@using Microsoft.AspNetCore.Blazor
<h1>Counter</h1>
<p>Current count: @currentCount</p>
<p><button onclick="@((handleClicks ? (Action<UIMouseEventArgs>)IncrementCount : null))">Click me</button></p>

<label>
    <input type="checkbox" bind="@handleClicks" />
    Toggle click handler registration
</label>

@functions {
    int currentCount = 0;
    bool handleClicks = true;

    void IncrementCount(UIMouseEventArgs e)
    {
        currentCount++;
    }
}