ReflectionPermission.FromXml(SecurityElement) Method

Definition

Namespace:

System.Security.Permissions

Assembly:

System.Security.Permissions.dll

Reconstructs a permission with a specified state from an XML encoding.

public:
 override void FromXml(System::Security::SecurityElement ^ esd);

public override void FromXml (System.Security.SecurityElement esd);

override this.FromXml : System.Security.SecurityElement -> unit

Public Overrides Sub FromXml (esd As SecurityElement)

Parameters

esd

SecurityElement

The XML encoding to use to reconstruct the permission.

Exceptions

ArgumentNullException

The esd parameter is null.

ArgumentException

The esd parameter is not a valid permission element.

-or-

The esd parameter's version number is not valid.

Examples

The following code example shows the behavior of the FromXml method. This example is part of a larger example provided for the ReflectionPermission class.

Note

The code example is intended to show the behavior of the method, not to demonstrate its use. In general, the methods of permission classes are used by the security infrastructure; they are not typically used in applications.

private static void ToFromXmlDemo()
{
    ReflectionPermission memberAccessPerm = new ReflectionPermission(ReflectionPermissionFlag.MemberAccess);
    ReflectionPermission restrictedMemberAccessPerm = new ReflectionPermission(PermissionState.None);
    restrictedMemberAccessPerm.FromXml(memberAccessPerm.ToXml());
    Console.WriteLine("Result of ToFromXml = " +
        restrictedMemberAccessPerm.ToString());
}

    Private Shared Sub ToFromXmlDemo()
        Dim memberAccessPerm As New ReflectionPermission(ReflectionPermissionFlag.MemberAccess)
        Dim restrictedMemberAccessPerm As New ReflectionPermission(PermissionState.None)
        restrictedMemberAccessPerm.FromXml(memberAccessPerm.ToXml())
        Console.WriteLine("Result of ToFromXml = " + restrictedMemberAccessPerm.ToString())

    End Sub
End Class