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How to find a number in a string in C#?
To find a number in a string, use Regular Expressions.
We have set the Regex pattern to get number from a string.
Regex r = new Regex(@"\d+");
Now, use Match class in C# to set the string.
Match m = r.Match("Welcome! We are open 365 days in a year!");Use the Success property now to display the result if number is found in the string as shown in the following complete code −
Example
using System;
using System.Text.RegularExpressions;
class Demo {
static void Main() {
Regex r = new Regex(@"\d+");
Match m = r.Match("Welcome! We are open 365 days in a year!");
if (m.Success) {
Console.Write("Number: ");
Console.WriteLine(m.Value);
}
}
}Output
Number: 365
Updated on: 22-Jun-2020
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