How to make a string of all texts C#

Question

I am a beginner and I am doing a calculator with a console application in C#, I want to know how to make a string includes all the texts and words. For example :
_ Enter the first number!
: stack
_ Error, cannot use texts in division!

So, I want to make a code like that

If (firstnumber == string) (not int or double){

Console.WriteLine("Error, cannot use texts in division");

}

Please, help me.

                                   Thanks

I think you need to explain better what are you trying to do. Do you want to check if the user doesn't type numbers? — Steve, Feb 01 '19 at 18:47
Yes, bro if the user doesn't type a number, the calculator will write "Error" — annasdiaber, Feb 01 '19 at 18:49

score 2 · Answer 1 · edited Feb 01 '19 at 18:57

2

I think is this you wont.

string input = Console.ReadLine();

try
{
    int firstNumber = int.Parse(input);
}
catch (Exception)
{
    Console.WriteLine("Error, cannot use texts in division");
}

edited Feb 01 '19 at 18:57

Aleks Andreev

7,016
8
29
37

answered Feb 01 '19 at 18:52

LeoFraietta

192
5
13

2

It looks like a `TryParse` is better for this case. But even with `Parse` approach catching all type of exceptions is not a best idea. How about to catch only `FormatException`? – Aleks Andreev Feb 01 '19 at 19:02
You are right, but the question was marked as duplicate an i thing the best way is like @PilouPili post on link. – LeoFraietta Feb 01 '19 at 19:10

How to make a string of all texts C#

1 Answers1