Showing all posts tagged: 'WebApi'

A 5-post collection

ASP.NET MVC WebAPI - Optional parameters

ASP.NET WebAPI is a powerful tool for creating APIs quickly and efficiently in .NET. In fact, it takes minimal effort to expose your data through WebAPI though this is both a curse and a blessing. Blessing because it's so easy, curse because you need to be very careful of what you expose. You need to ensure that you're not exposing unwanted information and only provide authenticated access when necessary. Securing WebAPI is a big subject so I'll leave that for another post. Today, I'll show you how to create WebAPI controller methods that take optional parameters. 1. Using default …[read more]

Upload files in ASP.NET MVC with JavaScript and C#.

In an earlier post, I described how to implement a file upload using Ajax and ASP.NET WebAPI. This works great but it means that you need to have a WebAPI controller to manage the requests. If you already have a WebAPI in your solution then you can simply extend it to manage file uploads. However, there's no reason to add a WebAPI only for file uploads. Instead you can use an MVC controller to perform the same task. The goal is to upload a file to the server using just JavaScript and an MVC controller without submitting a form. …[read more]

Upload files to the server using Javascript and MVC WebAPI

The ASP.NET WebAPI is really versatile and powerful and I like to use it as much as I can when I develop for the web. I know that MVC controller methods can also process ajax requests, but I like the separation of concerns. WebAPI for REST calls and MVC for Views and the ViewModels manipulation. Note: if you still want to use MVC instead of WebAPI for your server implementation, have a read here. Recently, I had to implement a method to upload files to the server from an MVC view. I decided to use ajax and WebAPI. Once …[read more]

How to Implement Cross Domain Requests (CORS) in WebAPI, old school

WebAPI is awesome. It allows .NET developers to quickly set up a public API for any data with minimal effort. WebAPI has been available for a while and with each iteration, it grows stronger and more versatile. However, there is no point in offering an API that no one can consume it. WebAPI works great straight out of the box for GET requests. However, once you start using it for POST, PUT or DELETE operations, then CORS kicks in and drops requests from hitting the server. CORS stops any cross domain requests so if your api is running at www. …[read more]

WebApi controller action with comma-separated parameter values

Today I've run across an issue where I had to create a WebAPI GET action that could accept, among other things, a parameter with comma-separated values. If you ever need to implement this, then that's one way to do it: Create an action filter The action filter will be used to intercept the action call and process the comma-separated parameter. Then, you simply assing the action filter to the controller action and you can carry on with the next task at hand. A practical example First, let's create the action filter. Create a new class and name it something like …[read more]