Posted by jpluimers on 2012/03/14
When I come across code like this, I’m always astonished:
catch(Exception ex)
{
string strMess = ex.Message;
}
What was the person thinking when he wrote this? Did he get distracted and nobody else notice this before checking it into their version control system?
In the same module:
private string ToString(object myVal)
{
try
{
if (myVal != System.DBNull.Value)
return myVal.ToString().Trim();
}
catch{}
return "";
}
–jeroen
Posted in .NET, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2012/03/13
Sometimes when creating new Team work items in Visual Studio 2010 connected to Team Foundation System 2010, you get a sub menu like this:
“New Work Item menu still loading… (try again in a moment)”
There are not many results in the new work item menu still loading “try again in a moment” site:microsoft.com query, but luckily the first one shows a similar issue in Visual Studio 2005 with Team Foundation System 2005: the “Add Work Item menu still loading… (try again in a moment)”.
The solution is also very simple:
Not sure if this can fail in Visual Studio 2008 too, but if it does, just apply this fix with version number to 9.0, and if it happens with the Visual Studio 11 developer preview, change the version number to 11.0.
–jeroen
via: Add Work Item menu still loading….
Posted in .NET, Development, Software Development, Visual Studio 2005, Visual Studio 2010, Visual Studio and tools | Leave a Comment »
Posted by jpluimers on 2012/03/12
Handy when working with Microsoft Surface: install your development environment on a separate VHD that you can boot as your physical machine (Microsoft Surface SDK does not like being run in a Virtual Machine):
If you accept the constraints described above, I propose the following procedure, which I think is the easiest way to install Windows 7 on a virtual disk in multi-boot
Note: Within the VHD you can still access all the files on your physical HD.
–jeroen
via: How to install Windows 7 on a virtual hard disk (VHD) in 10 steps – Guides & Tutorials.
Posted in .NET, C#, Development, Microsoft Surface, Microsoft Surface on Windows 7, Power User, Software Development, Windows, Windows 7, WPF, XNA | 1 Comment »
Posted by jpluimers on 2012/03/08
This use case drove me nuts in Visual Studio 2010 for a while, but can be solved.
Use cases:
double click on a word to select it
---------------------------
Microsoft Visual Studio
---------------------------
Cannot navigate to definition.
---------------------------
OK
---------------------------
or
---------------------------
Microsoft Visual Studio
---------------------------
Cannot navigate to definition. The cursor is not on a symbol.
---------------------------
OK
---------------------------
The reason is that Visual Studio 2010 still thinks I am clicking the identifier (which I’m not, I just released the mouse button) while pressing the Ctrl key. Read the rest of this entry »
Posted in .NET, Delphi, Development, Keyboards and Keyboard Shortcuts, Power User, Software Development, Visual Studio 2010, Visual Studio and tools | Leave a Comment »
Posted by jpluimers on 2012/03/07
It seems I’m not the ony one who watches what Eric Lippert writes closely.
Eric works at the C# team at Microsoft (since 1996, which is about the time Anders Hejlsberg joined Microsoft).
Unlike Anders, Eric is much more visible. I regularly read his blog, and watch his StackOverflow.com contributions (RSS feed) on a regular base.
Recently, he posted a awesome comment “Nullable is nothing but magic” on a the question “C# – Why does the == operator work for Nullable when == is not defined?“, together with a very concise answer explaining that in C# most operators are ‘lifted to nullable’.
Note his tiny – but important – mention that for == VB.net behaves different than C#.
Note that Eric is very productive, he usually contributes to StackOverflow.com multiple times a day, sometimes with material that (at least for me <g>) need a while before I really get the point.
Recommended reading :)
–jeroen
via: c# – Why does the == operator work for Nullable when == is not defined? – Stack Overflow.
Posted in .NET, C#, C# 2.0, C# 3.0, C# 4.0, Development, Software Development, VB.NET | Leave a Comment »
Posted by jpluimers on 2012/03/06
A short while ago a paper got published on PRESENT: An Ultra-Lightweight Block Cipher by Andrey Bogdanov et al becoming ISO standard 29192-2:2012.
Is there anyone that has a C#, Delphi or FreePascal implementation with unit tests?
–jeroen
Posted in .NET, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Delphi, Development, Software Development | 13 Comments »
Posted by jpluimers on 2012/03/02
Hopefully they will add Visual Studio 2011 ISOs (no, not the current ones that still download the prerequisites in the background) like they did with the Windows 8 Consumer Preview ISOs:
English
64-bit (x64) Download (3.3 GB) Sha 1 hash — 1288519C5035BCAC83CBFA23A33038CCF5522749 32-bit (x86) Download (2.5 GB) Sha 1 hash — E91ED665B01A46F4344C36D9D88C8BF78E9A1B39 Product Key DNJXJ-7XBW8-2378T-X22TX-BKG7J
–jeroen
via: Windows 8 Consumer Preview ISO formats.
Posted in .NET, Development, Power User, Software Development, Visual Studio 11, Visual Studio and tools, Windows, Windows 8 | 2 Comments »
Posted by jpluimers on 2012/02/29
(Note the WordPress bug: you cannot have <Default> in a topic title, but having it in the text is fine, hence the [Default] in the title).
When porting some projects from .NET 1.x to .NET 4.x, I got these two errors:
Error 17 Type 'MyProject.My.MySettings' is not defined.
Error 18 'MyProject' is not a member of '<Default>'.
Both errors in the file ...\My Project\Settings.Designer.vb relative to the MyProject.vbproj file.
This was not the result of something like this Visual Studio 2005 bug, but of how the designer generated files are not being regenerated when you change the root namespace only in the MyProject.vbproj file, not through the IDE.
Steps to reproduce:
Lesson learned: when using text compare tools, some .vbproj changes should be propagated through the IDE, not through your favourite text compare tool.
When you change it in the IDE, it regenerates the *.Designer.vb files to reflect the changed namespace.
The solution is simple, in the IDE follow these steps:
–jeroen
via: type “my.mysettings” “is not defined.” – Google Search.
Posted in .NET, Development, Software Development, VB.NET | Leave a Comment »
Posted by jpluimers on 2012/02/28
I don’t do P/Invoke often, and somehow I have trouble remembering the value of CharSet to pass with DllImport.
In short, pass CharSet.Auto unless you P/Invoke a function that is specific to CharSet.Ansi or CharSet.Unicode. The default is CharSet.Ansi, which you usually don’t want:
when Char or String data is part of the equation, set the CharSet property to CharSet.Auto. This causes the CLR to use the appropriate character set based on the host OS. If you don’t explicitly set the CharSet property, then its default is CharSet.Ansi. This default is unfortunate because it negatively affects the performance of text parameter marshaling for interop calls made on Windows 2000, Windows XP, and Windows NT®.
The only time you should explicitly select a CharSet value of CharSet.Ansi or CharSet.Unicode, rather than going with CharSet.Auto, is when you are explicitly naming an exported function that is specific to one or the other of the two flavors of Win32 OS. An example of this is the ReadDirectoryChangesW API function, which exists only in Windows NT-based operating systems and supports Unicode only; in this case you should use CharSet.Unicode explicitly.
–jeroen
via: .NET Column: Calling Win32 DLLs in C# with P/Invoke.
Posted in .NET, Ansi, C#, Delphi, Development, Encoding, Prism, Software Development, Unicode | 3 Comments »
Posted by jpluimers on 2012/02/22
When handling SqlExceptions in C#, it is wise to assess the Class, as it indicates the severity.
Some classes are user error, others are fatal, etc.
This extension class will help you:
using System;
using System.Data.SqlClient;
namespace bo.MsSql
{
/// <summary>
/// see http://msdn.microsoft.com/en-us/library/ms164086.aspx
/// </summary>
public static class SqlExceptionSeverety
{
public static bool IsInformational(this SqlException sqlException)
{
return sqlException.Class < 10;
}
public static bool IsUserCorractable(this SqlException sqlException)
{
return (sqlException.Class >= 10) && (sqlException.Class < 17);
}
public static bool IsSoftwareError(this SqlException sqlException)
{
return (sqlException.Class >= 17) && (sqlException.Class < 20);
}
public static bool IsFatalSystemProblem(this SqlException sqlException)
{
return sqlException.Class >= 20;
}
}
}
–jeroen
Posted in .NET, C#, Development, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 