问如果我在Medium Trust下运行，我如何以编程方式进行判断？

EN

public static AspNetHostingPermissionLevel GetTrustLevel()
{
    foreach (AspNetHostingPermissionLevel trustLevel in new AspNetHostingPermissionLevel[]
                                                            {
                                                                AspNetHostingPermissionLevel.Unrestricted,
                                                                AspNetHostingPermissionLevel.High,
                                                                AspNetHostingPermissionLevel.Medium,
                                                                AspNetHostingPermissionLevel.Low,
                                                                AspNetHostingPermissionLevel.Minimal
                                                            })
    {
        try
        {
            new AspNetHostingPermission(trustLevel).Demand();
        }
        catch (System.Security.SecurityException)
        {
            continue;
        }

        return trustLevel;
    }

    return AspNetHostingPermissionLevel.None;
}

public AspNetHostingPermissionLevel GetCurrentTrustLevel()
{
    foreach (AspNetHostingPermissionLevel trustLevel in Enum.GetValues(typeof(AspNetHostingPermissionLevel)))
    {
        try
        {
            new AspNetHostingPermission(trustLevel).Demand();
        }
        catch (System.Security.SecurityException)
        {
            continue;
        }
        return trustLevel;
    }
    return AspNetHostingPermissionLevel.None;
}