Security Exception
 

I'm trying to modify the SharePoint site so it'll take both type of
authentication providers & anonymous access.

I've modified the web.config file. When I started the debugging after all
my codings are done, I got this error:

Server Error in '/' Application.

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.Web.AspNetHostingPermission, System,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

An unhandled exception was generated during the execution of the current web
request. Information regarding the origin and location of the exception can
be identified using the exception stack trace below.

Stack Trace:


[SecurityException: Request for the permission of type
'System.Web.AspNetHostingPermission, System, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
System.Reflection.Assembly._GetType(String name, Boolean throwOnError,
Boolean ignoreCase) +0
System.Reflection.Assembly.GetType(String name, Boolean throwOnError,
Boolean ignoreCase) +41
System.Web.UI.Util.GetTypeFromAssemblies(ICollecti on assemblies, String
typeName, Boolean ignoreCase) +119
System.Web.UI.TemplateParser.GetType(String typeName, Boolean ignoreCase,
Boolean throwOnError) +179
System.Web.UI.TemplateParser.ProcessInheritsAttrib ute(String
baseTypeName, String codeFileBaseTypeName, String src, Assembly assembly) +95

System.Web.UI.TemplateParser.PostProcessMainDirect iveAttributes(IDictionary
parseData) +192

Can someone please give me some advice of what I should do to fix this issue?

Many thanks in advance!
JH