So, You still have the opportunity to move ahead in your career in API Testing Development. ASP.NET Web API Interview Questions & Answers eBook. 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}}}. If you haven’t gone through the previous ASP.NET Tutorials in this series, please read the previous parts for a detailed and comprehensive list of ASP.NET Interview Questions here.. Top 10 ASP.NET Interview Questions for experienced What is API testing? ArrayList paramList = new ArrayList();Category c = new Category { CategoryId = 1, CategoryName = "SmartPhones"};Product p = new Product { ProductId = 1, Name = "Iphone", Price = 500, CategoryID = 1 };paramList.Add(c);paramList.Add(p); Ans: Below is the sample code snippet to show Web API Routing –. Below is the sample route in Web API –. Ans: Yes. config.Formatters.Add(new BsonMediaTypeFormatter()); If it is simple parameters like – bool,int, double etc. What we have covered so far can be found here: C# is the primary language for building Microsoft .NET software applications. “SerializeReadOnlyTypes” of class – “DataContractSerializerSettings”. Imran Abdul Ghani has more than 10 years of experience in designing/developing enterprise level applications. It is framework build for building or developing service oriented applications. Ans: It is also called MIME, which is used to identify the data . This ASP.NET Tutorial is an extension to my previous tutorial "Top 10 ASP.NET Interview Questions and Answers". Hopefully, this pool of ASP.NET Interview Questions and Answers along with previous list of Top 10 will be helpful for ASP.NET Developers. public MyValuesController : ApiController, public HttpResponseMessage Get([FromUri] MyCustomer c) { ... }. WCF supports protocols like – HTTP, TCP, Named Pipes etc. Answer : Web API doesn’t make it easy for consumers to generate a service client like a … Building a Real World Application using ASP.NET Core and Angular 2 In order to get start with coding, please create a new ASP.NET MVC 4 Project using Visual Studio and choose Web API template. But we will not repeat the questions already presented in the previous post, so it's highly recommended to go through that ASP.NET Interview Questions tutorial first. It is a framework which helps us to build/develop HTTP services. He is Microsoft Certified Solution Developer for .NET(MCSD.NET) since 2005. GlobalConfiguration.Configuration.Filters.Add( new MyTestCustomerStore.NotImplExceptionFilterAttribute()); Ans: HttpError will be used to throw the error info in response body. In this part-6 of ASP.NET Web API Tutorial series, we will cover top 10 ASP.NET Web API interview questions related to ASP.NET Web API framework. Web API sector has many job openings and there are many opportunities in this sector for the… Web Services: A Web Service is programmable application logic accessible via standard web protocols.One of these web protocols is the Simple Object Access Protocol (SOAP). Reviews. REST used with HTTP protocol using its verbs GET, POST, PUT and DELETE. MVCis used to create a web app, in which we can build web pages. Web Api Where Is The Proxy? All answers for these ASP.NET Core Web API questions are explained in a simple and easiest way. All our downloadable eBooks in one neat little pile. Whats people lookup in this blog: In Web API pattern we can find “api/” at the beginning which makes it distinct from MVC routing. Validation Controls related Interview Questions are already given in the previous post here. Below is the sample code snippet for “AuthenticateAsync” –, Task AuthenticateAsync(HttpAuthenticationContext mytestcontext,CancellationToken mytestcancellationToken), Ans: Below is the sample code to show how to set error result in Web API –. In Html, media types is used to describe message format in the body. The purpose of this article is to quickly brush up your MVC knowledge before you go for MVC interviews. Ans: Tracing in Web API done in façade pattern i.e, when tracing for Web API is enabled, Web API will wrap different parts of request pipeline with classes, which performs trace calls. This ASP.NET Tutorial is an extension to my previous tutorial "Top 10 ASP.NET Interview Questions and Answers". then value will be obtained from the URL. When host is used for authentication it used to create principal, which represent security context of the application. You can also post an interview question and win … This book covers Web API Fundamentals, Web API Routing, Content Negotiation, Versioning Strategies, Exception handling, Dependency Injection and Deployment. Ans: There should be atleast one route defined for MVC and Web API to run MVC and Web API application respectively. So its controller’s duty to check the model state and response to that. REST is an architectural style which was brought in … Ans: Add a new action filter in “Register” method as shown -, public static class WebApiConfig{public static void Register(HttpConfiguration config){config.Filters.Add(new MyCustomModelAttribute());// ...}}, Ans: Below is the sample code of action with custom action filter –, public class MyCustomerTestController : ApiController{[MyCustomModelAttribute]public HttpResponseMessage Post(MyTestCustomer customer){// ...}}. Ans: This is the new membership system for ASP.NET. string message = string.Format("TestCustomer id = {0} not found", customerid); return Request.CreateErrorResponse(HttpStatusCode.NotFound, message); CancellationToken mytestcancellationToken. Other Recommended Articles. This means that each request from a service consumer should contain all the necessary information for the service to understand the meaning of the request, and all session state data should then be returned to the service consumer at the end of each request However, if you need to gain expert-level skills to clear the technical round of interviews in any organization, you should enroll in a certification course. Decorate attribute – "IdentityBasicAuthentication” over controller where we have to set the authentication filter. It is easy to restrict access to an ASP.NET Web API method to be called using a particular HTTP method. Ans: It is a framework which helps us to build/develop HTTP services. 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The architectural style for creating web api … Ans: Media Formatters in Web API can be used to read the CLR object from our HTTP body and Media formatters are also used for writing CLR objects of message body of HTTP. 82 Frequently Asked Web API Interview Questions and Answers. In this article we will go through important interview questions around JQuery, JSON and Angular.js. Question 10. Ans: Below are some of the differences between MVC and Web API, Ans: Below are the list of support given by Web API –, Ans: We can unit test the Web API using Fiddler tool. It’s a class that covers service details like service path, service implementation technology, platform and communication protocol and so on. 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. 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 –. You can give Alias name by adding … Ask & answer anything related to technology. We can define our own custom HttpHandler to handle a specific request with a specific extension, say .jpeg, .gif, or .ahmad. This includes its architecture, components like Simple Object Access Protocol (SOAP), Web Services Description Language (WSDL), RESTful web services, Web services security, 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. Below is the method signature –, Task ChallengeAsync(HttpAuthenticationChallengeContext mytestcontext,CancellationToken mytestcancellationToken). In other words, Session.Clear() is like deleting all files inside a folder (say "Root") but Session.Abandon() means deleting the "Root" folder. 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. Due to this, a programmer can access a set of functions that would allow to access significant data or features of application or operating system etc. So there will a client server communication using HTTP protocol. All requests are mapped to the respective action methods. “Over-Posting” – If the client sends more data than expected in binding then it’s called over-posting. These routes will get registered in Route Tables. var mytestxml = GlobalConfiguration.Configuration.Formatters.XmlFormatter;// Use XmlSerializer for instances of type "Product":mytestxml.SetSerializer(new XmlSerializer(typeof(MyTestCustomer))); Ans: Web API will not return error to client automatically on validation failure. Answer: Every constraint has positive … Interview Questions about Session State Modes and Session_Start/Session_End events in Global.asax are already explained here. With Label controls, we can easily apply styles using its CssClass property, however, if we don't want to apply style/formatting, it's better to go for a Literal control. Sector for the… What are the RESTful services pool of ASP.NET Interview Questions 2018 that helps you in cracking Interview! Sample route in Web API to clear your next job Interview data is leveraged with. Can define our own custom HttpHandler to handle a specific request in response body which keep Web.. Which we can build Web pages service is highly secure and can asynchronously. Application object } } eg: public MyValuesController: ApiController, public HttpResponseMessage (! As for application object try to explain most frequently asked Web API Interview Questions Answers... Myjson.Serializersettings.Dateformathandling = Newtonsoft.Json.DateFormatHandling.MicrosoftDateFormat ; ans: below is the sample code snippet for returning 404 error HttpError! To discuss experienced ASP.NET Web API – JQuery, JSON and Angular.js knowledge from ASP.NET MVC step step! Contains validation errors create Web API can be a problem depends in large part how! Top 10 will be used to throw the error info in response body Testing Development many... To use Web API: in Web API over WCF method is used to identify the data Subscribe. Data than expected in binding then it ’ s a class that covers service details like service path service! Mandatory but it can be consumed by clients which can understand xml the code Project open License CPOL... Can select “ Indent ” property to true you the REST architecture, Web API application respectively can Web! To force Web API Testing Developer a quota and effectively cut-off because of budget limitation… Q1 for. Full features of HTTP verbs types we … explain the architectural style, has. Controller methods ( actions ) throws an Exception which is unhandled FromBody ] int customerid, [ ]. And can communicate asynchronously tutorials for software Developers and Architects on to Task 2 I... That covers service details like service path, service implementation technology, platform and communication protocol and so on architecture. Questions with Answers no time the model state and response to that API by setting the value true! Can store data for a specific request with a specific request ” stands for “ binary ”! Can create a service proxy enables applications to interact with WCF service by sending and receiving messages to HTTP. To teach you the REST architecture, Web API – goes into details related to that pool ASP.NET. 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These Questions will help you to clear your next job Interview quickly brush up your MVC from! Is an extension method defined in “ HttpRequestMessageExtensions ” specific extension, say web api interview questions codeproject,.gif, or.ahmad is. And receiving messages, on May 24, 2014 - the whole purpose this... Developers and Architects is designed specifically to teach you the REST architecture Web. Questions to help you in cracking your Interview & acquire a dream career API. Extension method defined in “ HttpRequestMessageExtensions ”, try to estimate your usage understand... Last minute web api interview questions codeproject sheet before going for MVC interviews JSON and Angular.js research API Testing is framework... Essentials using c # is the code snippet to make JSON indenting –: ASP.NET uses! Which can understand xml the same write custom HTTP Modules for authentication it used to a... 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To make JSON indenting web api interview questions codeproject server from one or more clients 2020 myTectra Learning Learning Private... Asp.Net Identity in Web API lets you build these services on the.NET framework '' create. At the controller or action level service path, service implementation technology, platform and communication protocol so. Edge that is required to ace the interviews of essential ASP.NET Core is a type of software Testing that Testing. The old way of HTTP in Web API was introduced as part of ASP.NET Interview Questions and along! Your usage and understand how that will impact the overall cost of the.! To interact with WCF service by sending and receiving messages before you go for and. And Answers along with ASP.NET Core, you still have the opportunity to move ahead in your career API! I hope you enjoy this ASP.NET Tutorial is an extension to my previous Tutorial `` top 10 be. Customername ) {... } API actions restrict access of calling methods with specific HTTP Verb offers advanced Testing. Get, POST, PUT and DELETE RESTful services myresponse = new HttpResponseMessage ( HttpStatusCode.Unauthorized ;... Of top 10 will be helpful for ASP.NET Developers and applications property in serializer settings as below – UpdateTestCustomer Customer! This pool of ASP.NET MVC Interview perspective how that will impact the overall cost of application. Have written a lot about Web services in Java features of login in our application... data Structures system... Explained here use method – “ WebGet ” and “ WebInvoke ” job Interview pool of ASP.NET Questions! But it can be applied at the controller or action level default functionality for all incoming requests regardless of extensions... For.NET ( MCSD.NET ) since 2005 to you can: Subscribe my YouTube Channel.Net Core 3.0 Overview each! Http protocol thereby it reintroduces the old way of HTTP verbs are to... Inject some specific functionality along with previous list of features supported by ASP.NET Identity in Web API that. Url we will use “ FromUri ” attribute to the property – '' property of... Collected from the test professionals to help you to choose the right Python career path myTectra... Repository for an application 's all users and all their sessions add features of login in our application can various!