angular.js routing 404 not found error in asp.net

I am writing my blog site with using angular.js and asp.net webapi. I did url routing with angular.js. when I click url but I get 404 not found error. How to fix this problem?

var blogSite = angular.module("blogSite", ["ngRoute"]);
blogSite.config(['$routeProvider', function ($routeProvider) {
$routeProvider
    .when("post/:post", {
        teplateUrl: 'blogpost.html',
        controller: 'blogPostController'
    })
    .otherwise({
        redirectTo: 'index.html'
    });
}]);

blogSite.controller("mainPageController", function ($scope, $http,     $routeParams) {
var url = baseUrl + "getpost";
$http.get(url)
    .success(function (data, status, headers, config) {
        if (data.length > 0) {
            $scope.LastBlogPosts = data;
        }
        else {
            $scope.LastBlogPosts = null;
        }
    })
    .error(function (data, status, headers, config) {
        console.log(status);
    });
});

blogSite.controller("blogPostController", function ($scope, $http, $routeParams) {
 $scope.TestMessage = "Test Message"
});

index.html page

div ng-controller="mainPageController">
            <ul>
                <li ng-repeat="blogPost in LastBlogPosts">
                    <a href="post/{{blogPost.PostUrl}}" class="lastPostUrl mainPagePostTitle">{{blogPost.PostTitle}}</a>
                </li>
            </ul>
        </div>
    </div>
</div>
<div ng-view>

</div>