System.Convert.ToInt vs (int)

Question

I noticed in another post, someone had done something like:

double d = 3.1415;
int i = Convert.ToInt32(Math.Floor(d));

Why did they use the

Answer 1

You can use Convert when you have a string that you want to convert to an int

int i = Convert.ToInt32("1234");

Convert and casting will both throw an exception if they fail.

i.e, this will still throw an exception, it will not return 0:

Convert.ToInt32("1234NonNumber");

In many cases Convert and casting will have the same result, but a cast is often times easier to read.