What is MakeGenericType?
The MakeGenericType method allows you to write code that assigns specific types to the type parameters of a generic type definition, thus creating a Type object that represents a particular constructed type. You can use this Type object to create run-time instances of the constructed type.
How do I instantiate a generic type in C#?
To construct an instance of a generic type
- Get a Type object that represents the generic type.
- Construct an array of type arguments to substitute for the type parameters.
- Call the MakeGenericType method to bind the type arguments to the type parameters and construct the type.
How do you create a generic list?
Java has provided generic support in List interface.
- Syntax. List list = new ArrayList();
- Description. The T is a type parameter passed to the generic interface List and its implemenation class ArrayList.
- Example. Create the following java program using any editor of your choice.
Is a variable but used like type?
EntityType’ is a variable but is used like a type when use the Reflection.
How do you create an instance of a generic class?
But we will get the type of generic type by using typeof operator….Create Object to Generic or Unknown Class
- public class Employee.
- public string Name.
- public string Address.
Does a generic class need a constructor?
A generic constructor is a constructor that has at least one parameter of a generic type. We’ll see that generic constructors don’t have to be in a generic class, and not all constructors in a generic class have to be generic.
What are lists in C#?
Lists in C# are very similar to lists in Java. A list is an object which holds variables in a specific order. The type of variable that the list can store is defined using the generic syntax. Here is an example of defining a list called numbers which holds integers.
Why do we need non generics in C#?
Non-generic collections hold elements of different datatypes. The following are the non-generic collections: ArrayList, BitArray. ArrayList − It represents ordered collection of an object that can be indexed individually.
What is difference between generics and non generics in C#?
A Generic collection is a class that provides type safety without having to derive from a base collection type and implement type-specific members. A Non-generic collection is a specialized class for data storage and retrieval that provides support for stacks, queues, lists and hashtables.
Why is reflection bad programming?
It’s very bad because it ties your UI to your method names, which should be completely unrelated. Making an seemingly innocent change later on can have unexpected disastrous consequences. Using reflection is not a bad practice. Doing this sort of thing is a bad practice.
Can interface be made as generic?
Generic interfaces can inherit from non-generic interfaces if the generic interface is covariant, which means it only uses its type parameter as a return value.