使用HtmlAgilitPack更改字体家族和字体大小 [英] Change Font Family and Font Size using HtmlAgilitPack

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问题描述

我需要将给定HTML的字体系列和字体大小更改为特定的字体系列和大小。（例如：Times New Romen，size：12）你知道如何使用HtmlAgilityPack来完成吗？

I need to change font family and font size of the given HTML to a specific font family and size. (Ex: Times New Romen, size: 12) Do you know how it could be done using HtmlAgilityPack?

在给定的html中可以用多种方式定义字体大小。例如：使用<字体大小=标签，< H3> ，也是样式标签。因此，我需要将所有字体改为特定的字体大小。

Font size can be defined in many ways in the given html. Ex: using , also Style tag. Therefore I need to change all to a specific font size.

以下是示例HTML代码：

Following is a Sample HTML Code:

<html><H3 style="MARGIN: 0in 0in 0pt 0.5in">1.1.1   Sample text1: The following code iterates through all the items in the ListBox and addsPictureBoxes dynamically to a FlowLayoutPanel using the image sources retrieved in the previous step.</H3> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /?> <H3 style="MARGIN: 0in 0in 0pt 0.5in">1.1.2   Sample text 2: The following code iterates through all the items in the ListBox and addsPictureBoxes dynamically to a FlowLayoutPanel using the image sources retrieved in the previous step.</H3> a.                       Sample text 3: The following code iterates through all the items in the ListBox and addsPictureBoxes dynamically to a FlowLayoutPanel using the image sources retrieved in the previous step. Sample Text 4: The following code iterates through all the items in the ListBox and addsPictureBoxes dynamically to a FlowLayoutPanel using the image sources retrieved in the previous step.</html>

推荐答案

我使用HtmlAgilityPack完成了这项工作。以下是我开发的代码。

I did this using HtmlAgilityPack. Following is the code I have developed.

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(inputHtml);
var elementsWithStyleAttribute = doc.DocumentNode.SelectNodes(string.Concat("//", tagName));

if (null == elementsWithStyleAttribute)
{
    return inputHtml;
}

foreach (var element in elementsWithStyleAttribute)
{
    var classElement = element.GetAttributeValue("class", null);

    if (!string.IsNullOrWhiteSpace(classElement))
    {
        // Remove class attribute.
        element.Attributes["class"].Remove();
    }

    var styles = element.GetAttributeValue("style", null);

    if (!string.IsNullOrWhiteSpace(styles)) //&& (styles.ToUpper().Contains("FONT-FAMILY:") || styles.ToUpper().Contains("FONT-SIZE:")))
    {
        element.Attributes["style"].Remove();

        string[] splitter = { ";" };
        string[] styleClasses = styles.Split(splitter, StringSplitOptions.None);

        StringBuilder sbStyles = new StringBuilder("font-family:Arial; font-size:10pt;");

        if (null != styleClasses && styleClasses.Length > 0)
        {
            foreach (var item in styleClasses)
            {
                if (!string.IsNullOrWhiteSpace(item) && !item.ToUpper().Contains("FONT-FAMILY:")
                    && !item.ToUpper().Contains("FONT-SIZE:") && !item.ToUpper().Contains("FONT:"))
                {
                    // Add existing styles except font size and font family styles.
                    sbStyles.Append(item.Trim());
                    sbStyles.Append(";");
                }
            }
        }

        element.SetAttributeValue("style", sbStyles.ToString());
    }
    else
    {
        element.SetAttributeValue("style", "font-family:Arial; font-size:10pt;");
    }
}

return doc.DocumentNode.InnerHtml;

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使用HtmlAgilitPack更改字体家族和字体大小 [英] Change Font Family and Font Size using HtmlAgilitPack

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使用HtmlAgilitPack更改字体家族和字体大小 [英] Change Font Family and Font Size using HtmlAgilitPack

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