Why we use static class?

Pramod Gupta

9y1.1kVisual Basic .NET

Que 1) Why we use static class?

10 Replies

Know the answer? Post it — somebody with the same question will find it here.

Ehsan Sajjad9y ago
When we want to share only one instance of the class with all, which means that every time that class is accessed there is only one instacne behind the scenes that is used, it is useful when we create helper classes that contain methods which will be used in different parts of application. Consider Convert class in .NET base class libraries, it contains different kind of methods to convert a particular string to integer,float, decimal etc, it is static becasue nobody would need to create it's instances, it has common funcationality which is used by callers at different parts of their application code.

The following post explains it very well why to use static

http://softwareengineering.stackexchange.com/questions/103914/why-and-when-should-i-make-a-class-static-what-is-the-purpose-of-static-key

Hope that helps to understand why we need and where they are useful :)
v m9y ago
Hi
Since you are discussing about static class, can any one of you explain what happens in the long run when we use static class? Do we run into memory issues?

Thanks
VM
Naveen Bisht9y ago
To get the method,data in application any where without createing object of class.
Rajeesh Menoth9y ago
Hi Pramod,

We can access all static method without the creation of objects.

Code :
using System;

public class Program
{
    static string str = "Hello World !!";
    public static class Test
    {
        public static string Message()
        {
            return str;
        }
    }
    public static void Main()
    {
        Console.WriteLine(Program.Test.Message());
    }
}
Demo :
https://dotnetfiddle.net/W5CExd
Ayappan Alagesan9y ago
To avoid creating instance for a class.
Avoid the class to inherit with normal class.
Easy to access method and propertites.
Nitin Sontakke9y ago
...and Pramod Gupta only asked the question!
Bikesh Srivastava9y ago
@pramod gupta is correct
Guest User9y ago
https://msdn.microsoft.com/en-IN/library/79b3xss3.aspx
Guest User9y ago
Why to use static class? If there is a requirement that we don’t need to create the instance of the class but we want to access their class members, then we create class as static.
Khaja Moizuddin9y ago
whenever we will declare a class by using static keywork is nothing but a static class.
using static class we can access all static method without the creation of objects.