Blazor如何将参数传递给onclick函数? [英] Blazor how to pass arguments to onclick function?

问题描述

我想使按钮onclick功能需要一些输入.

I'd want to make button onclick function that takes some input.

<button onclick="@test(123, 456)">Check</button>

@functions
{
    public void test(int a, int b)
    {
        Console.WriteLine(a + b);
    }
}

但是由于某种原因，它会引发错误:

But for some reason it throws an error:

Argument "1": Cannot convert from void to string

稍后我想在for循环中创建这些按钮

Later I'd want to create those buttons in for loop like

@for (int i = 0; i < 10; i++)
{
    <button onclick="@test(i, 5 * i)">Check</button>
}

我该如何实现?

推荐答案

尝试使用lambda.您将onclick绑定到函数的结果，而不是函数本身.

Try it with a lambda. You're binding the onclick to the result of the function rather than the function itself.

@for (int i = 0; i < 10; i++)
{
    var buttonNumber = i;
    <button @onclick="@(e => test(buttonNumber, 5 * buttonNumber))">Check</button>
}

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