When are C# “using” statements most useful?

Question

So a using statement automatically calls the dispose method on the object that is being \"used\", when the using block is exited, right?

But when is this necessary/benef

Answer 1

Here's what using really does (based on your example)

Font font1 = new Font(...);
try
{
    // code that uses font...
}
finally
{
    if (font1 != null)
        font1.Dispose();
}

So you don't need to worry about exception making your variable not disposed.