How to call C# webapi controller function when browser close

angular.module('app', []);

app.controller('AgController','AgService', function($scope, $window) { -inherit Angular service and use $window

$scope.BroswerExit = function() {

var Broswer = AgService.BrowClose();

Broswer.then(function () {

Console.log('Success..');

}, function () {

Console.log('Error..');

});

}

};

$window.onbeforeunload = $scope.BroswerExit;--

});

app.service('AgService', function ($http) {

this.BrowClose = function () {-

var response = $http({

method: "POST",

url: '/Controllername/FunctionName', - Call Your C# WEBAPI Method Here

dataType: "json"

});

return response;

}

});

In your case its better to send a ajax request to do the task rather then redirecting the user to Web api controller.

Also send it on onbeforeunload

Or a better idea will be add a cookie with user last activity. and check on every page load the if the last activity is more then the required limit server redirect to the login page clearing the session.