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Dynamic Properties
Updated: Views / Replies:7,752 / 23
Created: by baruchs Attachments:4

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Dynamic Properties

  #21 (permalink)
Elite Member
Heidelberg, Germany
 
Futures Experience: Intermediate
Platform: NinjaTrader
Favorite Futures: Stocks
 
Posts: 11 since Jun 2014
Thanks: 6 given, 12 received

Succeeded in updating the description as well. As a final step have gathered all the code into cut-and-paste sections with three utility methods for deleting a property, updating the name and updating the description. From the (attached!) example:

 
Code
private void ModifyProperties(PropertyDescriptor[] properties)
{
  if (deleteAnotherProperty)
    DeleteProperty(properties, "DeletePropertyIfTrue");

  UpdateDisplayName(properties, "PropertyWithChangedName", "Property NEW Name");
			
  UpdateDescription(properties, "PropertyWithUpdatedDescription", "New property description.");
}
All the relevant code is boiler plate sections that can just be copied into a strategy. Commented to explain what everything does.

Caveat emptor: code tested, but I am not C# expert galore, it could be that I overlooked something somewhere.
But for now it works beautifully.

In the attached strategy is the complete example, with all of the code ready for cut and paste.

Attached Thumbnails
Dynamic Properties-exampledynamicproperties.jpg  
Attached Files
Register to download File Type: zip ExampleDynamicProperties.zip (3.2 KB, 65 views)
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The following 3 users say Thank You to zr6bcm for this post:
 
  #22 (permalink)
Elite Member
Barcelona
 
Futures Experience: Beginner
Platform: NinjaTrader 7
Favorite Futures: CL, TF
 
grankus's Avatar
 
Posts: 8 since Aug 2012
Thanks: 5 given, 0 received

Thank you very much for all zr6bcm!

I think it's crystal clear now. I really appreciate your effort and thanks for the attached file with all the annotations.

Jairo.

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  #23 (permalink)
Elite Member
Fukuoka-shi, Fukuoka-ken, Japan
 
Futures Experience: None
Platform: NinjaTrader
Favorite Futures: Futures
 
Posts: 46 since Sep 2013
Thanks: 43 given, 20 received


I've been trying to implement this type of code in my strategy, but I've been trying to base it off the code found in this NinjaWorkShop strategy. It seems to be based off of the code in this thread by @jeremytang and @zr6bcm, but it is able to dynamically remove properties without cluttering the properties section with many additional 'trigger' properties. The actual strategy is quite complex as far as NT strategies go, so if someone could make a simple sample code for how this works I would really appreciate it.

For those interested, the strategy was found on the ninjatrader website here.

For a simple and a practical context, I think the sample should include a dropdown menu enabling an EMA crossover strategy, a MACD cross strategy, or both.

In this case the variables would be ema fast, ema slow, macdfast, macdslow, and macd smooth.

and should look something like this:

 
Code
if ema cross is enabled then remove macdfast, macdslow, and macd smooth
if macd cross is enabled them remove ema fast and ema slow
if ema cross and macd is enabled then remove none

Attached Files
Register to download File Type: zip NinjaWorkShop1.0.zip (49.2 KB, 11 views)
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  #24 (permalink)
Elite Member
Fukuoka-shi, Fukuoka-ken, Japan
 
Futures Experience: None
Platform: NinjaTrader
Favorite Futures: Futures
 
Posts: 46 since Sep 2013
Thanks: 43 given, 20 received

I've found the answer to my own question. I did not add the ICustomTypeDescriptor class! After many hours of looking it over and retyping everything multiple times, it all came down to this. So if you're looking to add this to your strategy be sure to change this:
 
Code
public class ShortTermPullback : Strategy

to this:
 
Code
public class ShortTermPullback : Strategy, ICustomTypeDescriptor

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