C# RSS Syndication，如何以编程方式格式化文本

Question

我正在尝试构建新闻提要应用程序，但在格式化结果时遇到问题。我确定问题只是缺乏经验。我遇到了两个主要问题。第一个是item.summary.text 从摘要中拉出一堆链接。

我遇到的另一个问题是将所有标题加粗并更改它们的颜色。我还使用了富文本框，这可能不是表示数据的最佳方式。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ServiceModel.Syndication;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Xml.Linq;
using System.IO;
using System.Net;
using System.Xml;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Ltest1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string url = "  http://feeds.reuters.com/reuters/topNews";
            XmlReader reader = XmlReader.Create(url);
            SyndicationFeed feed = SyndicationFeed.Load(reader);
            reader.Close();
            foreach (SyndicationItem item in feed.Items)
            {
                Fodder_Box.SelectionStart = "Title".Length;
                Fodder_Box.SelectionColor = Color.Red;
                Fodder_Box.SelectionFont = new Font("Arial", 20, FontStyle.Bold);
                Fodder_Box.AppendText("Title: " + item.Title.Text + Environment.NewLine + Environment.NewLine);
                Fodder_Box.SelectionStart = "Summary".Length;
                Fodder_Box.SelectionColor = Color.Black;
                Fodder_Box.SelectionFont = new Font("Arial", 20, FontStyle.Regular);
                Fodder_Box.AppendText("Date: " + item.PublishDate.ToString("yyyy/MM/dd H:MM:ss") + Environment.NewLine + Environment.NewLine);
                Fodder_Box.AppendText("Summary: " + item.Summary.Text + Environment.NewLine);
                Fodder_Box.AppendText("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" + Environment.NewLine + Environment.NewLine);
            }
        }
    }
}

Answer 1

您可以使用更 HTML 友好的控件来代替 RichTextBox，例如 WebBrowser 控件。然后你可以构建一个 HTML 字符串并用 CSS 格式化它。假设您向窗体添加了一个名为 webBrowser 的 WebBrowser 控件。然后你可以用这样的东西替换你当前的 foreach 循环：

var text = new StringBuilder();

foreach (SyndicationItem item in feed.Items)
{
    text.AppendFormat("<p style='font-family:arial;color:red;font-size:20;font-weight:bold;'>Title: {0}</p>", item.Title.Text);
    text.AppendLine("</br>");
    text.AppendLine("</br>");

    text.AppendFormat("<p style='font-family:arial;font-size:20;'>Date: {0:yyyy/MM/dd H:MM:ss}</p>", item.PublishDate);
    text.AppendLine("</br>");
    text.AppendLine("</br>");

    text.AppendFormat("<p style='font-family:arial;font-size:20;'>Summary: {0}</p>", item.Summary.Text);
    text.AppendLine("</br>");
    text.AppendLine("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
    text.AppendLine("</br>");
    text.AppendLine("</br>");
}

webBrowser.DocumentText = text.ToString();

另见 How to: Add Web Browser Capabilities to a Windows Forms Application

C# RSS Syndication，如何以编程方式格式化文本

C# RSS Syndication, How to format text programmatically

c#

rss

formatting

syndication

winforms