public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (value as TGIBlockListIndexCTD != null && destinationType.Equals(typeof(string)))
{
try
{
TGIBlockListIndexCTD ctd = (TGIBlockListIndexCTD)value;
string name = ctd.field.Split(' ').Length == 1 ? ctd.field : ctd.field.Split(new char[] { ' ' }, 2)[1].Trim();
return("" + ctd.owner[name]);
}
//catch { }
catch (Exception ex) { throw new NotSupportedException("Invalid data", ex); }
}
return(base.ConvertTo(context, culture, value, destinationType));
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (ui == null)
{
ui = new TGIBlockSelection();
}
TGIBlockListIndexCTD o = value as TGIBlockListIndexCTD;
ui.SetField(o.owner, o.field, o.tgiBlocks);
ui.EdSvc = edSvc;
edSvc.DropDownControl(ui);
// the ui (a) updates the value and (b) closes the dropdown
return(o.owner[o.field].Value);
}