Razor 如何在我的方法参数中获得这两个文本框值？

您需要将参数名称与输入字段的name属性相匹配

 public string sendcode(string MNumber, string SongName)
        {
return (MNumber+" "+SongName);
}

 public string sendcode(string MNumber, string SongName)
        {
return (MNumber+" "+SongName);
}

<input name="sSongName" type="hidden" value="@ViewBag.selectsong"/>
<input name="MNumber" type="text" class="mobileinput"/>


public string sendcode(string sSongName, string MNumber)
{
     //Do Something
}