If I declared class MyClass,am not getting any error when created object like MyClass obj=new MyClass(); Why?

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Hi All

C#

namespace MyNamespace
{
    public class MyClass<string>
    {
        //my code goes here
    }
    public class Demo
    {
        public static void main()
        {
            MyClass<int> obj = new MyClass<int>();
        }
    }
}

if I created object like this, it is not giving error why? what does it mean exactly?

if I created class like

C#

public class MyClass<t>
{
    //my code goes here
}

means dynamically we can pass any type to members which uses type as "T", apart from this is there any other reason? am getting confusion on this?

Thank u

Posted 30-Sep-13 1:37am

usha sri latha

Updated 30-Sep-13 1:39am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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CPallini · Answer 1 · 2013-09-30T01:59:00

Solution 3

Before 'adventuring' into Generics land, I strongly advice you reading some documentation. You may start, for instance with: An Introduction to C# Generics[^].

Posted 30-Sep-13 1:59am

CPallini

Fredrik Bornander · Answer 2 · 2013-09-30T01:53:00

Solution 1

That should give an error, you're not allowed to do

C#

public class MyClass<string>

The type parameter declaration must be an identifier, not a type.

Check what you're compiling again to make sure you're actually compiling what you think you are.

Hope this helps,
Fredrik

Posted 30-Sep-13 1:53am

Fredrik Bornander

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 3 · 2013-09-30T01:56:00

Refer - [MSDN] Generics (C# Programming Guide)[^]

Quote:
Generics were added to version 2.0 of the C# language and the common language runtime (CLR). Generics introduce to the .NET Framework the concept of type parameters, which make it possible to design classes and methods that defer the specification of one or more types until the class or method is declared and instantiated by client code. For example, by using a generic type parameter T you can write a single class that other client code can use without incurring the cost or risk of runtime casts or boxing operations, as shown here:

Sandesh M Patil · Answer 4 · 2013-09-30T02:18:00

The second class which you declare is a generic class

XML

public class MyClass<t>
{
    //my code goes here
}

This class datatype defined when its object are created.

However if you are creating class of string type and then create an object of int type it will definitely gives you an error.

If I declared class MyClass,am not getting any error when created object like MyClass obj=new MyClass(); Why?

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