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Sandeep Singh


Check the given string is null or empty


Introduction :

In this tutorial we will see how to check the string is null or empty string or not using IsNullOrEmpty() mthod of string class in .NET Framwork with C# and VB.NET code example

IsNullOrEmpty() mthod is one of the important method of string class and frequently used among the programmer to check the string is null or empty.

IsNullOrEmpty() will return Boolean value true if the given string is null or empty string.

C# Sample code sample

using System;

namespace DotNetSpark.Tutorials
    class DotNetSpark
        static void Main(string[] args)
            // Declare string
            string strValue = "DotNetSpark";

            // Check the given string is null or empty or not
            bool result = string.IsNullOrEmpty(strValue);

            // Display result





VB.NET Sample example

Namespace DotNetSpark.Tutorials
	Class DotNetSpark
		Private Shared Sub Main(args As String())
			' Declare string
			Dim strValue As String = "DotNetSpark"

			' Check the given string is null or empty or not
			Dim result As Boolean = String.IsNullOrEmpty(strValue)

			' Display result


		End Sub
	End Class
End Namespace



Other Tutorials in the same Category:
  • How to find length or number of characters in a given string      
  • Compare two string using CompareTo Method of string class      
  • Check the word contains in a string or not?      
  • Merge or Concat two string value      
  • Check the string value Equals or not?      
  • Split the string based on delimiter and display or store      
  • Trim or remove white or extra spaces from given string      
  • Get the part or sub string from a given string      
  • Convert string into lowercase of a given string      
  • Convert all string into uppercase of a given string      
  • How to replace string with some other string value?      
  • Remove the specific character or word from a given string      
  • Insert word or characters at any position in a given string or sentence      
  • Display the reverse of the given string      
  • Find string, word or character in a given string      
  • Check the given string is null or empty

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