使用ViewModel进行验证:
public class CCvm
{
[Required(ErrorMessage = "Please enter your Name")]
public string cardHolderName { get; set; }
}
我的控制器在帖子中调用任务:
public async Task<ActionResult> Pay(FormCollection form, CCvm model)
{
if (!ModelState.IsValid)
{
return View(model);
}
}
观点:
@model GCwholesale.Models.CCvm
@{
Layout = "~/Views/Shared/_HomeSubPageLayout.cshtml";
ViewBag.Title = "Secure Checkout";
}
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="Payment">
<label>Name on Card: </label>
@Html.EditorFor(model => model.cardHolderName, new { htmlAttributes = new { @placeholder = "Cardholder Name Please", @Value = ViewBag.Name } })<br />
@Html.ValidationMessageFor(model => model.cardHolderName)
<button class="submitCheckout">SUBMIT NOW</button>
</div>
}
但当验证失败时,表单中的数据就会消失。
谢谢你看。
您不需要在EditorFor中设置@Value = ViewBag.Name
。
@Html.EditorFor(model => model.cardHolderName,
new { htmlAttributes = new { @placeholder = "Cardholder Name Please" } })
此外,您不需要FormCollection作为参数,因为您已经有了CCvm模型。
public async Task<ActionResult> Pay(CCvm model){
{
//...
}
@Value = ViewBag.Name
您没有设置ViewBag.Name,因此它不会有值,并且会导致输入为空。去掉它,让HtmlHelper根据发布的模型中的值来设置它。