c# - 如果文本框有值(value)，如何将其设置为只读？

Question

我想将文本框设置为只读，前提是它在 MVC 中具有可见值。

所以我写

 <tr>
 @if (model.first_name != "" ) { 
   <td >
                @Html.LabelFor(model => model.first_name):
            </td>
            <td >
                @Html.TextBoxFor(model => model.first_name)
                <span class="required">*</span>
                @Html.ValidationMessageFor(model => model.first_name)
            </td>
@ else  
  <td >
  @Html.LabelFor(model => model.first_name):
            </td>
            <td >
                @Html.EditorFor(model => model.first_name)
                <span class="required">*</span>
                @Html.ValidationMessageFor(model => model.first_name)
            </td>
@}

            <td >
                @Html.LabelFor(model => model.first_name):
            </td>
            <td >
                @Html.EditorFor(model => model.first_name)
                <span class="required">*</span>
                @Html.ValidationMessageFor(model => model.first_name)
            </td>
        </tr>

但是是行不通的..怎么解决？？我该怎么做？？

Answer 1

您可以使字段 readonly="readonly" 而不是 disabled="disabled" 只读字段值将被提交到服务器，同时仍然是不可编辑的由用户。