C# Char IsNumber(String, Int32)

Description

Char IsNumber(String, Int32) indicates whether the character at the specified position in a specified string is categorized as a number.

Syntax

Char.IsNumber(String, Int32) has the following syntax.

public static bool IsNumber(
  string s,
  int index
)

Parameters

Char.IsNumber(String, Int32) has the following parameters.

• s - A string.
• index - The position of the character to evaluate in s.

Returns

Char.IsNumber(String, Int32) method returns true if the character at position index in s is a number; otherwise, false.

Example

The following example demonstrates IsNumber.

/*from   ww  w. ja v  a 2 s. com*/
using System;

public class MainClass {
  public static void Main() {
    string str = "non-numeric";

    Console.WriteLine(Char.IsNumber(str, 3));  // Output: "False"
  }
}

The code above generates the following result.