Blazor:如何在< select>中使用onchange事件.还使用@bind时? [英] Blazor: How to use the onchange event in <select> when using @bind also?

问题描述

在<select>中进行选择后，我需要能够运行一个函数.问题是我也与@bind绑定在一起，当我尝试使用@onchange时，我收到一条错误消息，指出它已经被@bind使用.我尝试使用@onselectionchange，但这不执行任何操作(不运行该功能).我可能会忘记@bind，而只是将@onchange分配给一个函数，但是我不确定如何将所选值传递给该函数.

I need to be able to run a function after a selection in made in a <select>. The issue is I'm also binding with @bind and I get a error when I try to use @onchange stating that it is already in use by the @bind. I tried using @onselectionchange, but that does nothing(doesn't run the function). I could forget the @bind and just assign @onchange to a function, but I'm not sure how to pass the selected value to the function.

我有以下代码:

<select @bind="@SelectedCustID" @ @onchange="@CustChanged" class="form-control">
    @foreach (KeyGuidPair i in CustList)
    {
        <option value="@i.Value">@i.Text</option>
    }
</select>

谢谢.

推荐答案

<input @bind="MyProperty" />

@code  {
    private string myVar;

    public string MyProperty
    {
        get { return myVar; }
        set
        {
            myVar = value;
            SomeMethod();
        }
    }

    private void SomeMethod()
    {
        //Do something
    }
}

这篇关于Blazor:如何在< select>中使用onchange事件.还使用@bind时?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！