Html.Dropdownlist禁用/只讀

Question

我如何管理我的下拉列表禁用/ readOnly的 這是我的代碼：

foreach (var item in Model.TranscriptData.Transcript.Where(s => s.TermNo == termItem && s.InsteadOfLessonNo == null).ToList()) 
{ 
    @Html.DropDownList("LetterGradeValue", new SelectList(grade, "Value", "LetterGrade", string.Format("{0};{1};{2}", coefficient, letterGradeTypeId, letterGrade)), "-", new { @onchange = "ChangeValues(" + counter + ");", @class = counter }) 
} 

Answer 1

試試這個。

@Html.DropDownList("LetterGradeValue", new SelectList(grade, "Value", "LetterGrade", string.Format("{0};{1};{2}", coefficient, letterGradeTypeId, letterGrade)), "-", new { @onchange = "ChangeValues(" + counter + ")",@disabled = "disabled", @class = counter })