Getting Started with Blazor

Hi everyone,

I'm new to Blazor and trying to get my first project set up. I've followed the official documentation to create a new Blazor Server app using the .NET CLI:

dotnet new blazorserver -o MyBlazorApp

When I try to run it with dotnet run, it builds successfully, but I'm seeing some odd behavior in the browser. The counter component increments multiple times when I click it, and the fetch data page doesn't seem to load correctly. Has anyone else encountered this with initial setups?

Are there any common pitfalls or prerequisites I might have missed?

Hi John,

Welcome to Blazor! That sounds like a common issue with hot reloading or browser refresh. Make sure you're using the latest stable versions of .NET and the Blazor templates.

Sometimes, clearing your browser cache or performing a hard refresh (Ctrl+Shift+R or Cmd+Shift+R) can help resolve these kinds of issues, especially if you've had previous Blazor projects or experiments running.

Also, check the browser's developer console (F12) for any JavaScript errors that might be occurring during page load or component interaction.

Hey John,

Regarding the counter issue, it might be related to how event handlers are wired up. In Blazor, event handlers are typically prefixed with an '@'. For example, a button click might look like:

<button @onclick="IncrementCount">Click me</button>

Ensure your IncrementCount method in the Counter.razor component is correctly defined and only called once per click.

For the fetch data page, check the HttpClient configuration. Make sure it's correctly configured to fetch data from your API endpoint. Often, a simple typo in the URL or a missing configuration can cause this.