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I am trying to develop a text-to-speech editor in .NET 3.5 using C#.
I encountered the following exception: System.Security.Permissions.SecurityPermission.
How to handle it?
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The system is saying that there has been an attempt to do something that is not allowed according to the current policy. More information is needed to give good advice here:
1) What is the full text of the exception message? There are a dozen or so situations that can cause a SecurityPermission so this is important. Specifically, there is a flag field that indicates the exact nature of the security violation.
2) What is the environment? Are the files stored locally, or on a network share? Apps run from a network share have always been partial-trust prior to 3.5 SP1. Do you have .NET 3.5 SP1 installed?