Using catch without arguments

Question

What is the difference between:

catch
{
    MessageBox.Show(\"Error.\");
}

and:

catch (Exception ex)
{
    MessageBox.Show(         


        

Answer 1

I think they are the same. But the second case raised a compiler warning because you declare an exception you didn't use. I rather like the first one because you say explicitly that you don't use the exception. There is also a third one

catch (Exception)
{
    //do something
}

if you want to specify the type of exception but doesn't care about the exception itself.