Blazor how to pass arguments to onclick function?

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);
	}
}

But for some reason it throws an error:

Argument "1": Cannot convert from void to string

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>
}

How can I achieve that?

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>
}

I try this and worked

@onclick="(() => FunctionName(argument))"

like

@onclick="(() => GetDetail(item.UserId))"

Got idea from https://github.com/aspnet/AspNetCore/issues/15956 .

At Sign on onclick specifies it's a C# function:

@onclick = "@(() => test(i, 5*i))"

<input type="button" @onclick="@(() => functionname(paramvalue))" class="....." value="DoSomething" />

The following both input as well as button typed worked for me.

<td>
    <input type="button" class="btn btn-primary" value="Delete"
    @onclick="(() => this.DeleteTodoItem(todoItem.Id))"  />
</td>
<td>
    <button class="btn btn-primary" 
    @onclick="(() => this.DeleteTodoItem(todoItem.Id))">Delete</button>
</td>