public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (value as EnumChooserCTD != null && destinationType.Equals(typeof(string)))
{
try
{
EnumChooserCTD ctd = (EnumChooserCTD)value;
TypedValue tv = (TypedValue)AApiVersionedFieldsCTD.GetFieldValue(ctd.owner, ctd.field);
return("" + AApiVersionedFieldsCTD.GetFieldValue(ctd.owner, ctd.field));
}
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));
EnumChooserCTD ctd = (EnumChooserCTD)value;
TypedValue tv = AApiVersionedFieldsCTD.GetFieldValue(ctd.owner, ctd.field);
List <string> enumValues = new List <string>();
int index = -1;
int i = 0;
foreach (Enum e in Enum.GetValues(tv.Type))
{
if (e.Equals((Enum)tv.Value))
{
index = i;
}
enumValues.Add(new TypedValue(e.GetType(), e, "X"));
i++;
}
int maxWidth = Application.OpenForms[0].Width / 3;
if (maxWidth < Screen.PrimaryScreen.WorkingArea.Size.Width / 4)
{
maxWidth = Screen.PrimaryScreen.WorkingArea.Size.Width / 4;
}
int maxHeight = Application.OpenForms[0].Height / 3;
if (maxHeight < Screen.PrimaryScreen.WorkingArea.Size.Height / 4)
{
maxHeight = Screen.PrimaryScreen.WorkingArea.Size.Height / 4;
}
TextBox tb = new TextBox
{
AutoSize = true,
Font = new ListBox().Font,
Margin = new Padding(0),
MaximumSize = new System.Drawing.Size(maxWidth, maxHeight),
Multiline = true,
Lines = enumValues.ToArray(),
};
tb.PerformLayout();
ListBox lb = new ListBox()
{
IntegralHeight = false,
Margin = new Padding(0),
Size = tb.PreferredSize,
Tag = edSvc,
};
lb.Items.AddRange(enumValues.ToArray());
lb.PerformLayout();
if (index >= 0)
{
lb.SelectedIndices.Add(index);
}
lb.SelectedIndexChanged += new EventHandler(lb_SelectedIndexChanged);
edSvc.DropDownControl(lb);
return(lb.SelectedItem == null ? value : (Enum) new EnumChooserConverter().ConvertFrom(context, System.Globalization.CultureInfo.CurrentCulture, lb.SelectedItem));
}
