C# Char IsLetterOrDigit(String, Int32)

Description

Char IsLetterOrDigit(String, Int32) indicates whether the character at the specified position in a specified string is categorized as a letter or a decimal digit.

Syntax

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

public static bool IsLetterOrDigit(
  string s,
  int index
)

Parameters

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

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

Returns

Char.IsLetterOrDigit(String, Int32) method returns true if the character at position index in s is a letter or a decimal digit; otherwise, false.

Example

The following code example demonstrates IsLetterOrDigit.

//from   w w  w  . ja  v a  2 s .  c o  m
using System;

public class IsLetterOrDigitSample {
  public static void Main() {
    string str = "newline:\n";

    Console.WriteLine(Char.IsLetterOrDigit(str, 8));  // Output: "False", because it's a newline
  }
}

The code above generates the following result.