如何使用Html.ValidationSummary只显示一个错误讯息？(How to display only one error message using Html.ValidationSumm
I have a view (skipping redundant code for simplicity):
@model CompetencyModel
@using (Html.BeginForm())
{
@Html.ValidationSummary()
@Html.EditorFor(model => model.Results)
}
When I submit, if validation fails inside EditorFor, ValidationSummary shows the list of all validation messages for each item coming from EditorFor.
This screenshot is a view, where EditorFor is a single line with radio buttons:
But I need a single error message just saying that something failed. I tried:
@Html.ValidationSummary(true) @Html.EditorFor(model => model.Results)
But it doesn't show anything. I tried
@Html.ValidationSummary(true) @Html.EditorFor(model => model.Results) @Html.ValidationMessageFor(model => model.Results, "ERROR !!!")
But it doesn't show anything.
What am I doing wrong? Thank you.
SolutionThis will do the trick.
<style>.validation-summary-errors ul { display: none; }</style>
@Html.ValidationSummary("Can't save, you must answer all questions !!")
解决方案
The ValidationExtensions.ValidationSummary method will always return an un-ordered list of items.
Another person asked this question and choose to use JQuery to hide the items: http://stackoverflow.com/a/10837702/1220302
Another solution you could do is only display the first item in the list using CSS's nth-child pseudo tag. This of course is dependent on the browser version you're using though:
I think something like this:
.validation-summary-errors ul li:nth-child(-n+1) {
display:none;
}
我有一个观点（跳过冗余code为简单起见）：
@model CompetencyModel
@using（Html.BeginForm（））
{
@ Html.ValidationSummary（）
@ Html.EditorFor（型号=＆GT; model.Results）
}
当我提出，如果验证在 EditorFor 失败，的ValidationSummary 显示所有验证消息为每个项目从 EditorFor 。
这截图是一个视图，其中 EditorFor 是单选按钮一行：
但我需要一个单错误信息随便说什么失败。我想：
@ Html.ValidationSummary（真） @ Html.EditorFor（型号=＆GT; model.Results）
但它并不显示任何东西。我试过
@ Html.ValidationSummary（真） @ Html.EditorFor（型号=＆GT; model.Results） @ Html.ValidationMessageFor（型号=＆GT; model.Results，ERROR !!!）
但它并不显示任何东西。
我是什么做错了吗？谢谢你。
解决方案
这将这样的伎俩。
＆LT;风格＆GT; .validation-汇总错误UL {显示：无; }＆LT; /风格＆GT;
@ Html.ValidationSummary（不能保存，必须回答所有问题！）
解决方案
的 ValidationExtensions.ValidationSummary方法总是返回项目的未排序列表。
另一个人问这个问题，并选择使用jQuery隐藏物品：
http://stackoverflow.com/a/10837702/1220302
另一种解决方案，你可以做的只是利用CSS的的第n个孩子的伪标记。当然，这取决于你使用虽然浏览器版本：
我觉得是这样的：
.validation-汇总错误UL李：第n个孩子（-n + 1）{
显示：无;
}