using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"([\s\""'](?:src|srcset)\s*=)\s*([\""'])(?!\s*\b(?:(?:bres|https?|ftp)://|(?:data|javascript):))(?:file://)?[\x00-\x1f\x7f]*\.*/?([^\"">]+)\2";
string substitution = @"$1$2bres://dictid/$3$2";
string input = @"<img src=""us.png"" srcset=""us.png 1x, us-2x.png 2x"">
<img src=""us.png"" srcset=""us-2x.png 2x"">";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx