Handling exceptions in a user controls

try
{
   // Do stuff
} catch (Exception ex)
{
   if (!ExceptionHandler.TryHandleException(ex))
   {
      throw;
   }
   // Log error
   // Handle all errors, for user controls set for example Visible = false
}

/// <summary>
/// The ExceptionHandler is a class to make it easier for the developer
/// to catch exceptions that is not critical for the application.
/// <example>
/// Example the developer wants to develop a user control that should
/// not be visible when something goes wrong – and not crash the whole web page.
/// </example>
/// </summary>
public class ExceptionHandler
{
   /// <summary>
   /// A list of exceptions those are not critical
   /// for the applications runtime environment.
   /// <remarks>
   /// This list is non finished list it must be updated when
   /// the code are updated.
   /// </remarks>
   /// <example><code>
   /// NullReferenceException is an exception can’t set the application
   /// in an inconsistent state
   ///
   /// But
   /// OutOfMemory is an exception that absolutely sets the application
   /// in an inconsistent state
   /// </code></example>
   /// </summary>
   private static readonly Type[] NonFatalExceptions = new[]
   {
      typeof(NullReferenceException),
      typeof(IndexOutOfRangeException),
      typeof(ArgumentException),
      typeof(ArithmeticException),
      typeof(SerializationException),
      typeof(WebException),
      typeof(IOException),
      typeof (ApplicationException)
   };
 
   /// <summary>
   /// Tries to handle the given exception and returns true
   /// if it's a non critical exception for the application.
   /// </summary>
   /// <param name="ex">The exeption to check.</param>
   /// <returns><c>True</c> if the exception can be handle;
   /// otherwise <c>false</c>.</returns>
   /// <code>
   /// try
   /// {
   /// throw new NullReferenceException();
   /// } catch (Exception ex)
   /// {
   /// if (!ExceptionHandler.TryHandleException(ex))
   /// {
   /// throw;
   /// }
   /// }
   /// </code>
   public static bool TryHandleException(Exception ex)
   {
      Type exceptionType = ex.GetType();
                                 
      foreach(Type t in NonFatalExceptions)
      {
         if (t.IsAssignableFrom(exceptionType))
         {
            return true;
         }
      }
 
      return false;
   }
}