C# Discussion Boards - CodeProject

Re: Is it possible to access 32bit dll from 64 bit dll

jsjwql1236-Nov-09 14:10

6-Nov-09 14:10

Thanks Daniel, the reason is our Application is 64bit and I need to introduce an ActiveX 32bit control into our program.
Is it possible to create an idividual 32bit project for this ActiveX control, then let 64bit host applicaton to launch it?

Re: Is it possible to access 32bit dll from 64 bit dll

Dave Kreskowiak6-Nov-09 14:46

Dave Kreskowiak

6-Nov-09 14:46

The only way you can get one to talk to the other is if the 64-bit code is in a one process (i.e.: an .EXE) and the 32-bit code is in a completely seperate process, another .EXE. There is no way to get a 32-bit ActiveX control to work in a 64-bit app.

If you install 64-bit Vista or Windows 7, there are two versions of Internet Explorer installed, one 32-bit and the other 64. Why do you think that is?

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Application Call Hook

b0b3rt6-Nov-09 11:59

b0b3rt

6-Nov-09 11:59

Is there a simple way to hook calls to other files, so that I can redirect or stop them?

Thanks.

Re: Application Call Hook

Christian Graus6-Nov-09 12:07

Christian Graus

6-Nov-09 12:07

Do you mean attempts to open files ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: Application Call Hook

b0b3rt6-Nov-09 12:10

b0b3rt

6-Nov-09 12:10

Yes, I need to stop one application from opening a second. I don't have the source code to either of them.

Thanks

Re: Application Call Hook

Luc Pattyn6-Nov-09 12:37

Luc Pattyn

6-Nov-09 12:37

How about moving, renaming, or deleting the file?

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Application Call Hook

b0b3rt6-Nov-09 12:42

b0b3rt

6-Nov-09 12:42

That won't work, the first application won't start if the second one isn't in the proper place (and the second application will just update itself to where it was before).

Custom 404 Error Handler

Joe Kohler6-Nov-09 11:19

Joe Kohler

6-Nov-09 11:19

I am trying to trap specific request for pages on my website. The custom errors defined in web config works fine for URLS with a page reference such as:
http://www.mydomain.com/123/i_dont_exist.aspx

This will redirect to my error page.

The problem is this:
http://www.mydomain.com/123

The directory 123 does not exist but the ie 404 displays, not my custom error page.

Any thoughts would be greatly appreciated.

C# File/DirectoryPermissions "Apply Onto" Advanced

dsmithdev16-Nov-09 7:07

dsmithdev1

6-Nov-09 7:07

I am looking for a way using C# to retrieve the "Apply Onto" value viewed when looking at the advanced properties for a directory.

<br />
             ...<br />
              // get security for directory<br />
              AuthorizationRuleCollection arc =  security.GetAccessRules(true, true, SECURITY_IDENTIFIER_TYPE);<br />
              foreach (FileSystemAccessRule fsar in arc) {<br />
                  String type = fsar.AccessControlType.ToString();<br />
                  ...<br />
              }<br />

I am trying to progromatically figure out which "Permissions Group" ( Full Control, Modify, Read and Execute a file and or directory is assigned.
List folder contents, Read, Write) is assigned.. I don't see anything stored on the FileSystemAccessRule to give me the "Apply Onto" field. Is there another object I have to use?

Read and Execute AND List folder contents have the same exact rights, but differ by the "Apply Onto" field.

List folder contents the Assigned onto field is : "This folder, subfolder and files"
Read and Execute the Assigned onto field is : "This folder and subfolders"

Is there another way to figure out this problem?

Any help would be appreciated.

Thanks.

string.Concat & MessageBox

BDJones6-Nov-09 7:00

BDJones

6-Nov-09 7:00

I need to pass a few strings & vars to MessageBox. The following works, but is there a better way than creating the object?

Object[] warning = new Object[] { "File " fileName " needed from " fileLocation " is missing." };
MessageBox.Show(string.Concat(warning));

Thanks.

Re: string.Concat & MessageBox

Luc Pattyn6-Nov-09 7:17

Luc Pattyn

6-Nov-09 7:17

MessageBox.Show("File " +fileName+ " needed from " +fileLocation+ " is missing.");

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: string.Concat & MessageBox

BDJones6-Nov-09 9:13

BDJones

6-Nov-09 9:13

Thank you.

Re: string.Concat & MessageBox

Dave Kreskowiak6-Nov-09 7:22

Dave Kreskowiak

6-Nov-09 7:22

Look into String.Format. You can rewrite your message like this:

String warning = String.Format("File {0} needed from {1} is missing.", fileName, fileLocation);

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: string.Concat & MessageBox

BDJones6-Nov-09 9:14

BDJones

6-Nov-09 9:14

Thank you..

Re: string.Concat & MessageBox

Pete O'Hanlon6-Nov-09 10:10

Pete O'Hanlon

6-Nov-09 10:10

Better yet, put your string in a resource dictionary, in the format File {0} needed from {1} is missing.. Then, in your code retrieve it and format it using

string format=string.Format(resourceText, fileName, fileLocation);

The advantage of doing this is that you can easily localise your applications by doing this - the {0} {1} can be rearranged in different languages as appropriate so the text will be displayed in the format the user would expect.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

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Re: string.Concat & MessageBox

BDJones6-Nov-09 10:51

BDJones

6-Nov-09 10:51

Thank you for the extra comments Pete, much appreciated. Guess I better take a look at resource dictionaries.

using ellipsis button in the listview

asiorhan6-Nov-09 4:55

asiorhan

6-Nov-09 4:55

hi. We have a problem with the ellipsis button using in a listview project in c#. we need to use it as the picture below which is linked.it is same like the property grid.
thanks

see this picture

No application configuration file found - FUSLOGVW - How to add application configuration file

KarthikonIT6-Nov-09 4:01

KarthikonIT

6-Nov-09 4:01

Hello,
I m creating a C# .NET Project in which i m trying to load third party Assemblies which are installed in GAC.

But in some machines I m getting an error stating "Unable to Load assembly of specified version 7.0.351.0".

when i tried to do an assembly redirection it didn't work it still shows the same error.

Note:
7.0.351.0 -The is version with which it is compiled.

12.0.0.0 - Assembly present in the Target machine

Properties of Reference
Specific Version -> False

Aliases -> global

Copy Local -> False

This is my sample application configuration file
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<runtime>

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" >

<dependentAssembly>

<assemblyIdentity

name="Act.Framework"

publicKeyToken="ebf6b2ff4d0a08aa" />

<bindingRedirect oldVersion="7.0.351.0"

newVersion="12.0.0.0" />

</dependentAssembly>

</assemblyBinding>

</runtime>

</configuration>

Logs of FUSLOGVW shows

"LOG: No application configuration file found."

But I already added the App Config file. Is it not detecting my config file?

How do I make it detect?

Steps I did to add App.Config file:

1. Add New Item through Project wizard and select "Application Configuration file".

Re: No application configuration file found - FUSLOGVW - How to add application configuration file

Shameel6-Nov-09 4:37

Shameel

6-Nov-09 4:37

Your config file should be named after your application. For example, if your app is myapp.exe, you config file should be named myapp.exe.config and should reside in the same folder as your exe file.

[Message Deleted]

DahrkDaiz6-Nov-09 2:38

DahrkDaiz

6-Nov-09 2:38

[Message Deleted]

Re: WPF DataGrid Upper left corner, what is it?

Calla6-Nov-09 3:28

Calla

6-Nov-09 3:28

This question might be better suited in the WPF / WCF / WF forum..

Windows 7 and Directory.Exists ???

Paul Brower6-Nov-09 2:27

Paul Brower

6-Nov-09 2:27

I have the following lines of code (2.0 framework) that worked in Win XP, but doesn't work with Windows 7:

if (!Directory.Exists(@"c:\Program Files\Newsham\PigtrakDesktop\RAPI"))
{
Directory.CreateDirectory(@"c:\Program Files\Newsham\PigtrakDesktop\RAPI");
}

Here's the weird part: If I try to navigate to c:\Program Files\Newsham\PigtrakDesktop using the Windows 7 explorer, the RAPI directory is NOT there.

However, in my code, if tell it to list the files in the same directory, there ARE FILES THERE!

This is really killing me. Any thoughts?

Re: Windows 7 and Directory.Exists ???

Paul Brower6-Nov-09 3:18

Paul Brower

6-Nov-09 3:18

I can't explain WHY the **** this is like this, but I found my files. They are located at:

C:\Users\pbrower\AppData\Local\VirtualStore\Program Files\Newsham\PigtrakDesktop

What the hell?

Re: Windows 7 and Directory.Exists ???

Calla6-Nov-09 3:27

Calla

6-Nov-09 3:27

Maybe something to do with MS not being so keen on us writing (and adding directories) to the Program Files folder in Vista and Windows 7? Just a thought (on friday afternoon)... Smile | :)

Re: Windows 7 and Directory.Exists ???

Daniel Grunwald6-Nov-09 3:29

Daniel Grunwald

6-Nov-09 3:29

"C:\Program Files" is not writable for standard users (just as it was since Win2000 and earlier).
Starting with Vista, the default user account is a standard user; getting admin rights only when you explicitly run an app with them (UAC).

To allow old programs to continue to run, Windows will redirect writes to the "VirtualStore". This is done only with programs that are not marked as "UAC-compatible".

So you have to do two things:
1) to avoid confusion due to file system virtualization; mark your program as UAC-compatible by embedding an UAC manifest. VS2008 should do this automatically (see "Application Manifest" in the project options); for VS2005 it's a little bit more complicated: http://blogs.msdn.com/shawnfa/archive/2006/04/06/568563.aspx[^]

2) Don't write to Program Files.

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