C#•6mo ago

An event running every few seconds, want it to run only once

I'm making a WPF application and for that using GeoCoordinateWatcher but the GeoCoordinateWatcher event is supposed to run only once until I want it to run again, but it automatically runs every seconds and i have no idea why. The event name is SettingWeatherData Keep in mind im a beginner and dont have a lot of idea bout events & delegates https://pastebin.com/81UBJjPC

4 Replies

Anu6is•6mo ago

SettingWeatherData is not your event, that's your event handler. The event you subscribe to is the PositionChanged event which I imagine is triggered everytime the position changes

Cattywampus•6mo ago

Make a boolean property and add a check for that property before executing the rest of the function.

public bool blockExecution {get;private set}

private void SettingWeatherData(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)
{
  if(blockExecution)
    return;  

  //Do the rest of the code here
}

public bool blockExecution {get;private set}

private void SettingWeatherData(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)
{
  if(blockExecution)
    return;  

  //Do the rest of the code here
}

Anu6is•6mo ago

I would look into the other options that the API provides and see if there's a better way to achieve what you want. For example, there is a position property that you can call whenever you want instead of relying on the event. There is also a MovementThreshold property that can be used to limit how often the position changes event fires (places a dependency on the distance moved)

!Rushaan•6mo ago

ik im too late to respond but i fixed it soon after by unsubscribing from the event handler, ty for trying to help tho

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An event running every few seconds, want it to run only once