C# Program to Demonstrate NullReference Exception


This is a C# Program to illustrate NullRefernce exception.

Problem Description

This C# Program Illustrates NullRefernce Exception.

Problem Solution

Here it indicates that you are trying to access member fields, or function types, on an object reference that points to null.

Program/Source Code

Here is source code of the C# Program to Illustrate NullRefernce Exception. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

 * C# Program to Illustrate NullRefernce Exception
using System;
class Program
    static void Main()
            string value = null;
            if (value.Length == 0) 
        catch(NullReferenceException e)
Program Explanation

This C# program is used to illustrate NullReference exception. Initialize an value of ‘value’ variable as null. If condition statement is used to check the length of the value of ‘value’ variable is equal to 0, if the condition is true then execute the statement.

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Indicates that trying to access member fields, or function types, on an object reference that point to null. Using try and catch, an error message is displayed when the error occurs.

Runtime Test Cases
Object Reference not set to an Instance of an Object

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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