C# – Pass an array of integers to ASP.NET Web API

arraysasp.net-web-apicrest

I have an ASP.NET Web API (version 4) REST service where I need to pass an array of integers.

Here is my action method:

public IEnumerable<Category> GetCategories(int[] categoryIds){
// code to retrieve categories from database
}

And this is the URL that I have tried:

/Categories?categoryids=1,2,3,4

You just need to add [FromUri] before parameter, looks like:

GetCategories([FromUri] int[] categoryIds)

And send request:

/Categories?categoryids=1&categoryids=2&categoryids=3

new ArrayList<>(Arrays.asList(array));

Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:

console.log(['joe', 'jane', 'mary'].includes('jane')); //true

You can also use Array#indexOf, which is less direct, but doesn't require polyfills for outdated browsers.

console.log(['joe', 'jane', 'mary'].indexOf('jane') >= 0); //true

Many frameworks also offer similar methods:

Notice that some frameworks implement this as a function, while others add the function to the array prototype.