Double Post - .NET (Core and Framework) Discussion Boards

Cross Post. Please ignore.

Pete O'Hanlon29-Apr-08 1:29

Pete O'Hanlon

29-Apr-08 1:29

See title

Deja View - the feeling that you've seen this post before.

My blog | My articles

Stymied by interop

Mark Schumann28-Apr-08 9:27

Mark Schumann

28-Apr-08 9:27

Hi everyone.

My customer has a COM object called validatecom.dll. I need to use this in my VS2005/C# web service. So I used tlbimp.exe to create a Runtime Callable Wrapper for validatecom.dll, defining the namespace as "wsl" because that makes sense in their environment. The COM interface is called IValidate, thus giving me a class called CValidateClass.

In my unit test, which runs as an ordinary .NET application, I can instantiate a wsl.CValidateClass object and call methods on it. No problem.

When I try to instantiate wsl.CValidateClass in my Web Service, however, I get an error, to wit:

System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID... yadda yadda yadda... failed due to the following error: 80070005.

And as we all know, 80070005 is another way of saying "Access Denied." Now I'm wondering why I can access the RCW assembly from an ordinary application, but not from a Web Service. I tried giving "full control" rights to "everyone" on that RCW assembly, but still no joy.

Any ideas on this? I'd be happy with a pointer to an MSDN article, a Google term, anything!

Thanks to all for your help.

Re: Stymied by interop

led mike28-Apr-08 9:30

led mike

28-Apr-08 9:30

See if this helps[^]

led mike

Re: Stymied by interop

Mark Schumann1-May-08 8:56

Mark Schumann

1-May-08 8:56

Well Mike, yes and no.

I've got the Runtime Callable Wrapper, and I can use it (still) from an ordinary console application, but I'm still getting those errors when I try to instantiate the object from within a web service.

I found out that when I just try to load the assembly directly using System.Reflection.Assembly.LoadFile(filename) it fails with the same error. But System.Reflection.Assembly.LoadFrom(filename) appears to work, as does System.Reflection.Assembly.ReflectionOnlyLoadFrom(filename).

When I use System.Security.Permissions.FileIOPermission to determine my ASPNET user's rights on the assembly DLL, it tells me I have full rights, so it's not a matter of file access.

And I pulled apart the reflection data to find that I'm depending only on mscorlib, which can't be the problem either.

I finally tried signing my RCW assembly just in case it was ASPNET not wanting to run unsigned code.

So... it looks my specific question is: what is it about the ASPNET environment that makes loading a RCW assembly (or any assembly?) so different from a console environment? Is there a document that addresses that?

Thanks to all.

Make a CAB file for PocketPc2003

AlexB4728-Apr-08 4:02

AlexB47

28-Apr-08 4:02

Hi,
I have a problem to make a CAB file for my project exe (create in Visual studio 2005, C#) into PocketPc 2003. When i execute a cab on a PDa with pocketpc 2003 I retrive an error: "It's not a valid CAB file for windows CE".
The CAB work perfectly on PDA with windows mobile 5.0.
Why? I can create a CAB file compatible with pocketpc2003?

Thanks a lot.

Alex

Cross Post. Please ignore

Pete O'Hanlon28-Apr-08 21:59

Pete O'Hanlon

28-Apr-08 21:59

See title

Deja View - the feeling that you've seen this post before.

My blog | My articles

Application.Run() Parameters

saneng28-Apr-08 3:08

saneng

28-Apr-08 3:08

i wanna know that Application.Run only takes only from objects as a parameter like
Application.Run (new MYfrm1);

OR it can also take parameter other than windows form like Class Objects?

Double Post

Giorgi Dalakishvili28-Apr-08 3:50

Giorgi Dalakishvili

28-Apr-08 3:50

Double Post - please ignore.

Giorgi Dalakishvili

#region signature
my articles
#endregion

How to write this code using IFileOperation for Vista

Mustanseer M S28-Apr-08 0:31

Mustanseer M S

28-Apr-08 0:31

Hello,

I have this piece of code which i am using in my application developed on VS2003. i have migrated the code to VS2005 and have cleaned the code, but now i have to port it to Vista.

The code uses SHFILEOPSTRUCT and SHFileOperation which are nwo deprecated and a new interface IFileOperation has been introduced for Vista. I did a lot of head banging but still i could not figure out how to modify my code except the use of SetOperationFlag() function of IFileInterface. So please see if you could help.

Here are the snippets

//For Deleting a file<br />
<br />
SHFILEOPSTRUCT shfileop;<br />
<br />
shfileop.hwnd = NULL;<br />
<br />
shfileop.wFunc = FO_DELETE;<br />
<br />
shfileop.pFrom = pstrfrom;<br />
<br />
shfileop.pTo = NULL;<br />
<br />
shfileop.fFlags = FOF_NOCONFIRMATION;<br />
<br />
shfileop.fAnyOperationsAborted = 0;<br />
<br />
shfileop.hNameMappings = 0;<br />
<br />
shfileop.lpszProgressTitle = 0;<br />
<br />
SHFileOperation(&shfileop);

I get the pFrom and pTo from LPCTSTR type strings. I would also like to know about the double null termination of strings.

Thanks and regards,

Mustanseer

Re: How to write this code using IFileOperation for Vista

Mike Dimmick28-Apr-08 3:00

Mike Dimmick

28-Apr-08 3:00

SHFileOperation is deprecated, not removed. Deprecation simply means that they have added a new method which they advise is used in future, and that they might remove the old way in future operating systems. However, IFileOperation is not available before Windows Vista which means that if you need to support older operating systems, SHFileOperation is the best choice.

The double null-termination is because SHFileOperation can work on a queue of items, not just a single item. Each item is a normal null-delimited string, and the queue is represented by all the item strings concatenated together. The end of the list is marked by an empty string, i.e. a single null character. To remove a single item, therefore, you pass the string (null-terminated) followed by another null, so it appears to be double-null-terminated.

Example: you want to delete items Item 1 and Item 2. Therefore you specify the string

Item 1<NUL>Item 2<NUL><NUL>

I have to admit, I can't see how you get hold of an IFileOperation pointer. They seem to have forgotten to document that.

DoEvents: Generating unexpected recursion since 1991

Re: How to write this code using IFileOperation for Vista

Mustanseer M S28-Apr-08 3:42

Mustanseer M S

28-Apr-08 3:42

Hi Mike,

I agree SHFileOperation is deprecated but i wish to replace it with Vista compatible interface. the new version of my application is concerned only with running on Vista and later versions. i have got the idea of how to modify the code for copying, moving etc. but pertaining to deletion i am yet unenlightened.

Also, there is one more problem that i am facing. The new IFileOperation interface is placed in an Interface Definition Language file named "ShObjIdl.idl". i don't know how to import this file into my program to support the interface.

This is where i relate to you that how to get hold of the IFileOperation pointer.

PS: I am running my code on Vista currently and trying to debug.

Thanks and regards
Mustanseer

about PDB files

sujithkumarsl27-Apr-08 18:28

sujithkumarsl

27-Apr-08 18:28

what is the use of PDB files on dotnet. i am developing a profiling application
shall i use the pdb file to point the exact code?

My small attempt...

Re: about PDB files

BJ Basañes27-Apr-08 19:28

BJ Basañes

27-Apr-08 19:28

what do you mean by "point to the exact code"?

here's the doc for pdb files:
http://msdn2.microsoft.com/en-us/library/ms241903(VS.80).aspx[^]

Let me know what you mean by your question so maybe I can elaborate more.

http://www.beyond-measure.net

Re: about PDB files

sujithkumarsl27-Apr-08 20:15

sujithkumarsl

27-Apr-08 20:15

as i said i am developing a profiling application.
in that i want to display the exact code using the pdb.

My small attempt...

Re: about PDB files

BJ Basañes27-Apr-08 22:03

BJ Basañes

27-Apr-08 22:03

Sorry about that, I guess I read too fast. I think the pdb won't do what you need though. The pdb file is basically used by the debugger to attach/link to its corresponding application. In the case of profiling, I've read before that .Net has a Profiling API.

BJ Basañes
http://www.beyond-measure.net

Re: about PDB files

sujithkumarsl27-Apr-08 22:28

sujithkumarsl

27-Apr-08 22:28

i just used that, but in the case of user defined methods i want to point out the exact code
suppose i have a method "SayHello()" in my app, after profiling that will show
classname SayHello() 0.0000002(sec)

This is done successfully, now i want to display the exact code inside the method "SayHello{}"

My small attempt...

Re: about PDB files

Pete O'Hanlon27-Apr-08 23:33

Pete O'Hanlon

27-Apr-08 23:33

As the code is run from IL, you can reverse it back into a version of the original (in the same way that Reflector does).

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: about PDB files

sujithkumarsl28-Apr-08 0:24

sujithkumarsl

28-Apr-08 0:24

assemblin and disassemblin i already did.
as i said now i want to diplay the exact code.

Can we use PDB for that? to display the code

My small attempt...

Re: about PDB files

Roger Alsing28-Apr-08 6:42

Roger Alsing

28-Apr-08 6:42

Yes the PDB file is the mapping between the IL code and the source file.

Blog: http://www.rogeralsing.com
Projects: http://www.puzzleframework.com

Re: about PDB files

Zoltan Balazs28-Apr-08 0:37

Zoltan Balazs

28-Apr-08 0:37

Yes, you can use the pdb file. The magic word here is the ISymbolReader.
See this discussion here[^]

Work @ Network integrated solutions | Flickr | A practical use of the MVC pattern

Re: about PDB files

sujithkumarsl28-Apr-08 18:12

sujithkumarsl

28-Apr-08 18:12

if i am having the source code file with me, can i display the source code using the line info from pdb?
how can i do that?

My small attempt...

Re: about PDB files

Zoltan Balazs28-Apr-08 20:07

Zoltan Balazs

28-Apr-08 20:07

I guess you can do that, at least the article I linked in does mention it.
You'll have to do the research, but since you writing a profiling app that shouldn't be so hard for you.
Most of the time you'll get directions here, not complete solutions.

Work @ Network integrated solutions | Flickr | A practical use of the MVC pattern

Re: about PDB files

sujithkumarsl28-Apr-08 22:38

sujithkumarsl

28-Apr-08 22:38

i know i know anyway i will continue the same will post if i get any info Smile | :)