How to call a method with valuetype . Its Urgetnt please

Question

I have written a virtual method . I want to call that method with a valuetype... For ex: int a=23; String str=a.ToString(); //str=23; Because ToString is a virtual method allows us to call with valutype.

Sreekanth Reddy · Answer

1) Int is a pre-defined class. 2)Add is our method which is written by us. If you want our methods to be supported to the pre-defined classess we needs to to go with Extension Methods . For knowing about Exension Methods : http://www.tutorialsteacher.com/csharp/csharp-extension-method Hope you understood the point. If not getting come back with your query... Thank you.

Jaish Mathews · Answer

If values are same, var v = i.Equals(obj); return true without any conversion and shouldn't use == operator here whenever Object used. You should look deep in to difference between == operator and .Equals(). e.g. Ref https://coding.abel.nu/2014/09/net-and-equals/

Laxmidhar Sahoo · Answer

without extension can overrite class Exts { public string Name { get ; set ; } public int Age { get ; set ; } public override string ToString() { return "Person: " + Name + " " + Age; } }

Hemalatha Sunnapu · Answer

public static class Ex { static bool res; public static bool EqualsMethod(this int i, Object obj) { if((object)i==obj) { res=true; } else {res = false;} return res; } } even though i value and obj are same it is giving false ???

Jaish Mathews · Answer

Yes, as told below, extension methods are the way. You want to know that rules to define extension methods are predefined in C# and to follow the rules as per document. Here put 2 sample extension methods on int, one for double the value and another for adding with a value. public static class IntExtension { public static int DoubleMe( this int x) { return 2 * x; } public static int Add( this int x, int y) { return x + y; } } int i = 100; int d = i.DoubleMe(); //200 will return int s = i.Add(200); //300 will return You call them like below.

Laxmidhar Sahoo · Answer

the tostring methos want to define in your calss

Hemalatha Sunnapu · Answer

helllo sahoo, did u get my question

Laxmidhar Sahoo · Answer

string str = Convert.ToString(a);

Hemalatha Sunnapu · Answer

Ok, it works for struct, but i want to call it int a=10; a.Add(); which is not supportble by struct right.

Sreekanth Reddy · Answer

Struct is a value Type. I think the struct one which I posted previously was the answer... Please check it once.

Sreekanth Reddy · Answer

Exactly... Are you expecting for reference type ? Then take a class instead of struct...

Sreekanth Reddy · Answer

I think we needs to take the help of struct. Because struct is a value type. public struct Test { public void Add() { } } Create instance in another class and call the method. public class Abc { Test obj = new Test(); obj.Add(); } Hope this helps. Mark as answer if it help. Else come up with a query. Thank you.