.Net Training Updates

CLR [ Common Language Runtime ] is one of the components of the .NET framework which provides an environment to execute the .NET code or the managed code. , CLR helps in converting the MSIL/CIL code into native code and running it.

Properties of CLR :

• Common Language Specification [ CLS]: a set of language rules, common to all the .NET supported programming languages.
• Common Type System [ CTS]: a data type system, familiar to all the .NET supported programming languages, which is further divided into value types and reference types
• Garbage Collector [ GC]: responsible for the "Automatic memory management."
• Just in Time [ JIT ] compiler: converts the MSIL/CIL code into native code

NOTE: we'll learn more about the CLR properties in the sessions.

Garbage collector [ GC ] is responsible for the "automatic memory management - AMM" in .NET framework. Garbage collector [ GC ] is one of the properties of .NET framework components CLR [ common language runtime ].

Why there is a need of "Memory management"?

Ans : Basically, Operating Sytem [ OS ] stores the data that is processed and accessed during programming / development of the applications in the memory. Sometimes that memory gets filled and developers may not be able to store the new data / input that is coming into. 

At this moment, developers need to write a seperate logic for the management of the memory, where they've to identify the unused or unnecessary data that has occupied the OS memory and need to write the logic for releasing that memory which is a burden for the developers.

Hence, to avoid the burden on the developers , this "automatic memory management" is needed.

In .NET, Garbage collector [ GC ] is responsible for the "automatic memory management" and it's popular for it's efficiency.

Working of Garbage collector [ GC ] : 

Garbage collector [ GC ] identifies the active and idled objects from the  heap memory , retains the active objects and destroys the idled objects and releases the memory. 

NOTE: GC provides automatic memory management only for "Reference types"

Generations of GC : 

Garbage collector [ GC ] divides the heap memory into 3 parts or generations and are named as Generation 0 , Generation 1 & Generation 2. Always Gen 0 > Gen 1 > Gen 2

Whenever a new object gets created , it occupies the memory only in Gen 0.

When Gen 0 gets filled completely, Garbage collector [ GC ] performs an action called "Collection" on Gen 0 , identifies the active and idled objects , pushes the active objects into Gen 1 and destroys the idled objects from the Gen 0 and releases the memory. 

When Gen 1 gets filled completely, Garbage collector [ GC ] performs an action called "Collection" on Gen 1 , identifies the active and idled objects , pushes the active objects into Gen 2 and destroys the idled objects from the Gen 1 and releases the memory. 

When Gen 2 gets filled completely, Garbage collector [ GC ] performs an action called "Collection" on Gen 2 , identifies the active and idled objects , retains the active objects and destroys the idled objects from the Gen 2 and releases the memory. 

Thus , Garbage collector [ GC ]  is efficient and responsible for "Automatic memory management" in .NET framework.

In the Present fast-paced world, people are facing challenges concerning keeping themselves always with the up to date technologies or industry changes. When it comes to the IT industry, it is becoming crucial as people with continuous learning are fit for upcoming projects rather than others who don't update.

Due to heavy workloads and other restrictions people are largely opting for remote or online classes where some choose for online training companies and others want for trainers through known friends referrals or online platforms like UrbanPRO. I am trying to put forward my thoughts of Dos and Dont's in remote learning which are my observations in the last seven years of training resources for job eligible.

Do's:

1) Ensure that you set your requirement and background honestly with the trainer so that trainer can plan the right learning method to suit your need. (Especially people planning to switch jobs, people having gaps in employment and Women Planning to enter into the career after the gap)

2) Listen to the trainer carefully about his suggestions for your training and validate if that meets your expectations and then decide. Most of the trainers here are experienced people in Industry with multiple skills and knows which is in demand and which is not.

3) Plan your learning use case based so that you will learn techniques to apply rather than to work. When you can apply, you will understand it better to justify various internal concepts. Whereas if you look forward to work, you will limit to the basic concepts which meet the requirement to finish your work.

4) Even though people can opt for remote online learning, it is good to bring online training to near-real-time direct practice virtually so that trainer and student interact with each other better and can implement watch and teach mode. If it is just screen sharing training, then the effectiveness of training will be only 20 to 30%.

Dont's:

1) Training is to Improve your knowledge and don't assume that after training you will get the job for sure.

2) Avoid thinking that if I learn a specific technology, I can get a job with high salary immediately.

3) Don't stop practising.

4) Don't rely on single technology.

5) Do not hesitate to ask questions even though you feel they are silly. (This I have observed largely in female students and people who have gaps in career, where they hesitate to ask the question because of impression one will have.)

- Basically , a Method is a piece of code used for the re-usability purpose. 

- Method is of 2 types Function and Procedure

- Function is a method which returns a value to the calling place

Procedure is a method which returns nothing to the calling place.

Procedure syntax:

<procedurename>(<params>[optional])

{

    //code

}

Procedure samples:

Display()

{

     Console.WriteLine("Procedure returns no value");

}

Add(int a, int b)

{

     Console.WriteLine("Sum : "+(a+b));

}

Hence, a function always returns a value or void to the calling place and a procedure returns nothing.

C# do not support Procedure. So functions in C# should be defined with the return type.

When I am working with MVC project I had a requirement like to clear all the errors and text entered inside a bootstrap modal. So that when I opened the modal again I could see a plain binding.

        $("#guest_form input[type='text'],input[type='password']").val('');  
        $("#guest_form input[type='text'],input[type='password']").each(function () {  
            $(this).removeClass('form-control input-validation-error');  
            $(this).addClass("form-control");  
        });  
        $(".field-validation-error").text('');  
    }); 

Initially my modal looks as follows

On submitting the modal without entering any data here my modal looks as follows

On closing the modal and opening it again I am still seeing the errors on my modal

What I need is I would like to clear all the validations and the classes which got applied using MVC validations so that it should again show me the original screen as follows

ExecuteNonQuery

ExecuteNonQuery method will return number of rows effected with INSERT, DELETE or UPDATE operations. This ExecuteNonQuery method will be used only for insert, update and delete, Create, and SET statements. 

ExecuteReader

Execute Reader will be used to return the set of rows, on execution of SQL Query or Stored procedure using command object. This one is forward only retrieval of records and it is used to read the table values from first to last. MOSTLY HELPFUL WHEN SEARCHNG FOR EXISTANCE OF PARTICULAR DATABASE RECORDS.since its only for searching and retrieval of records here as well INSERT, DELETE or UPDATE queries for its operations tobe performed is not applicable.

Execute Scalar

Execute Scalar will return single row single column value i.e. single value, on execution of SQL Query or Stored procedure using command object. It’s very fast to retrieve single values from database. as comapred to executeNonquery its not depended on INSERT, DELETE or UPDATE queries for its operations tobe performed.

Hello Kirit,

The application which were devloped about 2 decades back was mostly coded in java and so you will see so many of the application (in several company and outside) written in java. .Net(collectively C#) on the other hand is a new entrant in the ring and there have been several devlopment on that too..

A good programmer needs strong logics, algorithm building and problem solving ability. The languages (java or anything else) gives you the syntax to code what you have thought. Of course each programming langauge has its own pro n cons (depends on what you are looking in the language). As mentioned above there are great frameworks designed in java. Java might give you an edge but a career is what you make out of it.

Cheers!

Thanks,
Arun