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Editorial Team
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Asked: 2026-06-11T19:24:23+00:00

Let’s say you have a view-model that controls a media player. It has to

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Let’s say you have a view-model that controls a media player. It has to offer standard control features like Star, Stop, Pause and Resume.

I’m thinking of two ways to design it in the view-model

1st Way : Every action has its own command.
– StartCommand
– StopCommand
– PauseCommand
– ResumeCommand

Every button in the view will be bound to it’s related command.

2nd way : One single command with different commandparameters. PerformActionCommand and an enumeration that would look like 

enum ActionEnum
{
  start, 
  stop,
  pause,
  resume
}

Which way do you think is preferable and for what reasons ?

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1 Answer

  1. Editorial Team

    In this case using separate commands is better. The commands are not very alike, so if you have one command handler, you will have to use a large switch statement inside and probably call separate methods.

    Another reason is that with different commands you easily can have different conditions when those commands are enabled or not – for example Resume is enabled only when the player is paused.

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