When to use a Cast or Convert

Question

I am curious to know what the difference is between a cast to say an int compared to using Convert.ToInt32(). Is there some sort of performance gai

Answer 1

See Diff Between Cast and Convert on another forum

Answer

The Convert.ToInt32(String, IFormatProvider) underneath calls the Int32.Parse (read remarks).
So the only difference is that if a null string is passed it returns 0, whereas Int32.Parse throws an ArgumentNullException.
It is really a matter of choice whichever you use.

Personally, I use neither, and tend to use the TryParse functions (e.g. System.Int32.TryParse()).

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UPDATE

Link on top is broken, see this answer on StackOverflow.