Configuration :: FileIOException When Accessing Local File?
May 11, 2010
I am attempting to write an assembly that is hosted by a Web page on IIS. Everything works until I try to read a file from the file system, when I get the following error:
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; GTB6.4; SLCC1; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.5.30729; .NET CLR 3.0.30729)
Timestamp: Tue, 11 May 2010 20:10:22 UTC
Message: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
So...I tried the example program found here, which has a similar use:
http://msdn.microsoft.com/en-us/library/system.security.allowpartiallytrustedcallersattribute.aspx
I compiled and published the application, but all I get is a page with a big rectangle and a little icon in the upper left corner, with no error messages. This is the same behavior I get in my own application when I give it a strong name key. (Without the strong name key, it runs properly, but gets the exception above.)
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