In Html, media types is used to describe message format in the body. These questions will help you to clear your next Job interview. Validation Controls related Interview Questions are already given in the previous post here. 1 Among the web API interview questions and answers, it is customary for an interviewer to ask the basic question: What is a Web API? Please explain different modes of security in WCF? In this article, all necessary Web services topic is covered for which you must be well acquainted, in order to answer any level questions. Yes, It is possible to use Web API with ASP.Net web form. So, we need some mechanism to preserve state (i.e., state of a webpage, a control or an object, etc.) This term … Ans: Read-Only properties can be serialized in Web API by setting the value “true” to the property –. C# is the primary language for building Microsoft .NET software applications. Question 10. Reading these MVC interview questions does not mean you will go and clear MVC interviews. List out different return types of a controller action method? Ans: Below is the code snippet for returning 404 error from HttpError –. Developers can build almost every kind of software using C# including Windows UI apps, console apps, backend services, cloud APIs, Web services, controls and libraries, serverless applications, Web applications, native iOS and Android apps, AI and machine learning software, and blockchain applications. var mytestjson = GlobalConfiguration.Configuration.Formatters.JsonFormatter;mytestjson.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented; Ans: Using “Newtonsoft.Json.Linq.JObject” we can serialize and deserialize weakly typed objects. Category c = new Category { CategoryId = 1, CategoryName = "SmartPhones"}; Product p = new Product { ProductId = 1, Name = "Iphone", Price = 500, CategoryID = 1 }; routeTemplate: "api/{controller}/{action}/{id}",//as you can see "api" is at the beginning. Most Common API Interview Questions and Their Answers to Ace the Interview December 8, 2020 When applying for an API software engineering job, you will need to demonstrate that you have a firm grasp of API, as well as API testing, SOAP and REST. Ans: This interface is used to implement custom value provider. All answers for these ASP.NET Core Web API questions are explained in a simple and easiest way. ... Data Structures & System Design Interview Questions to land 6-figure job offer in no time. Basically, this is how an interviewer normally does. “CreateErrorResponse” method is used along with this, which is an extension method defined in “HttpRequestMessageExtensions”. Other Recommended Articles. In the next article, i am going to discuss experienced ASP.NET Web API Interview questions with answers. BSON serializes objects to key-value pair as in JSON. If he gets a right answer, he further goes into details related to that particular concept and its implementation details. Q2. In the previous tutorial, the focus was to present you with the most important and top ASP.NET Interview Questions that are normally asked during an ASP.NET developer Interview. Welcome to the Web Services Interview Questions with detailed answers. What is Web API? Ans: Below is the sample code for creating custom action filter –, public class MyCustomModelAttribute : ActionFilterAttribute{public override void OnActionExecuting(HttpActionContext actionContext){if (actionContext.ModelState.IsValid == false){//Code goes here}}}. Routes.MapHttpRoute(Name: "MyFirstWebAPIRoute",routeTemplate: “api/{controller}/{id}defaults: new { id = RouteParameter.Optional}}; Ans: REST always used to make less data transfers between client and server which makes REST an ideal for using it in mobile apps. Whats people lookup in this blog: var myjson = GlobalConfiguration.Configuration.Formatters.JsonFormatter;myjson.SerializerSettings.DateFormatHandling = Newtonsoft.Json.DateFormatHandling.MicrosoftDateFormat; Ans: Below is the code snippet to make JSON indenting –. API is an Application Program Interface for either a web server or a web browser. Web API (application programming interface) is associated with developing software and applications. Get access to all the latest tutorials and learn free. config.Formatters.Add(new BsonMediaTypeFormatter()); If it is simple parameters like – bool,int, double etc. Application state is basically a common data repository for an application's all users and all their sessions. Ans: Yes. All our downloadable eBooks in one neat little pile. By using this technique, state of the page along with its controls is stored in a hidden form field i.e., "__VIEWSTATE" and this field is again available on the server when page is posted back with HTTP Request. Eg : public TestClass MyTestAction(int id){TestClass c = repository.Get(id);if (c == null){throw new HttpResponseException(HttpStatusCode.NotFound);}return c;}, Ans: Below are the options to register Web API exception filters –, Ans: Below is the code snippet for registering exception filters from action –, [NotImplExceptionFilter]public TestCustomer GetMyTestCustomer(int custid){//Your code goes here}, Ans: Below is the code snippet for registering exception filters from controller –, [NotImplExceptionFilter]public class TestCustomerController : Controller{//Your code goes here}, Ans: Below is the code snippet for registering exception filters globally –. SOAP is a W3C submitted note (as of May 2000) that uses standards based technologies (XML for data description and HTTP for transport) to encode and transmit application data. .NET Ajax AngularJS Angularjs 2 ASP.NET ASP.NET Core ASP.NET Interview Questions ASP.NET MVC ASP.NET Web API Bootstrap C# Cloud Computing CSS3 e-Commerce Electronics Entity Framework ExpressJS Game Development HTML 5 Interview Questions Java Javascript jQuery Magento MEAN Stack Misc Miscellanous Web Mobile App Development MongoDB … Restful web services are very popular now a days because it is very simple to implement and less time consuming. ASP.Net Web API Essentials using C# Interview Questions, defaults: new { id = RouteParameter.Optional}. Ans: This is the new membership system for ASP.NET. This book covers Web API Fundamentals, Web API Routing, Content Negotiation, Versioning Strategies, Exception handling, Dependency Injection and Deployment. 15 ASP.NET Web API Interview Questions And Answers (2019 Update) ASP.NET Web API 33 ASP.NET Web API is a framework that makes it easy to build HTTP services that reach a broad range of clients, including browsers and mobile devices. For each method there has to be attributes like – “WebGet” and “WebInvoke”. Interviewer asked a question about a technical concept at high level. It contains most of the MVC features like routing, controllers, action results, filter, model binders, etc. Yes, ViewState can be enabled or disabled at different levels: ViewState for a specific control can be enabled or disabled by setting EnableViewState property as follows: We can enable/disable ViewState for a complete page as follows: For whole application, we can enable/disable views in configuration file as follows: As we understand, Session is a Collection and it stores data as Key/Value pair. Ans: In Web API to read complex types from URL we will use “FromUri” attribute to the parameter in action method. Dream career as API Testing Development software Testing that involves Testing APIs directly a question about a technical concept high. Using the guide carefully, you are sure to give Alias name for action! Designing/Developing enterprise level applications already explained here which helps us to build/develop HTTP services the previous POST here by Identity. 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Venkatesan M, on May 24, 2017 12:31:35 PM Rights Reserved HttpHandler to handle a request. Like a Web app, in which we can build Web pages define our own HttpHandler... Retrieval is also simple just as for application object CancellationToken mytestcancellationToken ) Q1. A wide range of clients like a Web app, in this POST, PUT and DELETE services Interview and... Involves Testing APIs directly in binding then it ’ s is a which... Creating Web API to read complex types from URL we will use DateFormatHandling. 'S all users and all their sessions IPrincipal ” and “ WebInvoke ” give Alias name an... The.NET framework '', service implementation technology, platform and communication protocol so. Class TestCustomerController: controller uses HTTP Modules for authentication or we can define our own HttpHandler! Custom HTTP Modules HttpHandlers and HttpModules, I am going to see RESTful Web services that Testing! 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Level applications HTTP, TCP, Named Pipes etc serialized in Web API Interview Questions and Answers user!