c# wcf file and folder browser-Collection of common programming errors

I have a windows service that host a wcf service to allow remot file and folder browsing. The windows service runs under the local system account.

When browsing the c:\ drive the service reports over 2800 files in that folder. i have single stepped through the code and it does indeed report >2800 files.

How can this be correct?

C# Code

   //Files Manager

public ReturnClass FindSubFiles(String Folder_To_Search, String User, String SessionId)
{
    ReturnClass myReturnClass = new ReturnClass(-1, String.Empty, String.Empty, null, null, null, null);
    try
    {
        Logging.Write_To_Log_File("Entry", MethodBase.GetCurrentMethod().Name, "", "", "", "", User, SessionId, 1);
        string[] filePaths = Directory.GetFiles(Folder_To_Search);
        int count = 0;
        foreach (string Folder in filePaths)
        {
            filePaths[count] = Path.GetFileName(filePaths[count]);

            count++;
        }
        myReturnClass.ErrorCode = 1;
        myReturnClass.FilePaths = filePaths;
        Logging.Write_To_Log_File("Exit", MethodBase.GetCurrentMethod().Name, "", "", "", "", User, SessionId, 1);
        return myReturnClass;
    }
    catch (Exception ex) 
    {
        Logging.Write_To_Log_File("Error", MethodBase.GetCurrentMethod().Name, "", "", ex.ToString(), "", User, SessionId, 2);
        myReturnClass.ErrorCode = -1;
        myReturnClass.ErrorMessage = ex.ToString();
        return myReturnClass;
    }
}

the path i was passing in was c: what i should be passing in is c:\\

C# Code

public ReturnClass FindSubFiles(String Folder_To_Search , 
                                String User, String SessionId )
{
    ReturnClass myReturnClass = new ReturnClass(-1, String.Empty, String.Empty, 
                                               null, null, null, null);
    try
    {
        Logging.Write_To_Log_File("Entry", MethodBase.GetCurrentMethod().Name, 
                                  "", "", "", "", User, SessionId, 1);
        string[] filePaths = Directory.GetFiles(Folder_To_Search + "\\");
        int count = 0;
        foreach (string Folder in filePaths)
        {
            filePaths[count] = Path.GetFileName(filePaths[count]);

            count++;
        }
        myReturnClass.ErrorCode = 1;
        myReturnClass.FilePaths = filePaths;
        Logging.Write_To_Log_File("Exit", MethodBase.GetCurrentMethod().Name, 
                                  "", "", "", "", User, SessionId, 1);
        return myReturnClass;
    }
    catch (Exception ex) 
    {
        Logging.Write_To_Log_File("Error", MethodBase.GetCurrentMethod().Name, 
                                  "", "", ex.ToString(), "", User, SessionId, 2);
        myReturnClass.ErrorCode = -1;
        myReturnClass.ErrorMessage = ex.ToString();
        return myReturnClass;
    }
}

thanks Damo