CategoryHandler

To get a new instance, either create an inline variable or use your favorite Locator:

//inline var
var handler = new CategoryHandler();

//MVVMLight (or any other Locator):
SimpleIoc.Default.Register<ICategoryHandler>(()=> new CategoryHandler());

If you want to add the "If-Modified-Since"-Header and "User-Agent"-Header, just fill in the parameters:

//inline var
var handler = new CategoryHandler(DateTime.Now, "MyAwesomeApp", "1.0.0");

//MVVMLight (or any other Locator):
SimpleIoc.Default.Register<ICategoryHandler>(()=> new CategoryHandler(DateTime.Now, "MyAwesomeApp", "1.0.0"));

getting a list of categories with default parameters:

var categories = handler.GetCategoriesAsync("yourBaseUrl");

Note that you have optional parameters for pages, page counts, and order of the results.

get a single category by its id:

var category = handler.GetCategoryAsync("yourBaseUrl", 12345);

All above calls will result in a WordPressEntitySet<TWordPressEntity> or a WordPressEntity<TWordPressEntity>. If there was an error on the API side, the Error property will be filled, otherwise it will be null and the Value will hold the result.