using System;
using System.Text.RegularExpressions;
 
public class Test
{
public static void Main()
{
 
 
String input = @"sddkjasd""fhadslkfhdskljfahskjff""shkdfjhfkhafklj""NamespaceA.NamespaceB.NamespaceC.ClassnameA""swenbfjiwguzl""lgvfdu""eQVFZEIW""NamespaceA.NamespaceB.NamespaceC.ClassnameB""VDTZEvwqdtzevdzgi";
 
Regex rgx = new Regex(@"NamespaceA[^""]*?\.([^.""]*)""");
 
foreach (Match m in rgx.Matches(input))
Console.WriteLine(m.Groups[1].Value);
 
}
}

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