delete for Speaker ---> NHibernate.Exceptions.GenericADOException: could not delete collection: [XXX#XXX][SQL: SQL not available] ---> System.Data.SqlClient.SqlException: Cannot insert the value NULL into column 'SpeakerId', table 'XXX.dbo.lnk_Session_Speaker'; column does not allow nulls. UPDATE fails. The statement has…
System.IO.IOException: The process cannot access the file used as attachment with MailMessage
Recently I had to improve the mechanism of sending emails so that files can be attached to it. As I used MailMessage it seemed to be an easy task, especially that MSDN provided an example of how to do it. They assumed there that the file used as the attachment was already on the server and it shouldn’t be deleted …
Web 2.0 and social networks around the world and in Poland
I’ve just read an article about popularity of Web 2.0 and social networks in general all around the world. Quite nice article to me.
Basing on what the information passes there, in Poland we don’t have any popular social networking websites. To some extend it’s correct – if Poles use social networking websites, these are mostly Polish services, mostly unknown …
Latex tables
I wrote my Master’s Thesis in Latex since it allows me to focus on the content of the paper rather than on how it looks. Having the content it is possible to change the output style by changing the Latex code. Recently, I faced a problem of creating tables with background color. After some time Googleing I found some information. …
AJAX activity indicator
Users are familiar with indications of work performed in background since first versions of MS Windows. Besides being fancy, they are also informative.
AJAX, a Web 2.0 technique, aim at exchanging only small amounts of data with a server; this should be performed behind the scenes. If so, why not expose the moments when user interaction brings about reqest and …