public string DealHtml(string str)
{
//str = Regex.Replace(str, @"(img)[^]*|/(img)", "", RegexOptions.IgnoreCase);
str = Regex.Replace(str, @"(table|tbody|tr|td|th)[^]*|/(table|tbody|tr|td|th)", "", RegexOptions.IgnoreCase);
str = Regex.Replace(str, @"(div|blockquote|fieldset|legend)[^]*|/(div|blockquote|fieldset|legend)", "", RegexOptions.IgnoreCase);
（本文来源于图老师网站，更多请访问https://m.tulaoshi.com/webkaifa/）//str = Regex.Replace(str, @"(font|i|u|h[1-9]|s)[^]*|/(font|i|u|h[1-9]|s)", "", RegexOptions.IgnoreCase);
//str = Regex.Replace(str, @"(style|strong)[^]*|/(style|strong)", "", RegexOptions.IgnoreCase);
//str = Regex.Replace(str, @"a[^]*|/a", "", RegexOptions.IgnoreCase);
//str = Regex.Replace(str, @"(meta|iframe|frame|span|tbody|layer)[^]*|/(iframe|frame|meta|span|tbody|layer)", "", RegexOptions.IgnoreCase);
（本文来源于图老师网站，更多请访问https://m.tulaoshi.com/webkaifa/）str = Regex.Replace(str, @"br[^]*", "", RegexOptions.IgnoreCase);
str = str.Replace("br", "");
return str;
}
