ASP.NET Core Blazor中获取Dom元素的值

ASP.NET Core Blazor获取前端元素的输入值示例代码如下：

@page "/event-handler-example-1"

<h1>@currentHeading</h1>

<p>
    <label>
        New title
        <input @bind="newHeading" />
    </label>
    <button @onclick="UpdateHeading">
        Update heading
    </button>
</p>

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

@code {
    private string currentHeading = "Initial heading";
    private string? newHeading;
    private string checkedMessage = "Not changed yet";

    private void UpdateHeading()
    {
        currentHeading = $"{newHeading}!!!";
    }

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

其中input元素输入的值会自动绑定到属性newHeading上。 

参考：https://docs.microsoft.com/zh-cn/aspnet/core/blazor/components/event-handling?view=aspnetcore-6.0