禁用并选择asp.net mvc Html.RadioButton

如何设置

selected=true

并禁用此单选按钮

<%= Html.RadioButtonFor(m =>m.AddToLevel ,new {id = "rdSameas" }) %>

m.AddToLevel，new{id=“rdSameas”}）%>

m.AddToLevel，新的{id=“rdSameas”，checked=“checked”，disabled=“disabled”}%>

第二个参数是值：

true

用于所选：

<%= Html.RadioButtonFor(m => m.AddToLevel, true, new { id = "rdSameas", disabled = "disabled"}) %>

m.AddToLevel，true，新的{id=“rdSameas”，disabled=“disabled”}）%>

<%= Html.RadioButtonFor(m => m.AddToLevel, true, new { id = "rdSameas", disabled = "disabled"}) %>