C# HTML 字符串 -> 获取没有 html 的长度

Question

我有带有 HTML 图像的字符串，例如:

string str = "There is some nice <img alt='img1' src='img/img1.png' /> images in this <img alt='img2' src='img/img2.png' /> string. I would like to ask you <img alt='img3' src='img/img3.png' /> how Can I can I get the Lenght of the string?";

我想得到没有图像的字符串的长度和图像的数量。所以，结果应该是:

int strLenght = 111;
int imagesCount= 3;

能告诉我最有效的方法吗？

谢谢

Answer 1

我建议使用真正的 HTML 解析器，例如 HtmlAgilityPack .那么就简单了:

string html = "There is some nice <img alt='img1' src='img/img1.png' /> images in this <img alt='img2' src='img/img2.png' /> string. I would like to ask you <img alt='img3' src='img/img3.png' /> how Can I can I get the Lenght of the string?";

var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);
int length = doc.DocumentNode.InnerText.Length;               // 114
int imageCount = doc.DocumentNode.Descendants("img").Count(); // 3

这是 DocumentNode.InnerText 在您的示例中返回的内容，您跳过了一些空格:

There is some nice  images in this  string. I would like to ask you  how Can I can I get the Lenght of the string?