如何将“ 12-15”这样的字符串分成两个数字？

Question

My front-end application sends strings that look like this:

"12-15" 

to a back-end C# application.

Can someone give me some pointers as to how I could extract the two numbers into two variables. Note the format is always the same with two numbers and a hyphen between them.

Answer 1

 string stringToSplit = "12-15";
 string[] splitStringArray;
 splitStringArray = stringToSplit.Split('-');

splitStringArray[0] will be 12

splitStringArray[1] will be 15

Answer 2

int[] numbers = "12-15".Split('-')
        .Select(x => {
            int n;
            int.TryParse(x, out n);
            return n;
        })
        .ToArray();

Answer 3

Split the string into parts:

string s = "12-15";
string[] num = s.Split('-');
int part1 = Convert.ToInt32(num[0]);
int part2 = Convert.ToInt32(num[1]);

Answer 4

We call Split on a string instance. This program splits on a single character

string s ="12-15";
string[] words = s.Split('-');
foreach (string word in words)
{
    int convertedvalue = Convert.ToInt32(word ); 
    Console.WriteLine(word);
}

string[] ss= s.Split('-');
int x = Convert.ToInt32(ss[0]);
int y = Convert.ToInt32(ss[1]);

more info

Answer 5

Here is the correct version without the wrong code

string textReceived = "12-15";

string[] numbers = textReceived.Split('-');
List<int> numberCollection = new List<int>();
foreach (var item in numbers)
{
    numberCollection.Add(Convert.ToInt32(item));
}

Answer 6

You can use the below code to split and it will return string for each value, then you can typecast it to any type you wish to ...

string myString = "12-15-18-20-25-60";
string[] splittedStrings = myString.Split('-');
foreach (var splittedString in splittedStrings)
{
    Console.WriteLine(splittedString + "\n");
}
Console.ReadLine();

Answer 7

String numberString = "12-15" ;
string[] arr = numberString.Split("-");

Now you will get a string array , you can use parsing to get the numbers alone

int firstNumber = Convert.ToInt32(arr[0]);

Helpful answer related to parsing :

https://stackoverflow.com/a/199484/5395773

Answer 8

string str = null;
string[] strArr = null;
int count = 0;
str = "12-15";
char[] splitchar = { '-' };

strArr = str.Split(splitchar);
for (count = 0; count <= strArr.Length - 1; count++)
{
    MessageBox.Show(strArr[count]);
}

Answer 9

You could convert that string explicitly to an integer array using Array.ConvertAll method and access the numbers using their index, you can run the below example here .

using System;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var number = "12-15";
            var numbers = Array.ConvertAll(number.Split('-'), int.Parse);
            Console.WriteLine(numbers[0]);
            Console.WriteLine(numbers[1]);
        }
    }
}

Or you can explicitly convert the numeric string using int.Parse method, the int keyword is an alias name for System.Int32 and it is preffered over the complete system type name System.Int32 , you can run the below example here .

using System;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var number = "12-15";
            var numbers = number.Split('-');
            var one = int.Parse(numbers[0]);
            var two = int.Parse(numbers[1]);
            Console.WriteLine(one);
            Console.WriteLine(two);
        }
    }
}

Additional read: Please check int.Parse vs. Convert.Int32 vs. int.TryParse for more insight on parsing the input to integer