Hi,

I get StackOverflow when I return  an InstanceDescriptor which represents a
constructor which takes it's own type as parameter. Could someone explain
why return new InstanceDescriptor(ci,new object[]{date}); causes
StackOverflow? Is it again going into the ConvertTo? Why?

Short code snippet:

if(destinationType == typeof(InstanceDescriptor))
  {
   ConstructorInfo ci = typeof(ExtendedDate).GetConstructor(new
Type[]{typeof(ExtendedDate)});
   ExtendedDate date = (ExtendedDate) value;
   return new InstanceDescriptor(ci,new object[]{date});
  }

Full sample code:

public class Component1 : System.ComponentModel.Component
{
public Component1(System.ComponentModel.IContainer container)
{
 container.Add(this);
}
public Component1(){}

private ExtendedDate _date;

public ExtendedDate ExtendedDate
{
 get { return _date;  }
 set { _date = value; }
}
bool ShouldSerializeExtendedDate()
{
 return true;
}
}

[TypeConverter(typeof(ExtendedDateTypeConverter))]
public class ExtendedDate
{
public ExtendedDate(ExtendedDate date)
{
}
}

internal sealed class ExtendedDateTypeConverter: TypeConverter
{
public override bool CanConvertTo(ITypeDescriptorContext context, Type
destinationType)
{
 if (destinationType == typeof(InstanceDescriptor))
  return true;
 return base.CanConvertTo(context, destinationType);
}
public override object ConvertTo(ITypeDescriptorContext context,
System.Globalization.CultureInfo culture, object value, Type
destinationType)
{
 if(value is ExtendedDate)
 {
  if(destinationType == typeof(string))
   return ((ExtendedDate)value).ToString();
  else if(destinationType == typeof(InstanceDescriptor))
  {
   ConstructorInfo ci = typeof(ExtendedDate).GetConstructor(new
Type[]{typeof(ExtendedDate)});
   ExtendedDate date = (ExtendedDate) value;
   return new InstanceDescriptor(ci,new object[]{date});
  }
 }
 return base.ConvertTo(context, culture, value, destinationType);
}
public override bool CanConvertFrom(ITypeDescriptorContext context, Type
sourceType)
{
 if(sourceType == typeof(string))
 {
  return true;
 }
 return base.CanConvertFrom (context, sourceType);
}
public override object ConvertFrom(ITypeDescriptorContext context,
System.Globalization.CultureInfo culture, object value)
{
 if(value is string)
 {
  return new ExtendedDate(null);
 }
 return base.ConvertFrom (context, culture, value);
}
}