interview questions of product based comapny

Please answer below questions

1- i want to create web api and share end point to other team , i want to share 2 -3 action methods of controller only . Controller has 8-9 methods also which our team can call.

what should be approach for web api writing and how to share end point to other team.

2 - i want to create web api and share it to external company so they can consume it .

what setting and approach i follow.

3- what is reflection in C#

4- what is difference in conventional tpye and generics type.

5- Generics does not do boxing and unboxing , how do generics do data conversion and where it store data.

6- Real example of extension method in C#

7- flow of action filter in mvc with real example

8 - we have created custom error method , i want if error comes at any places in project , this method calls, what is setting require in MVC

9 - how can we crete single page application with Angular 2 and web api.

Hi Pramod,

1) Use [NonAction] attribute to the action methods which are not allowed to share.

Provide [authorize] attribute to them with specific user access.

2) We can create a web api and provide the "End Points" to the company who ever needs the Info.

3)Relection:

used to collect the metadata information, Like members or types of the members of a class.

https://www.c-sharpcorner.com/uploadfile/keesari_anjaiah/reflection-in-net/

4) I'm not sure about the term "Conventional". But I hope its with the meaning of "collection" and "generic collection"

Collections are not type safe, Whereas the generic collections are type safe.

How ?

ArrayList obj = new ArrayList();

obj.Add("I can pass any datatype");

obj.Add(20);

obj.Add(true);

List lstint = new List();

lstint.Add(1);

lstint.Add(2); // I am not allowed to pass other than integer.

Regardin null case :

Collections : can shows null result if index or key not found while search.

Generic Collections : shows exceptions if index or key not found while searching.

5)Boxing or Unboxing is not allowed in generics.

List

here "T" can be any objects like employees or departments or any else.

So, we cant give as like :

empobj = deptobj //Its wrong.

empobj1 = empobj2 // It's valid

So, as we are mentioning type we can go with any other type while assignment.

Boxing can be done from value type to refernce type.

unboxing would be done only if required from reference to value type.

Internally, every generic will be using the concept of "arrays".

As arrays are reference types, we can say that generics also stores inside heap.

6)hahaaaaaaaa...

No real or bad....

Extension methods are used to assign our own method to a class which is using frequently in our project. For calling themethod by the class memebr.

7) Order of filters in MVC as follows :

Authorization filter

Action filter

Result filter

Exception filte

For more about filters follow the below URL :

https://www.c-sharpcorner.com/UploadFile/97fc7a/execution-order-of-filters-in-mvc-4-with-practices-importan/

8)To do so, Register your action filter in Global.asax page as like below :

protected void Application_Start()

{

// Calling Global action filter

GlobalFilters.Filters.Add(new MyExceptionHandler());

}

In above "MyExceptionHandler" is your custom error method ofcourse its nothing but the custom filter.

9)Firstly, angular 2 itself supports only single page application it can with or withour web API.

If it helps, Mark as answer.

Thank you.

2 Replies

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

Sreekanth Reddy7y ago
Accepted answer
Hi Pramod,

1) Use [NonAction] attribute to the action methods which are not allowed to share.
or
Provide [authorize] attribute to them with specific user access.

2) We can create a web api and provide the "End Points" to the company who ever needs the Info.
3)Relection:
used to collect the metadata information, Like members or types of the members of a class.
https://www.c-sharpcorner.com/uploadfile/keesari_anjaiah/reflection-in-net/
4) I'm not sure about the term "Conventional". But I hope its with the meaning of "collection" and "generic collection"
Collections are not type safe, Whereas the generic collections are type safe.
How ?
ArrayList obj = new ArrayList();
obj.Add("I can pass any datatype");
obj.Add(20);
obj.Add(true);
List lstint = new List();
lstint.Add(1);
lstint.Add(2); // I am not allowed to pass other than integer.
Regardin null case :
Collections : can shows null result if index or key not found while search.
Generic Collections : shows exceptions if index or key not found while searching.
5)Boxing or Unboxing is not allowed in generics.
List
here "T" can be any objects like employees or departments or any else.
So, we cant give as like :
empobj = deptobj //Its wrong.
empobj1 = empobj2 // It's valid
So, as we are mentioning type we can go with any other type while assignment.
Boxing can be done from value type to refernce type.
unboxing would be done only if required from reference to value type.
Internally, every generic will be using the concept of "arrays".
As arrays are reference types, we can say that generics also stores inside heap.
6)hahaaaaaaaa...
No real or bad....
Extension methods are used to assign our own method to a class which is using frequently in our project. For calling themethod by the class memebr.
7) Order of filters in MVC as follows :
Authorization filter
Action filter
Result filter
Exception filte
For more about filters follow the below URL :
https://www.c-sharpcorner.com/UploadFile/97fc7a/execution-order-of-filters-in-mvc-4-with-practices-importan/
8)To do so, Register your action filter in Global.asax page as like below :

protected void Application_Start()
{
// Calling Global action filter
GlobalFilters.Filters.Add(new MyExceptionHandler());
}

In above "MyExceptionHandler" is your custom error method ofcourse its nothing but the custom filter.
9)Firstly, angular 2 itself supports only single page application it can with or withour web API.
If it helps, Mark as answer.
Thank you.

+1
Suraj Kumar7y ago
I think you are correct to question but it will be better to post it in the interview question section.

Also post the question one by one not for all into one as someone can answer in detail for either question.
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