System.Security.SecurityManager.SecurityManager.ResolvePolicy C# (CSharp) Method

		public static PermissionSet ResolvePolicy (Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, out PermissionSet denied)
		{
			PermissionSet resolved = ResolvePolicy (evidence);
			// do we have the minimal permission requested by the assembly ?
			if ((reqdPset != null) && !reqdPset.IsSubsetOf (resolved)) {
				throw new PolicyException (Locale.GetText (
					"Policy doesn't grant the minimal permissions required to execute the assembly."));
			}

			// do we check for execution rights ?
			if (CheckExecutionRights) {
				bool execute = false;
				// an empty permissionset doesn't include Execution
				if (resolved != null) {
					// unless we have "Full Trust"...
					if (resolved.IsUnrestricted ()) {
						execute = true;
					} else {
						// ... we need to find a SecurityPermission
						IPermission security = resolved.GetPermission (typeof (SecurityPermission));
						execute = _execution.IsSubsetOf (security);
					}
				}

				if (!execute) {
					throw new PolicyException (Locale.GetText (
						"Policy doesn't grant the right to execute the assembly."));
				}
			}

			denied = denyPset;
			return resolved;
		}