C# String IsNullOrWhiteSpace() method

by Online Tutorials Library July 22, 2022

C# String IsNullOrWhiteSpace()

The C# IsNullOrWhiteSpace() method is used to check whether the specified string is null, or consists only of white-space characters. It returns boolean value either True or False.

Signature

Parameter

str: it is a string parameter which is used to check null, white-space in string.

Return

It returns boolean value.

C# String IsNullOrWhiteSpace() Method Example

 using System;      public class StringExample        {           public static void Main(string[] args)          {              string s1 = “Hello C#”;            string s2 = “”;            string s3 = ” “;            bool b1 = string.IsNullOrWhiteSpace(s1);            bool b2 = string.IsNullOrWhiteSpace(s2);            bool b3 = string.IsNullOrWhiteSpace(s3);            Console.WriteLine(b1);// returns False             Console.WriteLine(b2);// returns True             Console.WriteLine(b3);// returns True         }       }   

Output:

False True True

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C# String IsNullOrWhiteSpace() method

C# String IsNullOrWhiteSpace()

Signature

Parameter

Return

C# String IsNullOrWhiteSpace() Method Example

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