ASP.NET MVC所需字段指示符 [英] ASP.NET MVC Required Field Indicator

问题描述

有关要求已在归功于我的ASP.NET MVC视场，有没有什么办法的框架来自动呈现某种指标，作为元数据所需的字段被标记？

For fields in my ASP.NET MVC view that have been attributed as required, is there any way for the framework to render some sort of indicator automatically that the field is marked as required in metadata?

推荐答案

应该可以用CSS来做到这一点，因为在MVC3这些自定义增加属性的元素：

Should be able to do this with CSS since MVC3 adds in those custom attributes to the element:

 <input data-val="true" data-val-required="The Username field is required." id="Username" name="Username" type="text" value="" />

您可以右键关数据-VAL-需要像这样的CSS：

You could key off the data-val-required in CSS like so:

输入[数据-VAL-要求] {
   背景：红
}
或者设置一个星号的背景图像等。

input[data-val-required] { background:red } or set a background image of an asterisk etc.

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