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handel this error Object reference not set to an instance of an object.'

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Muhammad Asadullah answered on July 23, 2023 Popularity 10/10 Helpfulness 1/10

answer handel this error Object reference not set to an instance of an object.'

related object reference not set to an instance of an object.'

related handel this error Object reference not set to an instance of an object.'

handel this error Object reference not set to an instance of an object.'

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public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

public class Program
{
    public static void Main()
    {
        Person person = null; // Simulate a null object.

        // Using the null-conditional operator.
        string firstName = person?.FirstName ?? "Unknown";
        Console.WriteLine($"First Name: {firstName}");

        // Traditional null check.
        if (person != null)
        {
            string lastName = person.LastName;
            Console.WriteLine($"Last Name: {lastName}");
        }
        else
        {
            Console.WriteLine("Last Name: Not available");
        }
    }
}

Popularity 10/10 Helpfulness 1/10 Language csharp

Source: chat.openai.com

Tags: c# instance object-reference set this

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Contributed on Jul 23 2023

Muhammad Asadullah

0 Answers Avg Quality 2/10

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object reference not set to an instance of an object.'

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// Example code snippet causing NullReferenceException
string myString = null;
int length = myString.Length; // Throws NullReferenceException

// Solution: Ensure the object is initialized before accessing its members
string myString = null;
if (myString != null)
{
    int length = myString.Length;
    // Rest of the code using 'length'
}
else
{
    // Handle the case when the object is null
    Console.WriteLine("The object is null.");
}

Popularity 10/10 Helpfulness 1/10 Language csharp

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

handel this error Object reference not set to an instance of an object.'

Comment

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

public class Program
{
    public static void Main()
    {
        Person person = null; // Simulate a null object.

        // Using the null-conditional operator.
        string firstName = person?.FirstName ?? "Unknown";
        Console.WriteLine($"First Name: {firstName}");

        // Traditional null check.
        if (person != null)
        {
            string lastName = person.LastName;
            Console.WriteLine($"Last Name: {lastName}");
        }
        else
        {
            Console.WriteLine("Last Name: Not available");
        }
    }
}

Popularity 10/10 Helpfulness 1/10 Language csharp

Source: chat.openai.com

Tags: c# c

Link to this answer
Share Copy Link

Contributed on Jul 23 2023

Muhammad Asadullah

0 Answers Avg Quality 2/10

handel this error Object reference not set to an instance of an object.'

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handel this error Object reference not set to an instance of an object.'

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object reference not set to an instance of an object.'

handel this error Object reference not set to an instance of an object.'

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