GetHashCode() method

14y1.7kVisual Basic .NET

http://www.c-sharpcorner.com/uploadfile/dhananjaycoder/system-object-a-look-on-mother-of-all-managed-classes/

Normally Student student = new Student();

In this program Student student = new Student { RollNumber = "1" }; I couldn't understand this. Any ones knows please explain.

using System;

namespace ConsoleApplication8
{
class Program
{
static void Main(string[] args)
{

Student student = new Student { RollNumber = "1" };

int hash1 = student.GetHashCode();

Console.WriteLine(hash1);

Console.ReadKey(true);
}
}

class Student
{
public string RollNumber { get; set; }
public string Name { get; set; }

public override int GetHashCode()
{
//return base.GetHashCode();
return Convert.ToInt32(RollNumber) * 100;
}
}
}

2 Replies

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14y ago
Thank you for your explanation.
Vulpes14y ago
That line is what's called an 'object initializer'.

It creates a new Student object using its default constructor (you can omit the parentheses if there are no arguments) and then sets its RollNumber property to "1". You could also have set the Name property at the same time:

Student student = new Student { RollNumber = "1", Name = "Bill" };