Hi @prachi and thanks for your query. To correctly initialise the eye tracker in a Core SDK application, you can follow our tutorial to illustrate the correct syntax @ https://developer.tobii.com/consumer-eye-trackers/core-sdk/getting-started/
I am afraid that we do not support calling calibration programmatically but you can call a quick 3 point calibration using the windows command:
“c:\Program Files (x86)\Tobii\Tobii EyeX Config\Tobii.EyeX.Configuration.exe” –quick-calibration
Which you can still introduce into your code using the System.Diagnostics.Process.Start function within DotNet.
To see further examples of how to setup eye tracking in your applications, please check out the Core SDK samples @ https://github.com/Tobii/CoreSDK