How to get the type of an exception

Hello all,

I am tasked with creating a base exception handler that will handle a
bunch of clean-up that needs to happen based on the type of exception
thrown. So, for example, I will have (at least in my initial thoughts)
a base class like:

public abstract class BaseExceptionHandler
{

     public void HandleException(Exception  ex)
     {
          Do something based on exception type;
     }

Then each inherited exception type will declare like:

public abstract class NewExceptionHandler : BaseExceptionHandler
{

     Any new or overridden logic

Then the implementation needs to look like:

NewExceptionHandler exHandler = new NewExceptionHandler();

try
{
     Whatever
catch (MissingDependencyException ex)
{
     exHandler.HandleException(ex);
catch (DividebyzeroException ex)
{
    exHandler.HandleException(ex);
…
How, given that all of these inherit from Sytem.Exception do I find
out the actual type of the exception thrown? I know I am missing
something obvious…

Thanks in advance!

rbr