绑定的剃须刀页面没有任何回报

Question

我正在尝试在 razor 页面中制作一个表单，返回用户在表单中填写的信息。出于某种原因，它没有返回任何已填写的内容。我完全不知道为什么，过去两天我一直在尝试调试。有没有人知道如何解决这个问题或我做错了什么？

class 文章（对于这篇 class 我必须使用抽象的文章）：

 public abstract class Article
    {
        public Article()
        { }

        public Article(int id, string title, string text)
        {
            this.id = id;
            this.title = title;
            this.text = text;
        }

        [Required]
        public int id { get; private set; }
       
        public string title { get; private set; }
        
        public string text { get; private set; }

        public bool HasID(int id)
        {
            if (id == this.id)
            {
                return true;
            }
            return false;
        }

        public override string ToString()
        {
            return "Id: " + id + " Title: " + title + " Text: " + text;
        }
    }

新闻文章class:

public class NewsArticle : Article
    {
        public NewsArticle()
            {}

        public NewsArticle(int id, string title, string text, bool isEmergency, string byLine, string source)
            : base(id, title, text)
        {
            this.isEmergency = isEmergency;
            this.byLine = byLine;
            this.source = source;
        }

       
        public bool isEmergency { get; private set; }
      
        public string byLine { get; private set; }
        
        public string source { get; private set; }

        public override string ToString()
        {
            return base.ToString() + " Made by: " + byLine + " Used sources: " + source;
        }
    }

以及必须填写所有内容的表格（这个相当大）：

@page
@model ModNews.Pages.ModNews_Pages.MakeNewsArticleModel
@{


}

<h1>Create News article</h1>
<div class="form_container_makeNewsArticle">
    <form method="post">
        <label asp-for="ArticleNews.id">Article number*</label>
        <span asp-validation-for="ArticleNews.id"></span><br />
        <input asp-for="ArticleNews.id" placeholder="The article id..." />

        <label asp-for="ArticleNews.title">Article title*</label>
        <span asp-validation-for="ArticleNews.title"></span><br />
        <input asp-for="ArticleNews.title" placeholder="The title of the article..." />

        <label asp-for="ArticleNews.title">Byline*</label>
        <span asp-validation-for="ArticleNews.byLine"></span><br />
        <input asp-for="ArticleNews.byLine" placeholder="It is written by..." />

        <label asp-for="ArticleNews.text">Article text*</label>
        <span asp-validation-for="ArticleNews.text"></span><br />
        <input asp-for="ArticleNews.text" placeholder="Your article text..." />

        <div class="normalOrEmergency">
            <label asp-for="ArticleNews.isEmergency">Is it an emergency:</label>
            <select asp-for="ArticleNews.isEmergency">
                <option value=""></option>
                <option value="Yes">Yes</option>
                <option value="No">No</option>
            </select>
        </div>

        <label asp-for="ArticleNews.source">Article source*</label>
        <span asp-validation-for="ArticleNews.source"></span><br />
        <input asp-for="ArticleNews.source" placeholder="Your article source..." />

        <div class="button_container_makeArticle">
            <input type="submit" value="Make Article" />
        </div>
    </form>
    <div><p>@ViewData["Message"]</p></div>
</div>

填写所有内容并按下按钮后，这是给定的结果：

The article id is: 0The title is: It is written by: The written text is: It was anFalse news articleAnd the used source was: False

Answer 1

for some reason it gives nothing back that has been filled in.

确保 删除 setter 的私有访问修饰符。对于Asp.Net Core ModelBinder，它会检查属性是否是私有访问setter。

不确定您的 PageModel 是什么，这里有两种获取表单数据的有效方法。

第一种方式：

[BindProperty]  //be sure add this...
public NewsArticle ArticleNews { get; set; }

public void OnPost()
{
     //....
}

第二种方式：

public NewsArticle ArticleNews { get; set; }

public void OnPost([Bind(Prefix = "ArticleNews")] NewsArticle newsArticle)
{
     //....
}

绑定的剃须刀页面没有任何回报

Binded razor page gives nothing back

c#

data-binding

asp.net-core

razor-pages