Blazor之onclick事件更新值

<h1>Event Handler Example 1</h1>

<h2>@headingValue</h2>

<p>
<button @onclick="UpdateHeading">
Update heading
</button>
</p>

<p>
<label>
<input type="checkbox" @onchange="CheckChanged" />
@checkedMessage
</label>
</p>

@code {
private string headingValue = "Initial heading";
private string checkedMessage = "Not changed yet";

private void UpdateHeading()
{
headingValue = $"New heading ({DateTime.Now})";
}

private void CheckChanged()
{
checkedMessage = $"Last changed at {DateTime.Now}";
}
}