I know this is an older thread. I also know I'm asking a question instead of leaving an answer, but I don't know any other way to get advice for a similar question without asking a duplicate question.

I have a dynamic solution created with VBScript that's similar to Darren's first solution. My users typically have two or more IBM Personal Communications (PCOMM) sessions open on their Desktop to do their daily tasks. Some of those sessions are logged into business proprietary applications and need to be left alone. They also can't use their "A" session as that's their production session. To handle this, I've developed this logic:

Set Connect_Manager = CreateObject("pcomm.autECLConnMgr")
Set autECLConnList = CreateObject("PCOMM.autECLConnList")
Set ObjEmulator = CreateObject("pcomm.auteclsession")

autECLConnList.Refresh
Num = autECLConnList.Count
PrevNum = Num

If Num = 0 Then
   MsgBox "You must have at least two PCOMM sessions open to use this tool." & vbnewline & vbnewline &  "Program is now terminating.", vbOKOnly + vbExclamation + vbSystemModal, "No Session Error"
   SetEverythingToNothing
   WScript.Echo "EXIT"
   WScript.Quit
End If

strSession = autECLConnList(Num).Name
Connect_Manager.autECLConnList.Refresh

ObjEmulator.SetConnectionByName (strSession)
Window_Title = ObjEmulator.autECLWinMetrics.WindowTitle

If InStr(Window_Title, "HOSTORS") <> 0 Or strSession = "A" Or InStr(Window_Title, "NDB") <> 0 Then
   Set ObjEmulator = Nothing
   Loop_Count = 1
   Do
      ResEmulator = "No"
      PrevNum = PrevNum - 1
      If PrevNum = 0 Then
         MsgBox "You need to have more than one session open." & vbnewline & "Program is now terminating.", vbOKOnly + vbExclamation + vbSystemModal, "One Session Error"
         SetEverythingToNothing
         WScript.Echo "EXIT"
         WScript.Quit
      Else
         strSession = autECLConnList(PrevNum).Name
         If strSession = "A" Then
            MsgBox "You cannot use your production (A) session." & vbnewline & "Please open another session." & vbnewline & "Program is now terminating.", vbOKOnly + vbExclamation + vbSystemModal, "Production Session Error"
            SetEverythingToNothing
            WScript.Echo "EXIT"
            WScript.Quit
            Exit Do
         Else
            Set ObjEmulator = CreateObject("pcomm.auteclsession")
            Connect_Manager.autECLConnList.Refresh
            ObjEmulator.SetConnectionByName (strSession)
            Window_Title = ObjEmulator.autECLWinMetrics.WindowTitle
            If InStr(Window_Title, "NDB") <> 0 Or InStr(Window_Title, "HOSTORS") <> 0 Then
               Set ObjEmulator = Nothing
            Else
               ResEmulator = "Yes"
            End If
         End If
      End If
      Loop_Count = Loop_Count + 1
      If Loop_Count = 10 Then
         MsgBox "Unable to connect to a session." & vbnewline & "Please make sure you have working sessions." & vbnewline & "Program is now terminating.", vbOKOnly + vbExclamation + vbSystemModal, "Production Session Error"
         SetEverythingToNothing
         WScript.Echo "EXIT"
         WScript.Quit
         Exit Do
      End If
   Loop Until ResEmulator = "Yes"
End If

My department is moving away from VBScript and towards C#.NET. I've created a VERY similar version of the VBScript code.

AutConnList autECLConnList = new AutConnList();
AutConnMgr Connect_Manager = new AutConnMgr();
AutSess ObjEmulator = new AutSess();
       
autECLConnList.Refresh();
int Num = autECLConnList.Count;
int PrevNum = Num;

if (Num == 0)
{
    MessageBox.Show("You must have at least two PCOMM sessions open to use this tool." + Environment.NewLine + Environment.NewLine + "Program is now terminating.", "No Session Error", MessageBoxButtons.OK, 
    MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1, 
    MessageBoxOptions.DefaultDesktopOnly);
    return;
}

string strSession = autECLConnList[Num].Name;
autECLConnList.Refresh();

ObjEmulator.SetConnectionByName(strSession);
string Window_Title = ObjEmulator.autECLWinMetrics.WindowTitle;


if (Window_Title.IndexOf("HOSTORS") == 0 || strSession == "A" || Window_Title.IndexOf("NDB") == 0)
{
    ObjEmulator = null;
    int Loop_Count = 1;
    string ResEmulator = "No";
    do
    {
        PrevNum -= 1;
        if (PrevNum == 0)
        {
            MessageBox.Show("You need to have more than one session open." + Environment.NewLine + "Program is now terminating.", "One Session Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
            return;
        }
        else
        {
            strSession = autECLConnList[PrevNum].Name;
            if (strSession == "A")
            {
                MessageBox.Show("You cannot use your production (A) session." + Environment.NewLine + "Please open another session." + Environment.NewLine + "Program is now terminating.", "Production Session Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
                return;
            }
            else
            {
                AutSess ObjEmulator = new AutSess();
                autECLConnList.Refresh();
                ObjEmulator.SetConnectionByName(strSession);
                Window_Title = ObjEmulator.autECLWinMetrics.WindowTitle;
                if (Window_Title.IndexOf("HOSTORS") > 0 || Window_Title.IndexOf("NDB") > 0)
                {
                    ObjEmulator = null;
                }
                else
                {
                    ResEmulator = "Yes";
                }
            }
        } 
        Loop_Count++;
        if (Loop_Count == 10)
        {
            MessageBox.Show("Unable to connect to a session." + Environment.NewLine + "Please make sure you have working sessions." + Environment.NewLine + "Program is now terminating.", "Production Session Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
            return;
        }
    } while (ResEmulator == "Yes");
}

My issue is I'm getting the CS0136 - A local or parameter named 'ObjEmulator' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter when I'm trying to redeclare AutSess ObjEmulator = new AutSess();. I'm looking for a similar way to keep this dynamic like the VBScript code. Since ObjEmulator = null; doesn't fully kill the object in C#.NET like Set ObjEmulator = Nothing does in VBScript, does anyone have advice on how this can be done?