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if (File.Exists(currentPath_Project + "RT-Q.bin"))
        {
           IFormatter formatter = new BinaryFormatter();
           Stream serializationStream = new FileStream(currentPath_Project + "RT-Q.bin", FileMode.Open, FileAccess.Read, FileShare.Read);
           Router router = (Router)formatter.Deserialize(serializationStream);
           serializationStream.Close();

           using (StreamWriter writer = new StreamWriter(currentPath_Readed_Values_RT_Q + "RT-Q_bin_"))
           {
               string strCurrentValue = string.Empty;
               foreach (ISDEdifact.ikEintrag isde_difact_router in router.a)
               {
                   if (isde_diface_router != null)
                   {

                       strCurrentValue = isde_difact_router.ikDA_mit.ToString().Trim() + " <> ";
                       strCurrentValue += isde_difact_router.ikDA_ohne.ToString().Trim() + " <> ";
                                                                                   
                       writer.WriteLine(strCurrentValue);
                    }

               }

          } //Ending of Function Using

}					

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foreach (ISDEdifact.ikEintrag isde_difact_router in router.a)					

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ISDEdifact.ikEintrag