Assembly Load problem in windows7 for .Net

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.NET3.5

My application loads a .dll at runtime

Assembly.Loadfile

When the application runs by right click + click on application , it searches for the .dll in the windows folder [ System32 folder ]

Sometimes if the application is delivered through an msi setup it works fine but for direct copy/paste deployement it always gives error that .dll could not be found.

Any help with this would be greatly appreciated.

Regards,
Ramlagan M

Updated on 30-August-2011
It is Managed dll.
Whenever I run the application it creates

icon of the application in taskbar.
Now if i right click on this taskbar icon

it shows me 3 menus
1. Close Window
2. Pin this program to taskbar
3. My Application [ say abc ]

Now if i click on abc it creates new instance of the application but this time
exe search for dll in system32 folder [ Assembly.Loadfile ] where it is not available.

Posted 24-Aug-11 23:49pm

Member 3761135

Updated 29-Aug-11 22:40pm

v4

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Slacker007 25-Aug-11 6:42am

Edit: readability.

4 solutions

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Abhinav S · Answer 1 · 2011-08-25T02:28:00

Solution 1

You must be using an unmanaged dll that needs to be registered on the system.
If you copy / paste, try registering the dll using RegSvr32.

Posted 25-Aug-11 2:28am

Abhinav S

Comments

koolprasad2003 25-Aug-11 10:05am

Nice! 5.

Abhinav S 25-Aug-11 10:07am

Thank you.

fjdiewornncalwe 25-Aug-11 10:18am

Agreed.

Abhinav S 25-Aug-11 10:19am

Thanks Marcus.

koolprasad2003 · Answer 2 · 2011-08-25T03:29:00

Solution 2

When u install your application with MSI, it will register your .dll. and when u copy/paste your directory structure and try to run application directly, your unregistered dll gives you error.

yes. as Abhinav said, register your dll with regsvr32 "dll file path".

Posted 25-Aug-11 3:29am

koolprasad2003

luisnike19 · Answer 3 · 2011-08-25T03:34:00

Solution 3

Just in case
How_to_use_the_regsvr32_utility_to_register_a_dll[^]

Posted 25-Aug-11 3:34am

luisnike19

mahendren · Answer 4 · 2011-08-29T23:08:00

In Windows 7 the System32 is a reserved location.
You may be having issue with dll's actually residing in the virtual store (or the app searching in the virtual store)

Can you try copying/pasting to a different location and calling Assembly.Load from this location.

PS: The virtual store is located here
C:\Users\[user name]\AppData\Local\VirtualStore