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What is new in c# 9. How we can use it in programming  There are new features in the last few versions of C# had made it easy to write shorter and simpler code. C# 9 is no exception to that. Records, new types of syntax, and more other features can make your code much more expressive. In certain cases, you can avoid writing a lot of more code that was previously needed. C# 9.0 introduces record types. You use the record keyword to define a reference type that provides built-in functionality for encapsulating data. provides built-in functionality for encapsulating data:  public record Person(string First_Name, string Last_Name); property definition of Positional syntax  Exp :Person person = new("Nancy", "Davolio");   Immutability : Immutability can be useful when you want a data-centric type to be thread-safe or a hash code to remain the same in a hash table.  Nondestructive mutation and more new features. C# 9 also allow you to use a more specific return...

 Nested Data Table is not function ,  while clicking Jquery: while clicking the detail-control class is not firing its function. the following code am using  Nested DataTable is not functioning , in Jquery while click: $('#tblDataTable tbody').on('click', 'tr td.details-control', function () {                 var tr = $(this).closest('tr');                 var row = dt.row(tr);                 var idx = $.inArray(tr.attr('id'), detailRows);                   if (row.child.isShown()) {                       row.child.hide();      ...

 Ques: Explain me what are the challenges of working in communications? Ques: What strategies would you suggest to increase our market share? Ques: Explain me about a time your communication skills improved a situation? Ques: Explain what do you read, and how do you consume information? Ques: Explain how you would carry out keyword research? Which keyword research tools would you use? Ques: What digital channels would you choose to promote a new product we're launching? Ques: Describe a time you were faced with stress that tested your coping skills. Ques: Why and how would someone share your content or talk about your company? Ques: Do you know what is a communications specialist? Ques: What is the typical salary of a communications specialist? Ques: How important is it for you to have a career in marketing or business? Ques: Where do you see yourself in five years as Education Marketing Specialist? Ques: Explain me what does a communications specialist do? Ques: Have you ever part...

What is an IndexOutOfRangeException  or ArgumentOutOfRangeException and how do I fix it?

What is a NullReferenceException, and how do I fix it? The developer is using null intentionally to indicate there is no meaningful value available. Note that C# has the concept of null able datatypes for variables (like database tables can have nullable fields) - you can assign null to them to indicate there is no value stored in it,

REST APIs with .NET and C# REST APIs with .NET and C# is a ASP.NET makes it easy to build services that reach a broad range of clients, including browsers and mobile devices. With ASP.NET you use the same framework and patterns to build both web pages and services, side-by-side in the same project. What you want to learn REST APIs  Understand the Web Api's Build the backend for your web and mobile apps Build Web Api's with Entity Framework Code First Approach Use Entity Framework to query data Use Model Validations to Validate the data Implement Sorting , Paging & Searching Implement Client and Server Side Caching to reduce server load Implement Authentication & Authorization in Web Api's Deploy Web Api to Microsoft Azure Test Api via Postman