using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string SampleText = "starttexthere\r\nothertexthereendtexthere";
string RegexPattern = "(?<=starttexthere)[\\w\\r\\n]+(?=endtexthere)";
Regex FindRegex = new Regex(RegexPattern);
Match m = FindRegex.Match(SampleText);
Console.WriteLine(m.Value);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJICAgIHN0cmluZyBTYW1wbGVUZXh0ID0gInN0YXJ0dGV4dGhlcmVcclxub3RoZXJ0ZXh0aGVyZWVuZHRleHRoZXJlIjsKCQkJc3RyaW5nIFJlZ2V4UGF0dGVybiA9ICIoPzw9c3RhcnR0ZXh0aGVyZSlbXFx3XFxyXFxuXSsoPz1lbmR0ZXh0aGVyZSkiOwoJCQlSZWdleCBGaW5kUmVnZXggPSBuZXcgUmVnZXgoUmVnZXhQYXR0ZXJuKTsKCQkJTWF0Y2ggbSA9IEZpbmRSZWdleC5NYXRjaChTYW1wbGVUZXh0KTsKCgkJCUNvbnNvbGUuV3JpdGVMaW5lKG0uVmFsdWUpOwoJfQp9