private void finishSelection()
{
if (SelectedIndex >= 0)
{
MadeSelection = true;
Selection = Items[SelectedIndex] as NameTypePair;
}
_service.CloseDropDown();
}
public ValueList(IWindowsFormsEditorService service, NameTypePair[] values, NameTypePair v)
{
_service = service;
if (values != null && values.Length > 0)
{
Items.AddRange(values);
if (v != null && !string.IsNullOrEmpty(v.Name))
{
for (int i = 0; i < Items.Count; i++)
{
NameTypePair n = Items[i] as NameTypePair;
if (string.Compare(v.Name, n.Name, StringComparison.OrdinalIgnoreCase) == 0)
{
this.SelectedIndex = i;
break;
}
}
}
}
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (context != null && context.Instance != null && provider != null)
{
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc != null)
{
IDataSetSourceHolder vep = context.Instance as IDataSetSourceHolder;
if (vep != null)
{
IDataSetSource dss = vep.GetDataSource();
if (dss != null)
{
bool nameOnly = false;
if (context.PropertyDescriptor.Attributes != null)
{
foreach (Attribute a in context.PropertyDescriptor.Attributes)
{
if (a is FieldNameOnlyAttribute)
{
nameOnly = true;
break;
}
}
}
NameTypePair v;
if (nameOnly)
{
string s = value as string;
if (string.IsNullOrEmpty(s))
{
v = null;
}
else
{
v = new NameTypePair(s, typeof(string));
}
}
else
{
v = value as NameTypePair;
}
NameTypePair[] fields = dss.GetFields();
if (fields != null && fields.Length > 0)
{
ValueList list = new ValueList(edSvc, fields, v);
edSvc.DropDownControl(list);
if (list.MadeSelection)
{
if (nameOnly)
{
value = list.Selection.Name;
}
else
{
value = list.Selection;
}
}
}
}
}
}
}
return(value);
}
