You just need to add [FromUri] before parameter, looks like:
GetCategories([FromUri] int[] categoryIds) And send request:
/Categories?categoryids=1&categoryids=2&categoryids=3 You just need to add [FromUri] before parameter, looks like:
GetCategories([FromUri] int[] categoryIds) And send request:
/Categories?categoryids=1&categoryids=2&categoryids=3