Run the command immediately after creation of the control

Hello,
I want to run to hanlde user's action the following way:

1. Create a new tab
2. Add terminalcontrol
3. Connect by SSH to remote host
4. Run several commands (user must see them)

this.SetDataProcessingMode(DataProcessingMode.None);
this.Scripting.Send(cmd);
this.SetDataProcessingMode(DataProcessingMode.Automatic);

How to do it properly? If I try to run the command after creation, I get the following exception "Unable to stop background data processing.