Show Authorization Error Message In MVC 2 Application?

Jul 10, 2010

I'm using the Authorize attribute to filter controller actions based on user roles, but if an unauthorized action is attempted, the user is redirected back to the login page. As I user I would find this confusing and irritating. How can I instead show an error message informing the user they need certain roles, and remain on the view where they attempted an action?

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Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

Line 7: Dim oBF As New BinaryFormatter()
Line 8: Dim oFS As FileStream
Line 9: Dim strPath As String = Path.GetTempPath & "schedule.Bin"
Line 10:
Line 11: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Source File: D:Hosting4423045htmlplease-godappointmentscheduler.aspx.vb Line: 9

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Imports System.IO
Imports System.Runtime.Serialization.Formatters.Binary

Partial Class appointmentscheduler
Inherits System.Web.UI.Page
Dim arrCalendar(12, 31) As String
Dim oBF As New BinaryFormatter()
Dim oFS As FileStream
Dim strPath As String = Path.GetTempPath & "schedule.Bin"
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If (Cache("arrCalendar") Is Nothing) Then
If (File.Exists(strPath)) Then
oFS = New FileStream(strPath, FileMode.Open)
arrCalendar = DirectCast(oBF.Deserialize(oFS), Array)
Cache("arrCalendar") = arrCalendar
End If
arrCalendar = Cache("arrCalendar")
End If
End Sub
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oBF.Serialize(oFS, arrCalendar)
Cache("arrCalendar") = arrCalendar
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If arrCalendar(e.Day.Date.Month, e.Day.Date.Day) <> "" Then
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End Sub
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Me.myNotes.Text = ""
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Me.myNotes.Text = arrCalendar(Me.myCalendar.SelectedDate.Month, Me.myCalendar.SelectedDate.Day)
End If
End Sub
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I have insert.aspx page that users can enter data and when they click on insertbutton it insert data into database below is SP 

create procedure [dbo].[InsertFreeState2]
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I am building an intranet website. And I am still unsure of how to implement the security of the website. I am using ASP.NET MVC 3.

Anyone in the company can access the website. It is a recognition system where you can nominate an employee for an award. Currently I am not using any type of authentication. I have a roles table that contains roles and an association table that specifies which user contain what roles, these roles are mainly administrator-type roles. If a user does belong in these roles then he/she can still access various parts of the website.

Would I need to use the built-in membership for this? Or would I need to create a custom membership for this? We don't use a login page. If the user does not have roles to access a view then he/she is redirected to another page.

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I am using ASP.NET MVC 3 and am trying to do something that should be really straight forward...

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