如果我在没有填写某些必填字段的情况下提交表单,当页面重新加载时会出现错误,填写的字段会保留其值,但前提是我使用html帮助程序,如下所示:
@using (Html.BeginForm())
{
@Html.ValidationSummary()
<p>Your name: @Html.TextBoxFor(x => x.Name) </p>
<p>Your email: @Html.TextBoxFor(x => x.Email)</p>
<p>Your phone: @Html.TextBoxFor(x => x.Phone)</p>
<p>
@Html.DropDownListFor(x => x.WillAttend, new[] {
<input new SelectListItem() {
Text = "Yes, I'll be there",
Value = bool.TrueString},
new SelectListItem() {
Text = "No, I can't come",
Value = bool.FalseString}
}, "Choose an option")
</p> type="submit" value="Submit RSVP" />
}
但我想使用常规的html而不是这样的帮助(然后记住这些值):
<form action="/Home/RsvpForm" method="post">
@Html.ValidationSummary()
<p>
Your name:
<input type="text" name="Name" value="" />
</p>
<p>
Your email:
<input type="text" name="Email" value="" />
</p>
<p>
Your phone:
<input type="text" name="Phone" value="" />
</p>
<p>
Will you attend?
<select name="WillAttend">
<option value="">Choose an option</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>
</p>
<button>Submit</button>
</form>
那么如何在不使用html助手的情况下让表格记住正确输入的值,是否可能?
编辑:模型和整个视图
GuestResponse模型:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
namespace PartyInvites.Models
{
public class GuestResponse
{
[Required(ErrorMessage="Enter name")]
public string Name { get; set; }
[Required(ErrorMessage = "Enter email")]
public string Email { get; set; }
[Required(ErrorMessage = "Enter phone")]
public string Phone { get; set; }
[Required(ErrorMessage = "Specify")]
public bool? WillAttend { get; set; }
}
}
整个观点:
@model PartyInvites.Models.GuestResponse
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>RsvpForm</title>
</head>
<body>
<form action="/Home/RsvpForm" method="post">
@Html.ValidationSummary()
<p>
Your name:
<input type="text" name="Name" value="" />
</p>
<p>
Your email:
<input type="text" name="Email" value="" />
</p>
<p>
Your phone:
<input type="text" name="Phone" value="" />
</p>
<p>
Will you attend?
<select name="WillAttend">
<option value="">Choose an option</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>
</p>
<button>Submit</button>
</form>
</body>
</html>
答案 0 :(得分:2)
您可以使用常规html,只需设置输入文本的值,即可接收您的model.property,如:
<input type="text" name="Phone" value="@Model.Phone" />
答案 1 :(得分:2)
类似的东西:
@model your_model
<form action="/Home/RsvpForm" method="post">
@Html.ValidationSummary()
<p>
Your name:
<input type="text" name="Name" value="@Model.Name" />
</p>
<p>
Your email:
<input type="text" name="Email" value="@Model.Email" />
</p>
<p>
Your phone:
<input type="text" name="Phone" value="@Model.Phone" />
</p>
<p>
Will you attend?
<select name="WillAttend">
<option value="">Choose an option</option>
<option value="true">Yes</option>
<option value="false">No</option>
</select>
</p>
<button>Submit</button>
答案 2 :(得分:1)
你的模型是null。 Null没有电话号码的概念,因为没有对象。这就是为什么你在尝试无中断地访问Phone时遇到错误的原因。每次尝试访问Model的属性时,都需要处理null case。
您可以将此用于您的财产:
@(Model != null ? Model.Phone : "")
或者,如果您能够使用C#6语法,请随意使用:
@Model?.Phone