Cutting string and converting it

Vulpes14y ago

Accepted answer

To get the first letter as a string you can do:

s = s.Substring(0,1)

or to get it as a char:

char c = s[0];

Vulpes14y ago

You didn't but that seemed to me to be the implication of your post

Sam Hobbs14y ago

Where did I say we should always use TryParse? I certainly did intend to say however that we should not always use Parse.

Vulpes14y ago

Although you should use int.TryParse most of the time, you shouldn't always use it.

If you know for sure that the string you're parsing is numeric (which it sounds from your opening post that you do) then it's more efficient to use int.Parse which has a simpler implementation.

Sam Hobbs14y ago

Note that developers often use Parse and then the code crashes when the string does not have a number. I suggest using Int32.TryParse instead and then the program will not crash with bad data.

sabine14y ago

Thank you for your quick reply (as usual :) )
And if I want to read the first letter of a string?

Vulpes14y ago

Try:

string s = "1024t"; // or whatever

s = s.Substring(0, s.Length - 1);

int i = int.Parse(s);