The type or namespace name 'SoundConverter' does not exist in the namespace

[PaulMohn]

I'm getting this Log Tab error when trying to export an indicator:

Error compiling export assembly : error CS0234: The type or namespace name 'SoundConverter' does not exist in the namespace 'NinjaTrader.NinjaScript.Indicators' (are you missing an assembly reference?)

I added this class with a custom name (SoundConverter_HammerCandlesticks) to the indicator:

        // using System.IO; https://forum.ninjatrader.com/forum/ninjatrader-8/indicator-development/1172753-sound-files-dropdown-picker?p=1172766#post1172766
        public class SoundConverter_HammerCandlesticks : TypeConverter
        {

            public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
            {
                if (context == null)
                {
                    return null;
                }
                //List <string> list;
                List <string> list = new List <string> ();

                DirectoryInfo dir = new DirectoryInfo(NinjaTrader.Core.Globals.InstallDir+ "sounds");

                FileInfo[] files= dir.GetFiles("*.wav");

                foreach (FileInfo file in files)
                {
                    list.Add(file.Name);
                }

                return new TypeConverter.StandardValuesCollection(list);
            }

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

I have this reference in the properties section:

                [NinjaScriptProperty]
                [Display(Name="Inverted Hammer Sound", Order=2, GroupName="01. Select Sound")]
                [TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter))]
                public string SoundFilesIHBrush
                {get;set;}​

I also have the same class with the original name in another indicator.

I also have it in other indicators with other custom class names and those also do throw the same error when trying exporting them.

I add the class to each indicator requiring it so as not to need looking for it years later.

How can this indicator be exported without the compile error problem?

[bltdavid]

I added this class with a custom name (SoundConverter_HammerCandlesticks) to the indicator:

I have this reference in the properties section:

[NinjaScriptProperty]
[Display(Name="Inverted Hammer Sound", Order=2, GroupName="01. Select Sound")]
[TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter))]
public string SoundFilesIHBrush
{get;set;}​

Well, for starters, shouldn't this line,

[TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter))]

actually be this?

[TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter_HammerCandlesticks))]

[bltdavid]

I added this class with a custom name (SoundConverter_HammerCandlesticks) to the indicator:

How can this indicator be exported without the compile error problem?

Not sure you are aware, but there is a new NinjaTrader 8 standard way
of doing this -- no longer do you need the TypeConverter code you're
trying to fix.

The new way is summarized as the FilePathPicker way.

To get a dropdown in the property grid that returns the user's selected
sound file, all you need is 2 lines of code,

[PropertyEditor("NinjaTrader.Gui.Tools.FilePathPicker", Filter="WAV Files (*.wav)|*.wav")]
public string AlertSoundFile { get; set; }

Study the indicator file @TrendLines.cs, which uses this technique.

Just my 2˘.

[PaulMohn]

Well, for starters, shouldn't this line,

[TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter))]

actually be this?

[TypeConverter(typeof(NinjaTrader.NinjaScript.Indicators.SoundConverter_HammerCandlesticks))]

Just what was needed. Thanks a lot bltdavid !

I thought I tested it but then realized I only did to one of the these and doing it to all fixed it.

[PaulMohn]

Not sure you are aware, but there is a new NinjaTrader 8 standard way
of doing this -- no longer do you need the TypeConverter code you're
trying to fix.

The new way is summarized as the FilePathPicker way.

To get a dropdown in the property grid that returns the user's selected
sound file, all you need is 2 lines of code,

[PropertyEditor("NinjaTrader.Gui.Tools.FilePathPicker", Filter="WAV Files (*.wav)|*.wav")]
public string AlertSoundFile { get; set; }

Study the indicator file @TrendLines.cs, which uses this technique.

Just my 2˘.

Thanks for that reference. I'll test it asap!