SingleOrDefault Vs FirstOrDefault

 SingleOrDefault() Vs. FirstOrDefault() in LINQ Query Single() / SingleOrDefault() First () / FirstOrDefault() Single() - There is exactly 1 result, an exception is thrown if no result is returned or more than one result.  SingleOrDefault() – Same as Single(), but it can handle the null value. First() - There is at least one result, an exception is thrown if no result...

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Web API Filters

Web API includes filters to add extra logic before or after action method executes. Filters can be used to provide cross-cutting features such as logging, exception handling, performance measurement, authentication and authorization. Filters are actually attributes that can be applied on the Web API controller or one or more action methods. Every filter attribute class must implement IFilter interface...

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Enterprise Library DAAB - C# .Net

Enterprise Library Data Access Application Block In C# .NET What is a Data Access Application Block (DAAB)?  A Data Access Application Block encapsulates the performance and resource management best practices for accessing Microsoft SQL Server databases. It can easily be used as a building...

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Router Guards- Angular 2

Protecting routes is a very common task when building applications, as we want to prevent our users from accessing areas that they’re not allowed to access, or, we might want to ask them for confirmation when leaving a certain area. Angular’s router provides a feature called Navigation Guards that...

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MongoDB - Installation and Setup

Here you will get to know about Installation and setup of MongoDB for your NodeJS Application. you need to just follow the below steps. 1- First of all you need to install MongoDB in your System.     Url : https://www.mongodb.com/download-center#community 2- Now Install the Mongochef...

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Routing - Angular

What are the main routing Component? Angular provides 3 different components for routing configuration: Routes is the configuration to describe application’s different routes RouterOutlet is a “placeholder” component that holds the view for each route RouterLink is a directive to link to routes Routes: Routes is an object to describe the routes of the application. const routes: Routes  = [     { path: '', redirectTo: 'login', pathMatch:'full' },     { path: 'login', component: LoginComponent },     { path: 'home', component: HomeComponent ,      children: [       { path: '', component: DashBoardComponent },       {path: 'events', component: EventsComponent}      ]},     { path: 'register', component: RegisterComponent },     { path: 'about', component: AboutComponent },     { path: '**', component: p404Component },    ]; We...

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