I am a newbie programmer, trying to do something with shell functionality to open up a file or application. My boss has it in a number of his applications, and it seems straight forward, but I keep getting this exception. One site says you need to have service pack 1.1, which I already do.

I started with this, based on my boss's code:
Shell("notepad.exe", AppWinStyle.NormalFocus, True)

I looked around and found this, but it still does not work:
System.Diagnostics.Process.Start("notepad.exe")

Any help would be appreciated.
Jesica

Are you getting an error? If so, what is it.

System.Diagnostics.Process.Start("notepad.exe")

works for me.

J

Hi J,
This is the error I get.

System.Security.SecurityException: Request for the permission of type System.Security.Permissions.SecurityPermission, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed.
   at System.Security.CodeAccessSecurityEngine.CheckToke nBasedSetHelper(Boolean ignoreGrants, TokenBasedSet grants, TokenBasedSet denied, TokenBasedSet demands)
   at System.Security.CodeAccessSecurityEngine.CheckSetH elper(PermissionSet grants, PermissionSet denied, PermissionSet demands)
   at Microsoft.VisualBasic.Interaction.Shell(String Pathname, AppWinStyle Style, Boolean Wait, Int32 Timeout)
   at _13F_Report.Form1.OpenNP() in \\file3\Home\jshae\My Documents\Visual Studio Projects\13F Report\Form1.vb:line 125


I've tried many different ways of doing it, but always get the same error:
ATTEMPT 1:
Shell("C:\Windows\System32\Notepad.exe", AppWinStyle.NormalFocus, True)

ATTEMPT 2:
Process.Start("notepad.exe")

ATTEMPT 3:
System.Diagnostics.Process.Start("notepad.exe")

ATTEMPT 4:
Dim MyProcess As New ProcessStartInfo("notepad.exe") MyProcess.WindowStyle = ProcessWindowStyle.Normal
Process.Start(MyProcess)

ATTEMPT 5:
Dim sinfo1 As System.Diagnostics.ProcessStartInfo = Nothing
sinfo1 = New System.Diagnostics.ProcessStartInfo("notepad.exe")
System.Diagnostics.Process.Start(sinfo1)

Well, I am going to shoot for the obvious and say that security is the problem and not your code. Judging from this:

\\file3\Home\jshae\My Documents\Visual Studio Projects\13F Report\Form1

it looks like you are running this project on a network share. Network shares are not fully trusted so the code doesn't execute normally. Try copying your project to your local machine and see if it works.

---------------------------------------------------------------
System.Diagnostics.Process.Start("notepad.exe")
---------------------------------------------------------------

should work.

J

You're right. It works fine on my machine at home. Simple!
Thanks.

You welcome. :)

J

ok i know it works if u run it off a network but what if u want to run it on a network. how can i fix it so that it is trusted and runs over a network?