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This article mainly explains "how to use the ADO.NET permission set". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to use the ADO.NET permission set.

The .NET Framework provides role-based security and code access security (CAS), both of which can be implemented through the common infrastructure provided by the common language runtime (CLR). For unmanaged code, most applications can be executed with user or principal permissions. As a result, when a user with elevated privileges runs malware or software that contains errors, the computer system may be corrupted and private data may be compromised.

Enable partial trust with custom permission set

To enable System.Data.SqlClient permissions for a specific zone, the system administrator must create a custom permission set and set it to the permission set for the specific zone. The default permission set, such as LocalIntranet, cannot be modified. For example, to add System.Data.SqlClient permissions to code where Zone is LocalIntranet, the system administrator can copy the permission set of LocalIntranet, rename it to "CustomLocalIntranet", add System.Data.SqlClient permissions, import the CustomLocalIntranet permission set using the Code access Security Policy tool (Caspol.exe), and then set the LocalIntranet_Zone permission set to CustomLocalIntranet.

Sample ADO.NET permission set

The following is a sample permission set for the SQLServer.NETFramework data provider in a partially trusted scenario.

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