Error descriptions?

Does any one know where I could get mor information on errors that I get from my .NET.

I got this error and i would like to know what my fault could be:

An unhandled exception of type 'System.Security.SecurityException' occurred in mscorlib.dll

Additional information: Request for the permission of type System.Security.Permissions.FileIOPermission, mscorlib, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed.

Today I tried to use some code I used (successful, and error-free) last week, I got that errror this time. Could someone help me please?

The max information that I've been able to get out of the system is with something like the following,.....

Code:

---

Catch ex As Exception
    mb.Show(ex.Message & " - " & ex.StackTrace)

---

thx, I allready found what my error was, I wos running my app from an network disk, it didn't find some dll's
thanks though.

OK , try something else to get the source of error (your app , external app ..)
It's better your create a function that trap any error and returns a discriptive msgs.

VB Code:

Try
            Dim frm As Form1
            frm.Name = "error"
        Catch x As Exception
            MsgBox(x.Source)
        End Try