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Great Reads

Deep Dive into OWIN Katana

by kusnaditjung

Web specification and framework

Building an Angular 13 Application with .NET 6 (Global Market) - Part 1

by Fred Song (Melbourne)

Build a simple finance application with Angular 13 and .NET 6

ASP.NET Web Api: Unwrapping HTTP Error Results and Model State Dictionaries Client-Side

by John Atten

When working with ASP.NET Web Api from a .NET client, one of the more confounding things can be handling the case where errors are returned from the Api. Specifically, unwrapping the various types of errors which may be returned from a specific API action method, and translating the error content in

ASP.NET Core and Web API: A Custom Wrapper for Managing Exceptions and Consistent Responses

by Vincent Maverick Durano

This article will talk about how to implement a custom wrapper for your ASP.NET Core and Web API applications for managing exceptions, providing meaningful and consistent responses to consumers.

Latest Articles

Intended Solutions for Intentional Limitations of Strongly Typed OpenAPI Client Generators

by Zijian

Use the codes generated by OpenApiClientGen in real world applications

Generate Typed Forms of Angular Reactive Forms from Swagger / OpenAPI definitions

by Zijian

Construct Angular Reactive Forms of client data models through generated Angular TypeScript codes

Generate Typed FormGroup of Angular Reactive Forms with ASP.NET Core Web API

by Zijian

Construct Angular Reactive Forms of client data models through generated codes

Tour of Heroes: MAUI, with ASP.NET Core 8 Backend

by Zijian

A series of articles comparing programmer experiences of Angular, Aurelia, React, Vue, Xamarin and MAUI

All Articles

WebAPI

$http.post can not send object to controller WebAPi

8 Aug 2015 by baotdinh

Hi all,i am learning Angularjs . i have a code:controller.js $scope.save = function (position) { $http.post(serviceBase + 'Positions', { model: $scope.position }) .success(function (data) { });$scope.position already returns an...

.net core 3.1HTTP GET returns status code 405 method not allowed

11 Jul 2021 by Tshumore

I have a .Net 3.1 API that runs in a Docker container. I am able to do POST requests (using Postman) successfully to one of the methods but when I attempt a GET to the method below I get Status Code: 405; Method Not Allowed This is the method...

.net core docker webapi remotecertificatechainerror

24 Feb 2021 by TheBigBearNow

Hello all, I have 2 .net core projects that work perfectly with each other when I run them normal, I have an API and a MVC UI. When I run them in docker containers, I go on my API with swagger, I figured out how to connect my postgres db and...

.NET Core Microservices in the Enterprise: Logger as Microservice

21 Aug 2021 by freedeveloper

Use the logger system as other Microservices in your eco-system

.NET Core On Mac - Building An ASP.NET Core App With Web API, EF, PostgreSQL And Running It On Docker

14 Nov 2016 by Vincent Maverick Durano

A quick demo tutorial on how to setup .NET Core on Mac and creating a simple ASP.NET Core app that talks to PostgreSQL database, and running it on Docker.

.NET Core RESTful or WebAPI MVC Web Application

7 Aug 2017 by Bart-Jan Brouwer

Modern design example for .NET Core MVC with RESTful service

.NET Core Web API : The Least You Need To Know (Part 2 of 2)

20 May 2020 by raddevus

Post to your Web API via the XmlHttpRequest - learn how to set up headers, data for body, etc.

.NET Core Web API: The Least You Need To Know (Part 1 of 2)

20 May 2020 by raddevus

A quick article to walk you through building your .NET Web API and posting to it via AJAX (using JSON)

.net webapi rename uploaded files

10 Apr 2014 by Florian Trück

Hi, I found a code sample for uploading multiple files to a webapi controller.Now I am not sure how to rename to files created on the server, as the files are named like this:BodyPart_003fa560-908b-4d94-bed0-ac0532a09a66This is how the code sample looks:string root =...

404 Not found error, If I deploy Mvc4 application on IIS7 for ApiController's Action api/Upload

24 Sep 2013 by ashok yede201

Hello,I am using third party Fileupload control to upload file by ajax call in mvc4.It works fine on local, but when I uploads website on IIS 7, it gives error 404 Not found.It searches for http:IpAddress:PortNumber/api/upload which is missing Virtual directory name from ajax call.My...

404 page not found while handling GET/POST request

17 Nov 2016 by Rajivlcr

I'm working on a tracker application with front end Angular JS and using ASP.net Web api for Get/POST requests handling. Getting 404 page not found error while handling requestsWhat I have tried:Faced lot of issues related to CORS and after lot of googling... solved that issue and my app...

404 page not found while handling GET/POST request

17 Nov 2016 by swapnil patil

I think this is server side issue if you are using .net as a back end then you need to add the cors library for that or you can install it using console window of visual studio.

405 error method not allowed for POST in angular project

12 Mar 2020 by Eliza Maria

I have an angular project where I implemented a login function in the login.service.ts.My problem is that no matter what I do I can't get rid of the 405 error Method not Allowed for POST.When I check Postman for the API it gives me the same error...

405 error method not allowed for POST in angular project

12 Mar 2020 by Viswanatha Swamy

Good morning, Based on the code 405 method not allowed, it looks like you have to enable the verb POST in the configuration of the ASP.Net Web API. Could you please refer the below link for additional details. Also please resue that you have the...

500 error on changing application pool from default to custom

2 Apr 2016 by Nikita!8

I have deployed web api on iis 8 which work perfectly fine when app pool is deafault.When i change app pool from default to custom app pool POST services stop working it gives 500 error ,whereas Get services are working fine. Same web api works perfectly fine with custom app pool on different...

500 error on production server - Web API

12 Nov 2014 by HemantShrivastava

Hi ,we had an web api 2 service deployed on production server, every thing was working fine and one day we have started getting 500 error from one of the seviceWe looked into the error codes its showing un handel null exception from one method by some lamda expression Steps that we...

500 error on production server - Web API

12 Nov 2014 by Deepu S Nair

Do you have a StackTrace or any other details regarding this error?A 500 error is fairly generic server-side error that could indicate a variety of things (compilation issues, exceptions etc). You might consider disabling custom errors within your web.config temporarily so that you can...

[REPOST!] how do I do validation for date time where date format is yyyy-mm-dd

19 Aug 2015 by Daksh7

How Do I Do Validation For Date [Required(ErrorMessage = "Select Date Of Birth")][RegularExpression(@"^([1|2]{1}[0|9]{1}[0-9]{1}[0-9]{1})[\-](0?[1-9]|1[012])[\-](0?[1-9]|[12][0-9]|3[01])+$ ", ErrorMessage = "Enter YYYY-MM-DD format only")]public Nullable DOB { get;...

[REPOST!] how do I do validation for date time where date format is yyyy-mm-dd

19 Aug 2015 by Mayank Vashishtha

Phil.o is absolutely right. You must not go for regex(it's vulnerable). Why don't you go for any custom attribute based validation. Hope this link helpshttps://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.customvalidationattribute%28v=vs.95%29.aspx

[REPOST!] how do I do validation for date time where date format is yyyy-mm-dd

19 Aug 2015 by George Swan

I would use the DateTime class to do the validation string requiredFormat = "yyyy-MM-dd"; string dateString = "1999-04-08"; DateTime dateTime; Console.WriteLine( DateTime.TryParseExact(dateString, requiredFormat, null,...

A Beginner's Tutorial for Understanding and Implementing ASP.NET Web API

26 Sep 2013 by Rahul Rajat Singh

In this article we will talk about the basics of ASP.NET Web API.

A Beginner's Tutorial on ASP.NET WebApi Hosting(IIS Hosting and Self Hosting)

26 Dec 2013 by Rahul Rajat Singh

In this article we will look at the various ways of hosting ASP.NET WebApi.

A null value was returned where an instance of httpresponsemessage was expected.

6 Aug 2018 by prapti.n3

I am executing the following code to get data from Web API: $(window).load(function () { var jsonObject = { "CompanyID": 1, "UserName": '30', "UserPwd": '30', "UserRole": 3, "RemoteHostIP": '8.8.8.8' ...

A null value was returned where an instance of httpresponsemessage was expected.

6 Aug 2018 by Richard Deeming

Your API code is throwing an exception. When that happens, your action returns null rather than an appropriate response message. Change your catch block to return a suitable response message: catch (Exception ex) { CTException.WriteDBLog(strCodeFile, "Login_User", ex.Message,...

A web API hello world program

25 May 2015 by Dave Kreskowiak

So, what's the question? All you did was copy your assignment into a post. You never bothered to say what part of this you're having a problem with.If you wanted someone to do your homework for you, you've come to the wrong site.

A web API hello world program

25 May 2015 by Maciej Los

Here is a set articles (links):Say Hello to ASP.NET Web API[^]ASP.NET Web API[^]A Beginner's Tutorial for Understanding and Implementing ASP.NET Web API[^]Read it and try to do something by yourself!

Access localhost web api from web application hosted on internet

21 Aug 2019 by Member 14359787

Hello my web application is hosted over internet. My web application is in angular 7. For some purpose i developed a web API in Node JS which is hosted on all the client machines who will use the web application. Both the web application and web API are configured on https. If i run my web...

web_application

Access Web API in jquery

16 Jun 2014 by Manish Kumar Namdev

Hi Friends,I am new to web api. I have created a sample project of WEB API and MVC 4 APP together. Now when I try to make a request as follows I get the error:#jQuery code.function GetAllEmployees() { jQuery.support.cors = true; console.log("Entered to GetAllEmployees"); ...

Access Web API in jquery

16 Jun 2014 by Kornfeld Eliyahu Peter

The problem is about same-origin policy[^]. It means that you can not make such call from one domain (localhost:51789) to other domain (localhost:51848).You may set crossDomain to true on $.ajax, but the only certain solution is set Access-Control-Allow-Origin header on your target domain.It...

Access Web API in jquery

16 Jun 2014 by Akhil Mittal

Add the below code in your web.config of your API under tag

Access Web API in jquery

16 Jun 2014 by wladimirbm

if you want use only jQuery, you can create file.php with curl for you other pathin localhost:51789function GetAllEmployees() { jQuery.support.cors = true; console.log("Entered to GetAllEmployees"); $.ajax({ url: 'http://localhost:51789/EmployeeAPI.php', ...

Add a web API reference to a .NET core project

9 Nov 2016 by Rasmus Lindegaard

I want to make a small web app, in which i need to call on an external WEB API. It exists with Ruby, Python and Javascript bindings, and then theres a JSON version.I was wondering if anyone has tried referencing a Javascript or JSON WEB API this way? I am simply not sure how to create a...

Add a web API reference to a .NET core project

9 Nov 2016 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Here it is - ASP.Net Core Web API with Visual Studio Code ~ Siderite's Blog[^].

Adding multiple queues in hosted service

18 May 2020 by Member 12885549

I am implementing queues using https://docs.microsoft.com/en-us/aspnet/core/fundamentals/host/hosted-services?view=aspnetcore-3.1&tabs=visual-studio example. this is how my code looks: in startup.cs I am adding my hosted service and background...

BackgroundWorker

Adding react app in the web api solution is a good practice?

10 Jun 2022 by Jeneesh K. Velayudhan

Hi, I am setting up a project from the scratch. My question is, I'd like to add the react app as a part of the API solution. So that, a full stack developer can work on UI/API at the same time in the single VS instance. The same time, UI...

project-management

Additional text encountered after finished reading JSON content: ; . Path '', line 1, position 46."" please help...

30 May 2018 by Member 13175079

I was developing a web application which retrieves json data as output and now i want it to be shown in a datatable.When i use newtosoft json its saying ""An exception of type 'Newtonsoft.Json.JsonReaderException' occurred in Newtonsoft.Json.dll but was not handled in user code. I was new in...

Additional text encountered after finished reading JSON content: ; . Path '', line 1, position 46."" please help...

30 May 2018 by Jinto Jacob

your code do not have enough data to give a proper solution. but in my opinion your problem is with the DeserializeObject line DataTable myObjectDT = JsonConvert.DeserializeObject(myDynamicJSON); the data you deserializing may not be same as datatable. check if the object type...

Additional text encountered after finished reading JSON content: ; . Path '', line 1, position 46."" please help...

30 May 2018 by Patrice T

Quote: Additional text encountered after finished reading JSON content: ; . Path '', line 1, position 46." If you read carefully the error message; it tells you that your json file is not a json file after the position indicated. Only thing to do with your code is to protect it against such...

After hosting the web api applcation in godaddy. After browing in the URL I am facing the error

29 Jun 2018 by 9000605667

after hosting the web apI applcation in godaddy. After browing in the URL i am facing the error What I have tried: Server Error in '/' Application. Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this...

After hosting the web api applcation in godaddy. After browing in the URL I am facing the error

29 Jun 2018 by L.Patrick Boyce

Ajax fail to redirect to web api

4 Dec 2016 by KyLim0211

$(function () { $('#btnUsingjQuery').click(function () { $.ajax({ url: "http://api.google.com/payment/widget?apikey=xxx&country=RS", dataType: 'json', success: function...

Ajax fail to redirect to web api

4 Dec 2016 by Afzaal Ahmad Zeeshan

A few things to note here, first of all use the following type for script, But this is not necessary at all now, browsers are smart enough. You can always omit this and it will work. Secondly, jQuery code needs to come inside a handler otherwise $ won't...

All webservices are API but not all API's a webservice? Is this true?

4 Oct 2013 by Coldcreek

I was looking for Difference between web API and Web services and WCF.Thanks

All webservices are API but not all API's a webservice? Is this true?

4 Oct 2013 by Sampath Lokuge

Web Service1.It is based on SOAP and return data in XML form.2.It support only HTTP protocol.3.It is not open source but can be consumed by any client that understands xml.4.It can be hosted only on IIS.WCF1.It is also based on SOAP and return data in XML form.2.It is...

An ASP.NET Application using Typescript, AngularJS, RequireJS, AngularJS-BootStrap UI, WebAPI, Entity Framework.

23 Mar 2016 by Prince Cheruvathur

This article provides simple steps for creating a template for ASP.Net application using AngularJS, RequireJS and Typescript using AMD module system.

An asynchronous module or handler completed while an asynchronous operation was still pending

15 Jan 2015 by karthik_r

Hi experts...!Can you please anyone tell me how to slow this issue?An asynchronous module or handler completed while an asynchronous operation was still pending while using await and async.

An asynchronous module or handler completed while an asynchronous operation was still pending

15 Jan 2015 by Suraj Sahoo | Coding Passion

SO Discussion[^]You will find a very nice answer here on the above link. Please follow I hope this will help you.Thanks

android call to webapi response 401

8 Apr 2014 by Florian Trück

I have a webapi project where my android client retreives data. The webapi is secured by BearerToken authentication. The client is aware of that and successfully gets a bearer token.Now my problem is, that on every second request to the same url with the same parameters I get a 401...

android call to webapi response 401

10 Apr 2014 by Florian Trück

I found out that DefaultHttpClient not always works as expected. It seems that this one will get deprecated sooner or later.I now use HttpURLConnection for accessing data over HTTP. This works better and also has more options to configure.

Angular 2 & .NET Core Developing Web App From Scratch Part 1: Implementing Restful Web Server

2 Feb 2017 by O.Nasri

Great article to learn how you can create web application from scratch using Angular2 & .NET Core Web API

SQL-Server-2014

Angular 6 Application with Cosmos DB and Web API 2

12 Aug 2018 by Sarathlal Saseendran

We will create an Angular 6 application with Cosmos DB and Web API 2.0.

Angular2 + web API + token based authentication

10 Apr 2016 by Shaahinm

I am trying to learn Angular2and I am trying to create a simple blog with authentication.this here is my add a new post method:[Authorize]// POST: api/Postpublic PostModel Post([FromBody]PostViewModel model){ var post = new PostModel { Body =...

Angular2 api controller call from ts service file

15 May 2017 by Member 13158288

Hi, i have two solutions 1. ASP.NET web application(.Net framework)(Web Api) 2. ASP.NET Core application(.Net Core) in Visula Studio 17. import { Injectable } from '@angular/core'; import { Http, Response, Headers, RequestOptions, RequestMethod } from '@angular/http'; import...

AngularJS // BootStrap / typescript / TypeLite / Font awesone / ASP.NET Web API 2

19 Feb 2016 by mbruchet

How to make a multipleplateforme compatible mobile user interface with AngularJS // BootStrap / typescript / TypeLite / Font awesone.

Angularjs Application concerns

27 Mar 2014 by Vikram Goswami

Hello All,I am working on to create a angularjs application which is mainly handled real time transaction from diffrent vendors.Actually our Payment transaction application is already made in asp.net and running and now for keeping fast performance in the mind we are converting this...

Angularjs service parameters entity model and variables

1 Oct 2015 by musti_276

Hi,The question I asked in the google forumhttps://groups.google.com/d/msg/angular/x-9erGOfVak/60FSrTxvAAAJ

API Created in Flask

1 Feb 2019 by WasiUllah Khan

Created an API for my DropBox file uploader using Flask

API endpoint : resize the image and return it back

24 Jan 2019 by vaibhav1800

Hi All, I am looking ahead to develop a WEBAPI EndPoint which accepts an Image, Resize it and return it back. Please find the minute details below. API Request Parameters a)A Design ID of the Image, b)Image Type c)@ItemType parameter (Need to actually use it in a function called...

ApiBoilerPlate: A Project Template for Building ASP.NET Core APIs in .NET Core 3.x

1 Oct 2019 by Vincent Maverick Durano

A simple yet organized project template for building ASP.NET Core APIs in .NET Core 3.x

ApiBoilerPlate: New Features and Improvements for Building ASP.NET Core 3 APIs

1 Dec 2019 by Vincent Maverick Durano

The new version of ApiBoilerPlate has recently been released. In this post, we will take a look at the new features added to the template.

ApiController Views and WinForms

14 Jan 2014 by Lopezd

I have created a WebApi that returns data has json and my controller uses ApiController, which is indicated to return data, has it says in this stackoverflow answer.My situation is that i have to return a View that obtains the data provided by that controller. - Can i in the same...

ApiController Views and WinForms

14 Jan 2014 by Bala Selvanayagam

Web API returns JSON data by default and your presentation layer could be web / winforms (not very much recommended)- Can i in the same controller return the data and the view or do i have to create another controller? The same controller can be used for both web & winforms(winforms is...

Application_BeginRequest not being fired during PUT API Calls on IIS Server

5 Sep 2014 by Terrence Sheflin

BackgroundI have an MVC Application with a WebAPI component. I'm using jQuery and AJAX to pass and receive data from the WebAPI. I rely on the Application_BeginRequest being fired during each call to perform some mundane task.ProblemApplication_BeginRequest always fires for GET and...

Application_error in global.asax not catching errors in webapi

28 Jun 2016 by ravithejag

In my Project,we are handling WEB API exceptions in Global.asax file (redirecting to Error page if any error occurs).Its working fine when i run in local.Its not working if i deploy the code in the server.protected void Application_Error(object sender, EventArgs e) { ...

Apply filter with variable as dynamic data (still working on)

18 Feb 2021 by LeMagnifik

I'm on a project in which I get stuck just on the final step. let me explain: my project to filter data and move the filtered data to another spreadsheet (by the way if you see this Marios thanks a lot for your help). all work properly without...

Asp.net 4.0 C# : Twitter Search Api Getting error 401 unauthorized

1 Jul 2015 by fenilsuthar

I want to get tweets list from #tag using any API in Asp.net 4.0 C#. I have tried using bellow code. I am getting 401 unauthorized error in GetResponse().My Code :string url = "https://api.twitter.com/1.1/search/tweets.json?q=#Haylof";string oauthconsumerkey = "consumer key";string...

Asp.net 4.0 C# : Twitter Search Api Getting error 401 unauthorized

7 Jul 2015 by fenilsuthar

Please see bellow links to search tweets using #Tag in .net 4.0 C#.1. To Authenticate & Get Access Token2. Search First 15 Tweets Using #Tag

ASP.NET 5 Logging using Trace Listeners and How-to Filter Log Entries

21 Jan 2016 by Girish J Jain

This post shows how to use tracing framework with new ASP.NET 5 projects and how logging works in ASP.NET 5 along with certain pitfall that you need to be aware of in the process of using trace listeners. It also shows approach for how to filter log messages with trace listeners.

ASP.NET 5: Jump Start to AngularJS with MVC 6 Web API

8 Jun 2016 by Vincent Maverick Durano

ASP.NET 5: Jump Start to AngularJS with MVC 6 Web API

ASP.NET Core 2.1: Integrating VMD.RESTApiResponseWrapper.Core to Your REST API Application

16 Nov 2018 by Vincent Maverick Durano

A quick tutorial on how to integrate VMD.RESTApiResponseWrapper.Core library into your ASP.NET Core 2.1 REST API application

ASP.NET Core and Blazor on Mac: Dockerizing Applications

6 Oct 2018 by Vincent Maverick Durano

A step-by-step demo on how to build and dockerize ASP.NET Core and Blazor apps on MacOS

ASP.NET Core and Web API: A Custom Wrapper for Managing Exceptions and Consistent Responses

4 Jun 2020 by Vincent Maverick Durano

This article will talk about how to implement a custom wrapper for your ASP.NET Core and Web API applications for managing exceptions, providing meaningful and consistent responses to consumers.

ASP.NET Core Angular 2 EF 1.0.1 Web API Using Template Pack

25 Dec 2016 by syed shanu

In this article, let’s see how to create our first ASP.NET Core Angular 2 Starter Application (.NET Core) using Template pack using Entity Framework 1.0.1 and Web API to display data from the database to our Angular2 and ASP.NET Core web application.

ASP.NET Core with AutoWrapper: Customizing the Default Response Output

18 Oct 2019 by Vincent Maverick Durano

Highlights the detail about what's new in AutoWrapper Version 2. AutoWrapper is a simple, yet customizable global exception handler and response wrapper for ASP.NET Core APIs

ASP.NET Core, WEB API and Repository Class

16 Nov 2016 by syed shanu

In this article, we will see in detail how to create ASP.NET Core with Repository pattern in the WEB API.

ASP.NET Core: Building a Real-Time Online Poll System with SignalR 2, jQuery, EF Core, Core MVC and Web API 2

5 Aug 2016 by Vincent Maverick Durano

This series of article will walk you through on building a simple Online Poll System with real-time updates using SignalR 2, jQuery, Core EF, Core MVC and Web API 2.We will take a look at how each of the technologies will be used within ASP.NET Core 1.0.

ASP.NET Core: Compile Once, Host Everywhere

21 Nov 2016 by Kornfeld Eliyahu Peter

How to host a cross-platform ASP.NET Core application

ASP.NET Core: Deploy Web API and Angular from the Same Project to the Same IIS Port

13 Jul 2020 by DiponRoy

Deploy Web API and Angular from the same project to the same IIS port

ASP.NET Identity 2.0: Introduction to Working with Identity 2.0 and Web API 2.2

6 Nov 2014 by John Atten

In recent posts, I've covered a lot of ground using ASP.NET Identity 2.0 in the context of an MVC application. Since it's RTM in March of this year, Identity 2.0 has offered a substantial expansion of the Authentication/Authorization . toolset available to MVC applications. Similarly, Identity 2.0

ASP.NET MVC Hotel Booking System Using AngularJS

27 Oct 2016 by syed shanu

Tutorial for creating a simple web based Hotel Room Booking System using MVC, AngularJS, and WebAPI

ASP.NET MVC Single Page App with Upida/Jeneva (Frontend/AngularJS)

9 Sep 2019 by vladimir husnullin

This article shows how to create a single page web applciation using AngularJS. It will be helpful for people willing to study Angular and MVVM practices.

ASP.NET MVC Tooltip using Web API, Bootstrap Popover and jQuery UI dialog

20 Jul 2017 by Bryian Tan

The author is sharing an article on how to create a help tooltip for a HTML element using Web API, Bootstrap Popover and jQuery UI dialog

ASP.NET MVC User Role Base Menu Management Using WEB API And AngularJS

28 Feb 2016 by syed shanu

In this article, we will see how to create and manage a User Role based menu using ASP.NET MVC, WEB API and AngularJS.

ASP.NET MVC WebAPI Email Templating and Localization

9 Apr 2015 by Parvathaneni Mamatha

How to use Razor Views as Email Templates and Localize them using sample WebAPI

Asp.net Web Api Get Model Error on Hosting

13 Oct 2012 by emrebeysungu

I developed an Asp.net Wep api and it works fine when i run it from Visual studio.But when i publish it to my hosting ,functions which i send my models dont work.But functions which i directly send string work fine.Just get errors from functions which i send a class that i...

ASP.NET Web Api 2.2: Create a Self-Hosted OWIN-Based Web Api from Scratch

26 Jan 2015 by John Atten

Building up a lean, minimal Web Api application from scratch is a terrific way to become more familiar with how things work under the hood in a Web Api (or any other ASP.NET) project.

Asp.net WEB API : how to handle 400 bad request error when URL ends with <

18 May 2016 by ravithejag

I am trying to handle all HTTP errors to my custom error pages, but I find that when there is a

Asp.net WEB API : how to handle 400 bad request error when URL ends with <

18 May 2016 by Richard Deeming

Probably because there isn't a solution. Those requests are blocked at the kernel level, before the request even reaches IIS:Properly handle IIS request with percent sign in url (/%)[^]How IIS blocks characters in URLs[^]Use of special characters like '%' '.' and ':' in an IIS...

ASP.NET Web API Generic HttpContent Reader and Serialization Helper

21 Aug 2013 by karlodegrano

A generic HttpContent Reader that can be used to replace FromBody parameter on Http Action

ASP.net Web API multipart response

16 Jul 2013 by Aleksandar.S

Hello everyone,I'm trying to make an IP camera proxy/relay. To clear what that is, a camera can hold up only up to 15 connections. Since this should be used with a larger number of users, my idea is to make a REST web service with Web API and serve an MJPEG stream to every user. The source...

Asp.net web api, httppost send two parameters.

17 May 2016 by Kunwar Bahadur Singh

Below could be one of the possible solution[Route("api/YOURCONTROLLER/{paramOne}/{paramTwo}")] public string PostSetting(int paramOne, int paramTwo) { }The {} names need to match your parameters.

Asp.net web api, httppost send two parameters.

17 May 2016 by zhshqzyc

How can I send two parameters in asp.net web api HttpPost? Assume that I don't want to change MapRoute.What I have tried:// POST: api/Settings/163/20 [HttpPost] public bool PostSetting([FromRoute] int facilityId,int bandwidthRequest) { if...

ASP.NET Web Api: Understanding OWIN/Katana Authentication/Authorization Part I: Concepts

16 Feb 2015 by John Atten

Identity is fully compatible with the OWIN Authorization model, and when used in this manner, represents a very useful, ready-to go concrete implementation.

ASP.NET Web API: Understanding OWIN/Katana Authentication/Authorization Part III: Adding Identity

23 Mar 2015 by John Atten

This is the third post in a series in which we have built up a minimal, self-hosted, OWIN-based Web Api application essentially from scratch. In this post we'll pull in a minimal ASP.NET Identity implementation.

ASP.NET Web Api: Unwrapping HTTP Error Results and Model State Dictionaries Client-Side

3 Oct 2014 by John Atten

When working with ASP.NET Web Api from a .NET client, one of the more confounding things can be handling the case where errors are returned from the Api. Specifically, unwrapping the various types of errors which may be returned from a specific API action method, and translating the error content in

Asp.net webapi (.NET framework) object reference not set to an instance of an object.

26 May 2022 by Richard-Dev

Hi All, We have a problem with our Web API. When we try to run locally the Web API it is working but when we deploy it on the server it will throw an exception message which is Object reference not set to an instance of an object This is the...

Asp.net webapi (.NET framework) object reference not set to an instance of an object.

26 May 2022 by OriginalGriff

This is one of the most common problems we get asked, and it's also the one we are least equipped to answer, but you are most equipped to answer yourself. Let me just explain what the error means: You have tried to use a variable, property, or a...

ASP.NET WebApi - Use Redis as CacheManager

5 Oct 2014 by JoaoSousa23

This article walks you through configuration Redis and made basic operations using .net C# client.Redis is one of the fastest and feature-rich key-value stores to come from the NoSQL movement. It is similar to memcached but the dataset is not volatile, and values can either be strings lists, sets, s

ASP.NET WebApi AngularJS tester

21 Mar 2015 by Member 11188014

I need some help cause I'm looking for an easy html file using AngularJS so I can do different WebApi calls and see results, statuscode, and time of start-end... but I can't find any good and easy sample over Internet, just some using WepApi2 or Jquery... It will fantastic if someone knows...

ASP.NET WebApi: MultipartDataMediaFormatter

5 Jun 2017 by Alexander Kozlovskiy

Used for binding custom types (including files) when sending and receiving multipart encoded form data