c# - 动态显示 Razor ValidationMessageFor

Question

我在页面顶部进行了一些验证。我只想在出现错误时才动态显示水平行。

<tr><td colspan="4">@Html.ValidationMessageFor(model => model.tempHouseHoldSSNVerification, null, new { style = "color:red" })</td></tr>
<tr><td colspan="4">@Html.ValidationMessageFor(model => model.tempHouseHoldCitizenVerification, null, new { style = "color:red" })</td></tr>

我想做的是在 Razor 语法中有这样的东西

@if (model.tempHouseHoldSSNVerification isinvalid)
{  
    <tr><td colspan="4">@Html.ValidationMessageFor(model => model.tempHouseHoldSSNVerification, null, new { style = "color:red" })</td></tr>
 }

我正在尝试在 razor 中找到可以动态显示水平行的语法。有什么建议吗？？

Answer 1

如果您只想在出现错误时显示错误消息。您可以通过 ViewContext.ViewData.ModelState 使用 ModelState 验证。

例子:

@if (!ViewContext.ViewData.ModelState.IsValid)
{
   <tr>
    <td colspan="4">@Html.ValidationMessageFor(model => model.tempHouseHoldSSNVerification, null, new { style = "color:red" })
   </td>
  </tr>
}