c# - 文本到 HTML 转换

Question

我正在做的是从数据库加载一些字符串，我做得很好。我阅读了它并将其转换为 HTML ...有点.. 使用以下代码：

    private string StripHTML(string source)
    {
        try
        {
            string result;

            // Remove HTML Development formatting
            // Replace line breaks with space
            // because browsers inserts space
            result = source.Replace("\r", " ");
            // Replace line breaks with space
            // because browsers inserts space
            result = result.Replace("\n", " ");
            // Remove step-formatting
            result = result.Replace("\t", string.Empty);
            // Remove repeating spaces because browsers ignore them
            result = System.Text.RegularExpressions.Regex.Replace(result,
                                                                  @"( )+", " ");

            // Remove the header (prepare first by clearing attributes)
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*head([^>])*>", "<head>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"(<( )*(/)( )*head( )*>)", "</head>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(<head>).*(</head>)", string.Empty,
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // remove all scripts (prepare first by clearing attributes)
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*script([^>])*>", "<script>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"(<( )*(/)( )*script( )*>)", "</script>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            //result = System.Text.RegularExpressions.Regex.Replace(result,
            //         @"(<script>)([^(<script>\.</script>)])*(</script>)",
            //         string.Empty,
            //         System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"(<script>).*(</script>)", string.Empty,
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // remove all styles (prepare first by clearing attributes)
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*style([^>])*>", "<style>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"(<( )*(/)( )*style( )*>)", "</style>",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(<style>).*(</style>)", string.Empty,
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // insert tabs in spaces of <td> tags
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*td([^>])*>", "\t",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // insert line breaks in places of <BR> and <LI> tags



            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*br( )*>", "\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*li( )*>", "\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // insert line paragraphs (double line breaks) in place
            // if <P>, <DIV> and <TR> tags
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*div([^>])*>", "\r\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*tr([^>])*>", "\r\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<( )*p([^>])*>", "\r\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // Remove remaining tags like <a>, links, images,
            // comments etc - anything that's enclosed inside < >
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"<[^>]*>", string.Empty,
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // replace special characters:
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @" ", " ",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&bull;", " * ",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&lsaquo;", "<",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&rsaquo;", ">",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&trade;", "(tm)",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&frasl;", "/",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&lt;", "<",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&gt;", ">",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&copy;", "(c)",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&reg;", "(r)",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            // Remove all others. More can be added, see
            // http://hotwired.lycos.com/webmonkey/reference/special_characters/
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     @"&(.{2,6});", string.Empty,
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);




            // for testing
            //System.Text.RegularExpressions.Regex.Replace(result,
            //       this.txtRegex.Text,string.Empty,
            //       System.Text.RegularExpressions.RegexOptions.IgnoreCase);

            // make line breaking consistent
            result = result.Replace("\n", "\r");

            // Remove extra line breaks and tabs:
            // replace over 2 breaks with 2 and over 4 tabs with 4.
            // Prepare first to remove any whitespaces in between
            // the escaped characters and remove redundant tabs in between line breaks
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\r)( )+(\r)", "\r\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\t)( )+(\t)", "\t\t",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\t)( )+(\r)", "\t\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\r)( )+(\t)", "\r\t",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            // Remove redundant tabs
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\r)(\t)+(\r)", "\r\r",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            // Remove multiple tabs following a line break with just one tab
            result = System.Text.RegularExpressions.Regex.Replace(result,
                     "(\r)(\t)+", "\r\t",
                     System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            // Initial replacement target string for line breaks
            string breaks = "\r\r\r";
            // Initial replacement target string for tabs
            string tabs = "\t\t\t\t\t";
            for (int index = 0; index < result.Length; index++)
            {
                result = result.Replace(breaks, "\r\r");
                result = result.Replace(tabs, "\t\t\t\t");
                breaks = breaks + "\r";
                tabs = tabs + "\t";
            }

            // That's it.
            return result;
        }
        catch
        {
            MessageBox.Show("Error");
            return source;
        }
    }

问题是，某些字符串包含 HTML 颜色，例如：<#D80000>StackOverFlow 是一个不错的论坛

我想要做的是将 HTML 颜色转换为 HTML 颜色之后的文本的颜色，这意味着“StackOverFlow 是一个不错的论坛变成红色或颜色是什么（颜色总是 X）

PS：它在工具提示中......从数据库加载后我在做什么：

  string XZ = StripHTML(XZSecond);
  Invoke(new MethodInvoker(delegate { tp.SetToolTip(OMG[i], Name + "\r" + XZ.Replace("Text", "").Replace("Text", "")); }));

score 1 · Accepted Answer

据我了解您的问题，您只想将代码 #D80000 例如转换为Color. 采取此链接中的答案可能会为您提供答案。

using System.Windows.Media;    
Color color = (Color)ColorConverter.ConvertFromString("#FFDFD991");

作为索拉林的回答

或者

System.Drawing.Color col = System.Drawing.ColorTranslator.FromHtml("#FFCC66");
Color col = ColorConverter.ConvertFromString("#FFDFD991") as Color;

作为奥德的回答

score 0 · Accepted Answer

您可以使用System.Windows.Media.ColorConverter方法尝试将字符串转换为颜色。

参考示例帖子

将颜色转换为像 #XXXXXX 这样的字符串的最简单方法是 System.Windows.Media.Brush

将字符串转换为 Html 参考帖子

http://www.blackbeltcoder.com/Articles/strings/converting-text-to-html

看看它帮助更多

http://htmlagilitypack.codeplex.com/

c# - 文本到 HTML 转换

2 回答 2

Related

Reference