using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"<div\sclass=\""sg-text\"">(.*?)<\/div>";
string input = @"<div class=""brn-answer__content sg-content-box__content"">
<div class=""sg-content-box sg-content-box--spaced-bottom"">
<div class=""brn-answer__text"">
<div class=""sg-text"">
Тут немного текста
</div>
</div>
<div class=""brn-attachments brn-attachments--spaced-top"">
<a href=""https://site.ru/files/de1/b96e8076bba5b1c3bbd39a53d301c8a5.jpg"" class=""brn-attachments__attachment"" target=""_blank"">
<div class=""sg-box sg-box--image-wrapper "">
<img class=""sg-box__image"" src=""https://site.ru/files/de1/b96e8076bba5b1c3bbd39a53d301c8a5.jpg"" title=""Photo"" alt="">
</div>";
RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.Singleline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
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