C# Discussion Boards - CodeProject

Mohamad Al Husseiny14-Aug-05 11:29

14-Aug-05 11:29

if you dont know the first character use
[\ws] which mean any character
so pattern would be like this [\ws]est
which will match test and best and so on

MCAD

Re: not case-sensitive string.Replace()

Guffa14-Aug-05 12:03

Guffa

14-Aug-05 12:03

Simply:

string result = Regex.Replace("Uma Thurman", "thurman", "whatever", RegexOptions.IgnoreCase);

---
b { font-weight: normal; }

Re: not case-sensitive string.Replace()

Bounz15-Aug-05 9:14

Bounz

15-Aug-05 9:14

Thanks a lot. I have learned a lot of new...
Smile | :)

--
Digitally yours, Bounz

Getting the real directory of a GAC'd assembly

MrEyes14-Aug-05 8:56

MrEyes

14-Aug-05 8:56

How can I get the actual directory of an assembly that has been placed into the GAC?

If I use the following code

System.Reflection.Assembly.GetExecutingAssembly().CodeBase

I get the GAC path back, e.g.

file:\c:\windows\assembly\gac\testGacLocation\1.0.0.0__826f0e5396cfccdecb

What I actually want it the real directory of the testGacLocation.dll file which is

C:\DirectoryA\DirectoryB\testGacLocation.dll

I cant hard code this as this directory may change but the DLL will always be gac'd.

The reason I need to do this is that there is text file in the testGacLocation.dll that the dll needs to read, when running an application that calls the read function in the dll it attempts to read from the application directory and not the dll directory.

post.mode = postmodes.signature;
SELECT everything FROM everywhere WHERE something = something_else;
> 1 Row Returned
> 42

Re: Getting the real directory of a GAC'd assembly

leppie14-Aug-05 9:20

leppie

14-Aug-05 9:20

System.Reflection.Assembly.GetEntryAssembly()

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Re: Getting the real directory of a GAC'd assembly

MrEyes14-Aug-05 9:41

MrEyes

14-Aug-05 9:41

Unfortunately that returns the directory of the executable directory

As an extended example I have the a DLL which is located here :

C:\Gactest\RefTestDll.dll

Which has the following code :

using System;

namespace RefTestDll
{
 public class Dll
 {
  public string GetRefDirectory()
  {
   return System.Reflection.Assembly.GetEntryAssembly().CodeBase;
  }
 }
}

This dll is added to the GAC

I then have an application located here :

c:\GacTestApp\gactestapp.exe

Which uses the GAC reference to the DLL mentioned above using the following code:

using System;

namespace RefTestApp
{
	class Class1
	{
		[STAThread]
		static void Main(string[] args)
		{
			RefTestDll.Dll d = new RefTestDll.Dll();
			Console.WriteLine(d.GetRefDirectory());
		}
	}
}

The only directories I seem to be able to get back from the Reflection namespace is either the real GAC directory or the directory of the calling application.

Re: Getting the real directory of a GAC'd assembly

MrEyes14-Aug-05 11:16

MrEyes

14-Aug-05 11:16

It seems that I have found a solution, its nasty, its hacky, it probably wont be reliable but at the moment it seems to work.

When an assembly is entered into the GAC it is placed into the following directory :

c:\windows\assembly\GAC\[assembly name]\[assembly name]_[strong name]\

This directory also contains the following file :

__AssemblyInfo__.ini

This INI file contains a URL parameter which contains the path I need

using the following code:

private static string GetConfigPath(string configFileName)
		{
			string assemblyDirectory = string.Empty;

			//get the executing assembly
			Assembly executingAssembly = Assembly.GetExecutingAssembly();

			if( ( true == executingAssembly.GlobalAssemblyCache ))
			{
				//if assembly is in gac use this nasty hack to get the real path to the file
				IniReader iniReader = new IniReader(String.Format( @"{0}\{1}", System.IO.Path.GetDirectoryName(executingAssembly.Location), "__AssemblyInfo__.ini" ) );
				assemblyDirectory = System.IO.Path.GetDirectoryName( iniReader.ReadString("AssemblyInfo", "URL", "") );
			}
			else
			{
				assemblyDirectory = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase);
			}

			return String.Format(@"{0}\{1}", assemblyDirectory, configFileName );
		}

I can get the directory + the file name I specify

This function relies on an IniReader class which I obtained from:

http://www.mentalis.org

As mention above, this works but IMHO it hacking as hell, I am also not overly impressed that this sparkly .NET Framework thing uses INI files.

post.mode = postmodes.signature;
SELECT everything FROM everywhere WHERE something = something_else;
> 1 Row Returned
> 42

How to serialize the content of an ImageList class?

bouli14-Aug-05 8:29

bouli

14-Aug-05 8:29

Hello gurus,

I'd like to know how it is possible to serialize the content of an ImageList class?

I wish to load and save the content of an ImageList from/to a file.

Can someone show me a code snipet please?

Best regards.

Fred.

There is no spoon.

Re: How to serialize the content of an ImageList class?

leppie14-Aug-05 9:24

leppie

14-Aug-05 9:24

I think you can do it by serializing the ImageStream property.

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Re: How to serialize the content of an ImageList class?

bouli15-Aug-05 2:18

bouli

15-Aug-05 2:18

And how to do that???

Fred.

There is no spoon.

Re: How to serialize the content of an ImageList class?

HumanOsc15-Aug-05 3:57

HumanOsc

15-Aug-05 3:57

Hello...

Here is an example without exception handling:

// serialize
FileStream fs = new FileStream("C:\\imagelist.iml",FileMode.CreateNew);
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs,il.ImageStream);
fs.Close();

// deserialize
FileStream fs = new FileStream("C:\\imagelist.iml",FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
il.ImageStream = (ImageListStreamer)bf.Deserialize(fs);
fs.Close();

Poke tongue | ;-P

Re: How to serialize the content of an ImageList class?

bouli15-Aug-05 3:58

bouli

15-Aug-05 3:58

After searching for a few "minutes", that's the way I have found in the MSDN.
It works fine.

Thanks Smile | :)

Fred.

There is no spoon.

I need to handle the LWin (win logo) + D

kevin_smoke14-Aug-05 7:46

kevin_smoke

14-Aug-05 7:46

Hi all,
any one can tell me how to maintain my form window on the desktop and not minimized when the user presses LWin (win logo) + D

thanks

kevin smoke

Re: I need to handle the LWin (win logo) + D

Dave Kreskowiak14-Aug-05 16:39

Dave Kreskowiak

14-Aug-05 16:39

The only way to do that is to use a Low Level Keyboard hook. There are articles on this here at CP. Just don't pass that key combination to the next handler.

Also, Microsoft does NOT recommend doing this in their UI Guidelines. If I need to get to the desktop and your app gets in my way, my next mouse clicks go straight to Add/Remove programs...

Articles[^]

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Loading a renamed assembly into another AppDomain

EssOEss14-Aug-05 6:26

EssOEss

14-Aug-05 6:26

Here's my problem:

When I load an assembly that has been renamed (its filename is not the same as the one in the manifest), loading it throws an exception.

I have tried both AppDomain.Load(byte[]) and having it be auto-loaded using AppDomain.CreateInstance(string, string) and both throw exceptions. (Serialization exception in the Load() case and some obscure assembly load exception in the second case).
I haven't tried Assembly.Load() since I need to load it in another domain and I haven't found a way to use it for that.

What's going on? How can I get it to ignore the name in the manifest and just load the assembly I give it?

Re: Loading a renamed assembly into another AppDomain

leppie14-Aug-05 9:30

leppie

14-Aug-05 9:30

It sounds like the original assembly is also being loaded in the other AppDomain, hence causing a version clash. Look in the output window. Changing the version of the renamed file should solve this, but you could run into dependency problems.

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Re: Loading a renamed assembly into another AppDomain

EssOEss15-Aug-05 0:49

EssOEss

15-Aug-05 0:49

That can't be it - the original assembly does not exist, only the renamed one.

Re: Loading a renamed assembly into another AppDomain

leppie15-Aug-05 4:57

leppie

15-Aug-05 4:57

But its still loaded in the AppDomain!

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Re: Loading a renamed assembly into another AppDomain

EssOEss15-Aug-05 11:49

EssOEss

15-Aug-05 11:49

No, it can't be.

What I do is compile my assembly, rename it and then run the app. The original assembly is never even known to the app, so it could never load it...

Re: Loading a renamed assembly into another AppDomain

leppie15-Aug-05 20:39

leppie

15-Aug-05 20:39

Ok I wasnt aware of that Sniff | :^)

Im not sure then, I have renamed assemblies and they worked, but never tried in a secondary appdomain. Sorry Frown | :(

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How to group within a datagrid

David M J14-Aug-05 5:31

David M J

14-Aug-05 5:31

Hi,
I am looking for some way that you can drag and drop a columnheader and create a group based on that. I know there is a lot of third party software doing this, but they more or less all look the same, so I am wondering whether this is somekind of standard feature provided by the grid or that it is realy simple to code. Normally I would find something about this in the articles section as it is a quite common feature, but i couldn't find anything there. Any suggestions?

Cheers
DJ

Think, try, think, think, try, think, think, think, try, ASK, think, try, advance on step and start over...

Re: How to group within a datagrid

Mohamad Al Husseiny14-Aug-05 7:26

Mohamad Al Husseiny

14-Aug-05 7:26

David M J wrote:
but they more or less all look the same

they look the same because they doing the same task but internally they differ in thier architecture and each one has its Pros and Cons

David M J wrote:
so I am wondering whether this is somekind of standard feature provided by the grid or that it is realy simple to code

Making grid look like third party grids is complex task

MCAD

extracting icons from exe files

Mridang Agarwalla14-Aug-05 4:48

Mridang Agarwalla

14-Aug-05 4:48

how can i extract the icon from an exe file and display it in a icon list view box and how can can i control the properties of each icon separately like a triggering a different event on clicking a different icon?

Re: extracting icons from exe files

Mohamad Al Husseiny14-Aug-05 5:17

Mohamad Al Husseiny

14-Aug-05 5:17

To Extract Icon From dll or exe use ExtractIconEx

<br />
[DllImport("shell32.dll", CharSet=CharSet.Auto)]<br />
static extern uint ExtractIconEx(string szFileName, int nIconIndex, IntPtr[] phiconLarge, IntPtr[] phiconSmall, uint nIcons);<br />

Use it to get IconHandle from the file
Then using this handle to create Icon class by calling
icon.FromHandle()
So you can use this Icon class to do what you want
For example look at
http://www.pinvoke.net/default.aspx/shell32/ExtractIconEx.html[^]

MCAD

Warning: The event xxx is never used

Libor Tinka14-Aug-05 4:19

Libor Tinka

14-Aug-05 4:19

As my application grows, task list shows me more and more warnings and I want to put them out.

It's easy to remove most of them, like unused fields, but what to do with unused events?

I've declared some events in interface and not every class raises these events. So I've got a warning.

The interface is IWizardPage and classes are wizard pages. Event handlers for typical events of wizard pages (like wizard buttons update) are hooked up in WizardSheet dialog, so it will be dummy not to declare events in interface.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.