How to allow user to enter/edit parameter as currency

[bernie_c]

I would like to allow the user of my strategy to enter/edit a parameter that is a currency. For example, lets say the following were displayed in my parameters list:
MaxDailyLoss $000.00
If 400 (with or without $) were typed and tab or return key pressed $400.00 would be displayed and a double variable in my code would be filled with 400.00. I can think of several ways this could be done. Just looking for the best or NT friendly way.

[koganam]

I would like to allow the user of my strategy to enter/edit a parameter that is a currency. For example, lets say the following were displayed in my parameters list:
MaxDailyLoss $000.00
If 400 (with or without $) were typed and tab or return key pressed $400.00 would be displayed and a double variable in my code would be filled with 400.00. I can think of several ways this could be done. Just looking for the best or NT friendly way.

Parse a string into a double, but display the Property as the string?

[NinjaTrader_Jesse]

Hello,

Thank you for the question.

If you absolutely need the $ in the field where you type the value, I would agree with koganam on parsing a string into a double.

Otherwise another solution would be to put the $ in the parameter name, here is a simple example parameter:

private double maxDailyLoss;
		
[Description("")]
[GridCategory("Parameters")]
[Gui.Design.DisplayName("MaxDailyLoss $")]
public double MaxDailyLoss
{
	get{ return maxDailyLoss;} set{ Math.Max(1, value);}
}

I look forward to being of further assistance.

[bernie_c]

Koganam,
This code snippet is what I tried before starting this thread. I was certain it would work, however, the quoted exception is thrown. Is this what you meant by "parse"?

[Description( "" )]
[GridCategory("c Parameters")]
[Gui.Design.DisplayName ("       Dollars")]
public string Dollar_str
{
    get { return dollar_str; }
    set { 			
                     dollar_num   = Double.Parse( value );
		     dollar_str	= dollar_num.ToString(); 
	  }	
}

**NT** Error on getting/setting property 'Dollar_str' for strategy 'bcSm/296c35a0a40e426db1b2c74ab9323fb0': Exception has been thrown by the target of an invocation.

[koganam]

Koganam,
This code snippet is what I tried before starting this thread. I was certain it would work, however, the quoted exception is thrown. Is this what you meant by "parse"?

[Description( "" )]
[GridCategory("c Parameters")]
[Gui.Design.DisplayName ("       Dollars")]
public string Dollar_str
{
    get { return dollar_str; }
    set { 			
                     dollar_num   = Double.Parse( value );
		     dollar_str	= dollar_num.ToString(); 
	  }	
}

That depends on whether the currency symbol is a part of your string. In which case, you have to specify "NumberStyles".

[bernie_c]

Here is what worked:

get { return dollar_str; }
set { 			
	dollar_num = Double.Parse( value, NumberStyles.Number | NumberStyles.AllowCurrencySymbol );
				
	dollar_str	 = dollar_num.ToString( "C", new System.Globalization.CultureInfo("en-US") );
       }

I had tried using NumberStyles earlier, but was getting compile errors because my using statements were not right. All is good now though.

Thanks again Koganam.