Living .NET... - All Comments

re: String.Format: A Simple Tip

visitor — Thu, 24 Apr 2008 02:50:36 GMT

2 points.

1. watch out for {0) which looks a lot like {0} which if you're typing fast can happen quite frequently...will result in a very strange message you could end up surfing around for hours trying to find what's wrong...not that that's happened to me or anything.

2. as far as sql injection we do something like this:

String.Format("sql goes here where id = {0}", SqlTool.StringToSQL(m_String));

and have a separate class that handles the '' stuff... this allows you to escape things neatly behind the scenes, still use string.format, and keep code consistent, and still use intellisense to make things speedy...

re: Throw Trap

Ulf — Wed, 12 Mar 2008 16:07:45 GMT

Hi,

I have a question or need to get some thing confirmed because I'm a bit unsure about this.

Looking at Lance Hunts guideline paragraph 4.4 the example says

// Bad!

catch(Exception ex)

{

Log(ex);

throw ex;

}

// Good!

catch(Exception)

{

Log(ex);

throw;

}

As I understand it is not possible to do as in the good example, since ex is not declared. Or am I wrong?

If I do the good example as you do it, it seems that I get the same result. I'm I right about that?

// Good! (Modified)

catch(Exception ex)

{

Log(ex);

throw;

}

re: BackgroundWorker and SynchronizationContext

Martin Golding — Thu, 14 Feb 2008 14:12:54 GMT

>>But from a thread with just has a standard

>>SynchronizationContext, the send and post method of

>>this context do not marshall the call to a specific

>>thread!

Does a standard SynchronizationContext enable the ability to marshall to the original thread?

All of my test code says no, If I output Thread.GetHashCode() and write test code I can see when using ctx.Post, it always uses the running thread ID and not the one I want to marshal to.

re: StackTrace and StackFrame

Jeremy — Thu, 17 Jan 2008 10:22:36 GMT

Hello,

i'm trying to do something like this, and i want to acces to the argument's instance of the invoked method.

I can access to the metadata (Type, Name) but i can't access to the value when the method is invoked.

How to do this ?

(Sorry for langage i'm not english :P)

Threading in .Net 2.0

Threading in .Net 2.0 — Tue, 15 Jan 2008 13:04:35 GMT

Pingback from Threading in .Net 2.0

re: Process.Start() Quips

Rohit — Wed, 09 Jan 2008 18:23:02 GMT

Does any one know a way in which the new process just created can be debugged (in Visual studio) ?

re: InternalsVisibleToAttribute - Friend Assemblies

Keith — Sun, 06 Jan 2008 18:51:23 GMT

[assembly:InternalsVisibleToAttribute("MyFriendAssembly, PublicKeyToken=45cb56a45e0a69a1")]

You cannot use PublicKeyToken with a signed assembly

you need to use public key.

Keith

re: Something IsMissing - A Short Story

Darrin — Fri, 21 Dec 2007 18:08:26 GMT

This article's attitude is indicative of the overall contempt that C/C++/C# developers had for VB6, even though it filled a need for quick business application development. (where requirements change constantly... hello, real world)

Thus, we ended up with lack of path from VB6 to VB.NET, all because a bunch of eggheads at Microsoft thought they new better than the marketplace!

E.g. Optional parameters

Ok, its somehow better that I write a dozen overloaded methods when a single method with Optional parameters would've done... VB.NET creates the overloads behind the scenes for you.

Why do you C# guys like writing so much code? I can't figure it out?

re: String.Format: A Simple Tip

Laoujin — Wed, 19 Dec 2007 11:05:41 GMT

You could just use string concatenation you just have to be careful to escape any possible attacks.

string.Format("SELECT * FROM table WHERE field='{0}'", userInput.Replace("'", "''"))

I'm sure there are better methods then the Replace in .NET but that would be perfectly save.

re: Process.Start() Quips

Zeina — Fri, 02 Nov 2007 15:52:40 GMT

Dear,

I have a batch file that runs Adobe.exe application. Executing this batch file from a Windows Application worked fine and the output of the Batch successfully achieved whereas the same code called from an ASP.NET application doesn’t work. The exe is displayed in the Task Manager but doesn’t execute the code it should and the user runing this service is the Administrator.

Apparently it is a security issue sine the problem occurs when hosting the application in IIS but I have tried working with all the permissions and it didn’t work. The Identity of the pool of the web site is Configurable with the System Administrator Credentials.

Many have the same problem but none has listed the solution. This is very urgent, so pleaseeeeeeeeeeeee help :(

Thank you,

Zeina

re: Me, MyBase and MyClass...

Wei — Wed, 31 Oct 2007 14:56:10 GMT

Nice to read that.. I was confused about mybase and myclass.

re: Process.Start() Quips

Neeraj — Wed, 17 Oct 2007 06:30:11 GMT

Hi,

I have the ollowing code running for runing a console application:

Process myProcess = new Process();

ProcessStartInfo info = new ProcessStartInfo(appName);

myProcess.StartInfo = info;

myProcess.StartInfo.UseShellExecute = false;

myProcess.StartInfo.RedirectStandardOutput = true;

myProcess.StartInfo.RedirectStandardInput = true;

myProcess.Start();

myProcess.WaitForExit();

Here I am passing the names of different console applications in the ProcessStartInfo.

My Problem is that the console application starts, but within a second closes, though when I run this application as a standalone, it runs properly.

Please Help somebody

re: A simple MSMQ Listener helper class

Sloan — Wed, 03 Oct 2007 14:16:39 GMT

//Quote//

I am using the same code and created windows services in my local system but if i run my windows service to receive the message. Access denaid the error message i got.

Can u specify the the format name for the Queue Path. Or any security setting has to be enabled.

//End Quote

You have to go thru "Manage Computer" and find the Queue. And give permissions ON THE QUEUE...to the "SYSTEM" account (the SYSTEM account local to that computer).

You don't have to do "Full Control", but Send/Receive are necessary. I usually give Get/Set Permissions as well.

re: Tip: StrongNameIdentityPermission

Roiy zysman — Sun, 30 Sep 2007 07:14:49 GMT

SNIP is not always the best way to protect your code.

Check out this article

blogs.msdn.com/.../196590.aspx

Thanks

Roiy

re: Process.Start() Quips

roberto — Wed, 26 Sep 2007 11:37:11 GMT

I have a problem with windows service. When i run Process.Start("iexplore.exe"), i cant open a iexplore window but the i see the process running in task manager. This services running under windows server 2003, and have checked Interact with Desktop, but doesnt work. My email is roberto@t2o.es . If someone can help me, send me a email please. Thank you for you colaboration.

re: Process.Start() Quips

kamran — Sun, 26 Aug 2007 11:34:36 GMT

winservice starts the process (Application) but does not bring it to interface. i ve checked Interact with desktop

but doesn't work

using win-XP

VS-2003

re: A simple MSMQ Listener helper class

JM — Wed, 08 Aug 2007 01:55:36 GMT

I worte a Q listener as a window service, it is working for read the local transactional Q. But when I cluster the MSMQ, the Q listenser service can not read the Q any more.

any idea why?

re: Me, MyBase and MyClass...

VIRAJ — Thu, 26 Jul 2007 07:43:41 GMT

It's a really nice explanation to the point. Thnks in advance

Regards

VIRAJ

re: Process.Start() Quips

Dave — Fri, 20 Jul 2007 14:37:32 GMT

In a response to Ken, and also to fix the issue, I would like to know why I have to tick and untick the Interact checkbox to make it work. (The code does make it ticked but as no effect).

I've also noticed other ControlSet in the registry,

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MYSERVICE

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\MYSERVICE

Should I change the value for these also.

Why do I need to go under services and untick, tick again, apply to make it work ???

floyd us 27 a t hotmail d o t com

Thanks.

re: A simple MSMQ Listener helper class

Filip — Mon, 04 Jun 2007 02:08:13 GMT

Nice code, would you be able to provide an example of the test class as well on how to call this? (Sorry, I'm a c# beginner)