# Loading Indicators

# Status Informations on running commands

Implementing a loading spinner is quite easy with PowerMVVM. You have to inherit from AStatusProvider and implement your calls to the UI framework. This allows to

• show and hide a loding indicator

Register the status provider via the static property:

Command.StatusProvider = new MyStatusProviderImplementation();

# Status Informations for separate commands

With Version 1.0.6 loading indicators can be set for each command differently, if necessary. This provides more flexibility when showing, e.g. a loading indicator directly next to a button, while it might not be necessary to block the whole page, as the general indicator might do.

The ACommand exposes the following API for loading indicator customisation:

command.UseLoadingIndicator()                   // display the loading indicator (disabled by default)
       .UseLoadingIndicator(ILoadingIndicator)  // control an external loading indicator instance
       .UseLoadingIndicator(show, hide)         // control any loading states with show and hide callbacks

The ILoadingIndicator interface needs a proper implementation of the following methods for showing and hiding logic:

Task ShowLoadingAsync();
Task HideLoadingAsync();