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topic languages products
sample
csharp
cpp
cppcx
windows
windows-uwp

Light sensor sample

Shows how to use the Windows.Devices.Sensors.LightSensor API.

Note: This sample is part of a large collection of UWP feature samples. If you are unfamiliar with Git and GitHub, you can download the entire collection as a ZIP file, but be sure to unzip everything to access shared dependencies. For more info on working with the ZIP file, the samples collection, and GitHub, see Get the UWP samples from GitHub. For more samples, see the Samples portal on the Windows Dev Center.

This sample allows the user to view the ambient light reading as a LUX value. You can choose one of two scenarios:

  • LightSensor data events
  • Poll light sensor readings

LightSensor Data Events

When you click the Enable button for the Data Events option, the app begins streaming light-sensor readings in real time.

Poll LightSensor Readings

When you click the Enable button for the Polling option, the app will retrieve the sensor readings at a fixed interval.

Related topics

Reference

Windows.Devices.Sensors namespace

Related samples

System requirements

  • Windows 10

Build the sample

  1. If you download the samples ZIP, be sure to unzip the entire archive, not just the folder with the sample you want to build.
  2. Start Microsoft Visual Studio 2017 and select File > Open > Project/Solution.
  3. Starting in the folder where you unzipped the samples, go to the Samples subfolder, then the subfolder for this specific sample, then the subfolder for your preferred language (C++, C#, or JavaScript). Double-click the Visual Studio Solution (.sln) file.
  4. Press Ctrl+Shift+B, or select Build > Build Solution.

Run the sample

The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.

Deploying the sample

  • Select Build > Deploy Solution.

Deploying and running the sample

  • To debug the sample and then run it, press F5 or select Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or selectDebug > Start Without Debugging.