aspnetcore/test/testapps/BasicTestApp/CounterComponent.cshtml

<h1>Counter</h1>
<p>Current count: @currentCount.ToString()</p>
<button onclick=@OnButtonClicked>Click me</button>

@functions {
    int currentCount = 0;

    void OnButtonClicked(Microsoft.Blazor.RenderTree.UIEventArgs eventArgs)
    {
        currentCount++;
    }
}