January 22, 2013 at 1:48 pm
Hello wizards,
Got a major headache with a custom assembly.
I have a small assembly that reads a regkey to get a network dir path.
With that path I am trying to get the JPG files in that directory, load it as an image, rotate it 90 degrees and then write it out to an imagebox as a Byte(), setting the image box for database/mime-type:jpg.
The assembly works in Visual Studio under Fully Trusted in a windows app but when I switch to Partially Trusted it fails.
I have it testing with partially trusted because when I build the SSRS report in BIDS it seems to be running in partial trust mode.
I just need to get the security part working.
This is the error I get in partial trust:
Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
I've tried <Assembly: AllowPartiallyTrustedCallers>
Here's one of the VB functions:
Imports System
Imports System.Drawing
Imports System.IO
Imports System.Security
Imports System.Security.Permissions
Public Class test
Public Shared Function ReadImageFile(ByVal fileName As String) As Image
'Dim fp As New FileIOPermission(PermissionState.Unrestricted)
Dim bytes() As Byte = File.ReadAllBytes(fileName)
Dim img As Image
Dim ms As MemoryStream
'fp.Assert()
ms = New MemoryStream(bytes, 0, bytes.Length)
ms.Write(bytes, 0, bytes.Length)
img = Image.FromStream(ms, True)
ms.Dispose()
'CodeAccessPermission.RevertAssert()
Return img
End Function
End Class
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Mike Hahn - MCSomething someday:-)
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December 20, 2017 at 12:44 pm
I know this is old post but want to know, did you get any solution? I am facing the same issue.
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