Default checked is not working for Html.RadioButtonFor-CodePudding

I'm using Html radio button for my model value and I want default check for radio button, but it's not working:

@Html.RadioButtonFor(model => model.Answer, 1, new { id = @item.ID, @checked = "checked" })
@Html.RadioButtonFor(model => model.Answer, 2, new { id = @item.ID   "_1"})
@Html.RadioButtonFor(model => model.Answer, 3, new { id = @item.ID   "_2" })

It render as

<input data-val="true"  id="8" name="Answer" type="radio" value="1" />

CodePudding user response：

As we know :

Html.RadioButtonFor Define:

Html.RadioButtonFor(model => property, object value, object htmlAttributes)

Object HtmlAttributes: Set additional properties to a radio button.

Html.RadioButton Define:

RadioButton(string name, object value, bool isChecked, object htmlAttributes)

Bool isChecked: Set default radio button selection

I want default check for radio button

You can try:

  @Html.RadioButton("Answer", 1,true,new { id = 8 })

result: