dropdown list of ATM Strategy

[ballboy11]

I want to have a dropdownlist of the ATM Strategies in my strategy. How is the typeconverter implemented. I tried different ways i don't know how to make a drop down list for the strategies

[NinjaTrader_ChelseaB]

Hello ballboy11,

This would be outside of what is supported by NinjaTrader Support.

That said, I looked around and found some internal conversation within the company that was not publicly posted on the forums you may find helpful.

public class FriendlyAtmConverter : TypeConverter
{  
    // Set the values to appear in the combo box
    public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
    {
        List<string> values = new List<string>();
        string[] files = System.IO.Directory.GetFiles(System.IO.Path.Combine(NinjaTrader.Core.Globals.UserDataDir, "templates", "AtmStrategy"), "*.xml");  
 
        foreach(string atm in files)
        {
            values.Add(System.IO.Path.GetFileNameWithoutExtension(atm));
            NinjaTrader.Code.Output.Process(System.IO.Path.GetFileNameWithoutExtension(atm), PrintTo.OutputTab1);
        }
        return new StandardValuesCollection(values);
    }
 
    public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
    {
        return value.ToString();
    }
 
    public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
    {
        return value;
    }
 
    // required interface members needed to compile
    public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
    { return true; }
 
    public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
    { return true; }
 
    public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
    { return true; }
 
    public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
    { return true; }
}

[TypeConverter(typeof(FriendlyAtmConverter))] // Converts the found ATM template file names to string values
[PropertyEditor("NinjaTrader.Gui.Tools.StringStandardValuesEditorKey")] // Create the combo box on the property grid
[Display(Name = "Atm Strategy", Order = 1, GroupName = "AtmStrategy")]
public string AtmStrategy
{ get; set; }

[ballboy11]

I will look at my drop down list

[ballboy11]

//This is in my parameters

[TypeConverter(typeof(FriendlyAtmConverter))] // Converts the found ATM template file names to string values
[PropertyEditor("NinjaTrader.Gui.Tools.StringStanda rdValuesEditorKey")] // Create the combo box on the property grid
[Display(Name = "Atm Strategy", Order = 1, GroupName = "AtmStrategy")]
public string AtmStrategy
{ get; set; }




public class YourStrategyName : Strategy // Dont add this
{

// Place this Section under your strategy name
public class FriendlyAtmConverter : TypeConverter
{
// Set the values to appear in the combo box
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
List<string> values = new List<string>();
string[] files = System.IO.Directory.GetFiles(System.IO.Path.Combin e(NinjaTrader.Core.Globals.UserDataDir, "templates", "AtmStrategy"), "*.xml");

foreach (string atm in files)
{
values.Add(System.IO.Path.GetFileNameWithoutExtens ion(atm));
// NinjaTrader.Code.Output.Process(System.IO.Path.Get FileNameWithoutExtension(atm), PrintTo.OutputTab1);
}
return new StandardValuesCollection(values);
}

public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
return value.ToString();
}

public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
return value;
}

// required interface members needed to compile
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{ return true; }

public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{ return true; }

public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{ return true; }

public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{ return true; }
}


This will work for your strategy template parameters

[Unsuitable]

Hello,

I was linked to this thread for a similar question. As this relates to dropdowns and enums, checkout this thread for dropdowns based on special characters. Perhaps somebody will find it useful. It's always good to cross-pollinate code solutions.

Dropdowns based on special characters