by Sai gowtham

How to check if a string is empty in C#

In this tutorial, we are going to learn about how to check if a C# string is empty or null using the string.IsNullOrEmpty() method.

Checking the empty string

To check if a given string is empty or not, we can use the string.IsNullorEmpty() method.

The string.IsNullorEmpty() method accepts the string as an argument and returns true if a given string is null or an empty string ("") otherwise it returns false if a string is not empty.

Here is an example:

using System;
class Check {
  static void Main() {
     string name = "";
     if (string.IsNullOrEmpty(name)) {
          Console.WriteLine("name string is empty");
     }else{
         Console.WriteLine("name string is not empty");
     }
  }
}

Similarly, we can also use the string.Length property to check if a string is empty or not in C#.

using System;
class Check {
  static void Main() {

     string name = "";
     int n = name.Length;
     if (n == 0) {
          Console.WriteLine("name string is empty");
     }else{
         Console.WriteLine("name string is not empty");
     }

  }
}

Note: The string.Length property returns the total number of characters in a string.

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