Running code when a strategy is shut down by the user

[bboyle1234]

Hi, I would like to run some code when the custom strategy is shut down by the user.

• Strategy is removed from chart
• Connection is lost
• etc

What's the best way to catch this occurrence?
Thank you!!
Ben

[NinjaTrader_JoshP]

Ben,

Please see the OnConnectionStatus() method. If you remove a strategy there is no more processing of any logic.

[bboyle1234]

Thanks Josh,
I had noticed that method, which will certainly work when the user disconnects the strategy, or the connection fails.
Will it also help when the user manually removes the strategy from the chart?
cheers / Ben

[bboyle1234]

It's not that I want to do any more trading logic at this time ... I want to shut down another thread that I have running ... a user's control panel inheriting from System.Windows.Form.

When the strategy closes, the form stays open, and I want to catch the strategy closing so I can close the form.

cheers / Ben

[NinjaTrader_JoshP]

No. If you wanted to halt your strategy see this reference sample: http://www.ninjatrader-support2.com/...ead.php?t=4804

It does not remove the strategy. It just negates all logic.

[NinjaTrader_JoshP]

What you want is not supported.

[bboyle1234]

ok, thanks anyway ...

I am currently making the controlpanel check with the strategy to see if the strategy has received any market data within the last few seconds. If not, then the control panel assumes the strategy is no longer active, and hides itself from view ... not the best solution.

I tried putting some code in the strategy destructor method, but it never seemed to run

[Ralph]

Josh, not supported doesn't mean not working in this case am I correct? With the Dispose() methode it is possible to free resources reliable. I use it to remove the extension I appended to the chart's context menu and that never failed.

bboyle1234, the destructor is a very unsave place to free resources, that is different compared with standard-C. It is because the purpose of the destructor in C# is a different compared with C.

Regards
Ralph

[NinjaTrader_JoshP]

It means this is well beyond the level of support we can offer. We can help with NinjaScript, but you guys are trying to do things with external apps and such. Unfortunately we just don't have the bandwidth to be able to extend our support out there and you will be on your own for this endeavour.

[Ralph]

Ok Josh.

bboyle1234, I use the following code with an indicator, but should work the same with a strategy. I use the additional flag, because Dispose() is called twice some time.

Regards
Ralph

[FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]public [/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]override [/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]void[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2] Dispose()[/SIZE][/FONT]
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[SIZE=2][FONT=Courier New][SIZE=2][FONT=Courier New]    disposalDone = [/FONT][/SIZE][/FONT][/SIZE][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]true[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2];[/SIZE][/FONT]
[SIZE=2][FONT=Courier New]  }[/FONT][/SIZE]
[/SIZE][/FONT][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff][FONT=Courier New][SIZE=2][COLOR=#0000ff]  base[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][FONT=Courier New][SIZE=2][FONT=Courier New][SIZE=2].Dispose();[/SIZE][/FONT]
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[NinjaTrader_Dierk]

Guys, as Josh pointed out there are limitations of what NT can provide to you at this time. We understand your request since it's very reasonable. Therefore NT7 comes with a new concept which will meet your requirements.

Thanks for your patience and your understanding.

[bboyle1234]

Thanks everybody for your help.
Ralph, I feel a bit embarrassed to have been trying to use the destructor instead of the dispose method. Appreciate you pointing it out for me.
cheers / Ben