In the Client app create a new folder named Components. This is not a special name, we can choose any name we wish.

Once you’ve created the new Components folder, create a file within it named MyFirstComponent.razor and enter the following mark-up.

<div>
    <h2>This is my first component</h2>
</div>

Now edit the Index.razor file. At this point we can either reference the component with a fully qualified name:

<CreatingAComponent.Client.Components.MyFirstComponent/>

Or edit /_Imports.razor and add @using CreatingAComponent.Client.Components. The using statements here are cascaded into all Razor views – which means the mark-up to use the new component in /Pages/Index.razor no longer needs a namespace.

@page "/"

<h1>Hello, world!</h1>
<MyFirstComponent/>

Welcome to your new app.

<SurveyPrompt Title="How is Blazor working for you?" />

Now run the app and we’ll see the following.