MSCORLIB.DLL - 'System.Security.SecurityException' 2

[pfildes]

I'm new to VB.NET and have come across a sample application which resembles a basic file explorer. Having opened the project, when I run it I get a message stating;

An unhandled exception of type 'System.Security.SecurityException' occurred in mscorlib.dll
Additional information: Request for the permission of type System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed.

The program breaks at the following line;

Dim Drives() As String
 -> Drives = System.IO.Directory.GetLogicalDrives()

Can anybody please tell me what is wrong?.

I have .NET Framework 1.1 installed.

 

[ThatRickGuy]

Are you running the app locally? or from a network share?

-Rick

VB.Net Forum forum796 forum855 ASP.NET Forum
I believe in killer coding ninja monkeys.

 

[chiph]

Are you running it off a network drive? .NET has different security rules when you're not running off a local drive.

Also, the MSDN docs say you'll get this if you don't have the SecurityPermissionFlag.UnmanagedCode value (scroll down to the bottom of Directory.GetLogicalDrives().

Chip H.


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[pfildes]

Yes, I'm developing on a network drive.

Paul

 

[ThatRickGuy]

Open your control panel -> Admin Tools -> .Net Wizards -> Trust Assembly -> follow wizard steps to trust you assembly.

Note that if you trust an assembly you may have to re-trust it each time it's strong name changes. If you are going to develope on a network share you may want to raise the Intranet Zone trust level.

-Rick

VB.Net Forum forum796 forum855 ASP.NET Forum
I believe in killer coding ninja monkeys.

 

[SBendBuckeye]

Try applying this attribute to your class or property:

<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _

I'm not sure whether it will help or not but its worth a try. Good Luck!


Have a great day!

j2consulting@yahoo.com

 

[pfildes]

I am now developing on my local drive so I no longer have the problem, however when I come to developing on a network drive I have a couple of solutions.

Thanks to ThatRickGuy, chiph & SBendBuckeye for their help!!