How to create Master detail page with menu using mvvm model?

i want to create a master page with menu but when i using the code of this link then error is coming so my code is not working if anyone have any idea regarding this then please suggest me.
https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/navigation/master-detail-page/

error is coming in this code when i dubug the project.

namespace XamlTasks.MasterDetailPageNavigation {

[global::Xamarin.Forms.Xaml.XamlFilePathAttribute("/Users/admin/Projects/XamlTasks/XamlTasks/MasterDetailPageNavigation/MainPage.xam" +
    "l")]
public partial class MainPage : global::Xamarin.Forms.MasterDetailPage {

    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Forms.Build.Tasks.XamlG", "0.0.0.0")]
    private global::MasterDetailPageNavigation.MasterPage masterPage;

    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Forms.Build.Tasks.XamlG", "0.0.0.0")]
    private void InitializeComponent() {
        global::Xamarin.Forms.Xaml.Extensions.LoadFromXaml(this, typeof(MainPage));
        masterPage = global::Xamarin.Forms.NameScopeExtensions.FindByName<global::MasterDetailPageNavigation.MasterPage>(this, "masterPage");
    }
}

}