Another PropertyGrid Question

[Frank Rizzo]

Hello,

I have the property grid control in my WinForm app. I have a property
where I implemented a simple drop-down editor via the TypeConverter.

I was wondering whether it is possible to add items to the dropdown
after the application has initially populated it? For instance,
consider the code below. In it, the ColorThemeManager exposes in the
dropdown the list of files with the .ColorTheme extention. At some
point, the another .ColorTheme file will be added and I want my
PropertyGrid control to reflect that. However, nothing I've done so far
(including resetting the PropertyGrid.SelectedObject has worked. Any
ideas or is this a lost cause?

//form code
ColorThemeManager oCtm = new ColorThemeManager()
this.myPropertyGrid.SelectedObject = oCtm;

//class code
class ColorThemeManager
{
[TypeConverter(typeof(ColorThemeConverter))]
[RefreshPropertiesAttribute(RefreshProperties.Repai nt)]
public string ColorTheme
{
get
{
return m_ColorTheme;
}
set
{
m_ColorTheme = value;
}
}
}
public class ColorThemeConverter: StringConverter
{
private static StandardValuesCollection themeList;

public ColorThemeConverter ()
{
string [] FileList = Directory.GetFiles(Application.StartupPath,
"*.ColorTheme");
themeList = new StandardValuesCollection(FileTitles);
}

public override bool GetStandardValuesSupported(ITypeDescriptorContext
context)
{
return true;
}
public override bool GetStandardValuesExclusive(ITypeDescriptorContext
context)
{
return false;
}
public override StandardValuesCollection
GetStandardValues(ITypeDescriptorContext context)
{
return themeList;
}
}