Question

我有一个textarea，我可能想在某些条件下禁用。我想将此信息作为ViewBag参数发送，但我无法弄清楚如何做到这一点。

我视图中的textarea看起来像这样

@Html.TextAreaFor(f => f.ProgressDetail, new { @class = "followUpProgress", ViewBag.DisableProgressDetail })

在控制器中我有这样的东西：

if(conditions)
    ViewBag.DisableProgressDetail = "disabled=\"disabled\"";

然而，html输出是这样的：

<textarea DisableProgressDetail="disabled=&quot;disabled&quot;" class="followUpProgress" cols="20" id="ProgressDetail" name="ProgressDetail" rows="2">
</textarea>

Answer 1

你想要的是这个：

@Html.TextAreaFor(f => f.ProgressDetail, new { @class = "followUpProgress", disabled = ViewBag.DisableProgressDetail })

然后在您的控制器中，只需创建它：

ViewBage.DisableProgressDetail = "disabled";

Answer 2

如果未指定属性，则来自属性的名称，这就是您获取为ViewBag属性命名的html属性的原因。让它运作的一种方法是：

// in the view:
@Html.TextAreaFor(f => f.ProgressDetail, new { @class = "followUpProgress", ViewBag.disabled })
-------------------------------------------------------------
// in the controller
ViewBag.disabled = "disabled";

如果你不喜欢这种方法，你可以像这样设置禁用位：

// in the view:
@Html.TextAreaFor(f => f.ProgressDetail, new { @class = "followUpProgress", disabled=ViewBag.DisableProgressDetail })
-------------------------------------------------------------
// in the controller:
if(conditions)
    ViewBag.DisableProgressDetail = "disabled";
else
    ViewBag.DisableProgressDetail = "false";

// or more simply
ViewBag.DisableProgressDetail = (conditions) ? "disabled" : "false";

Answer 3

它不起作用。你可以试试这个：

//In the controller

if(Mycondition){ ViewBag.disabled = true;}
else { ViewBag.disabled = false;}

//In the view

@Html.TextBoxFor(model => model.MyProperty, ViewBag.disabled ? (object)new { @class = "MyClass", size = "20", maxlength = "20", disabled = "disabled" } : (object)new { @class = "MyClass", size = "20", maxlength = "20" })

如何使用ViewBag或Model值在mvc中添加HtmlAttributes？

3 个答案: