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Old 09-01-2013, 04:08 PM   #1
jeronymite
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Default Select folder or file via property grid

Is there (or has anyone developed) a way to have a property that is a folder name or file name that can be chosen from the property grid by invoking the folder or file chooser dialog?

For example, on the grid, I select a property called, say, "Folder for trade records" and it pops up the folder chooser dialog.

Thanks for any assistance.
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Old 09-01-2013, 10:44 PM   #2
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Quote:
Originally Posted by jeronymite View Post
Is there (or has anyone developed) a way to have a property that is a folder name or file name that can be chosen from the property grid by invoking the folder or file chooser dialog?

For example, on the grid, I select a property called, say, "Folder for trade records" and it pops up the folder chooser dialog.

Thanks for any assistance.
Read this entire thread: the answer is in there. It is not a matter of what the thread is called: it is what it contains.

ref: http://www.ninjatrader.com/support/f...d.php?p=243127
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Old 09-01-2013, 10:55 PM   #3
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Hello jeronymite,

Thank you for your post.

koganam provide a link to a thread in which this it was discussed, you can find his code example on this item at the following link: http://www.ninjatrader.com/support/f...40&postcount=9

This is outside the bounds of NinjaScript but is something that is possible through C# programming which NinjaScript is based on.
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Old 09-07-2013, 11:36 PM   #4
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Many thanks, koganam!

The revealing of hitherto undiscovered functionality is always exciting.

I have implemented the code as follows:
private string SaveFilename ;

[Description("File to save"]
[GridCategory("Parameters (File Information)")]
[Gui.Design.DisplayName ("Name of old File")]
[EditorAttribute(typeof(System.Windows.Forms.Design .FileNameEditor), typeof(System.Drawing.Design.UITypeEditor))]
public string _SaveFilename
{
get { return SaveFilename ; }
set { SaveFilename = value ; }
}
I have added a reference to:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\ System.Design.dll
I note that the version of .NET is v4.5, but the file is there, so I chose the latest version of .NET. The strategy compiles without issue.

When I add the strategy and edit the parameters, I do not see the relevant entry in the grid, although other parameters in the same grid area are there.

Despite that, I enable the strategy and then get a popup that says:
Failed to execute DB job 'StrategyUpdateJob': There was an error reflecting type 'NinjaTrader.Strategy.MyStrategy'.: AssemblyResolveEvent handlers cannot return Assemblies loaded for reflection only.
... where MyStrategy is the name of my strategy.

Any further advice most welcome!
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Old 09-08-2013, 07:40 AM   #5
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Quote:
Originally Posted by jeronymite View Post
Many thanks, koganam!

The revealing of hitherto undiscovered functionality is always exciting.

I have implemented the code as follows:
private string SaveFilename ;

[Description("File to save"]
[GridCategory("Parameters (File Information)")]
[Gui.Design.DisplayName ("Name of old File")]
[EditorAttribute(typeof(System.Windows.Forms.Design .FileNameEditor), typeof(System.Drawing.Design.UITypeEditor))]
public string _SaveFilename
{
get { return SaveFilename ; }
set { SaveFilename = value ; }
}
I have added a reference to:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5\ System.Design.dll
I note that the version of .NET is v4.5, but the file is there, so I chose the latest version of .NET. The strategy compiles without issue.

When I add the strategy and edit the parameters, I do not see the relevant entry in the grid, although other parameters in the same grid area are there.

Despite that, I enable the strategy and then get a popup that says:
Failed to execute DB job 'StrategyUpdateJob': There was an error reflecting type 'NinjaTrader.Strategy.MyStrategy'.: AssemblyResolveEvent handlers cannot return Assemblies loaded for reflection only.
... where MyStrategy is the name of my strategy.

Any further advice most welcome!
In the same thread is this post: www.ninjatrader.com/support/forum/showthread.php?p=243649

You must use the correct .NET versioon.

This statement is directly in the description notes in the code posted.
Quote:
/// Demo of how to create a FileSelection Dialog Box in properties. You must reference System.Design.dll from Microsoft.NET 2.0, or it will not compile.
Last edited by koganam; 09-08-2013 at 07:43 AM.
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Old 09-08-2013, 09:39 AM   #6
jeronymite
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Thanks again, koganam.

I installed .NET Framework 2.0 and changed the reference and it works as documented.

It was indeed my mistake in thinking I could use the same dll from the most recent .Net Framework release.
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