C#正则提取Html中图片的宽和高|regex get image width and height

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在HTML代码中，img的写法大致如下：

<img src=”…” alt=”…” width=”…” height=”…” />

我们利用正则表达式来提取 width 和 height 的值：

string str = "<img src=\"/upload/1.jpg\" width=\"100\" height=\"80\">"; 
string pattern = "width\\s?=\\s?\"(\\d+)\"\\s+height\\s?=\\s?\"(\\d+)"; 
System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(pattern, System.Text.RegularExpressions.RegexOptions.IgnoreCase); 
System.Text.RegularExpressions.Match m = regex.Match(str); 

if (m.Success) 
{ 
    string width = m.Groups[1].Value; //宽 
    string height = m.Groups[2].Value; //高 
} 

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