private void RemoveOption(object option, int index)
{
if (this._nativeComboBoxDomElement == null)
{
return;
}
INTERNAL_HtmlDomManager.RemoveOptionFromNativeComboBox(this._nativeComboBoxDomElement, index);
}
protected override bool TryRemoveChildItemFromVisualTree(object item)
{
if (_useNativeComboBox)
{
if (_nativeComboBoxDomElement != null)
{
var optionDomElement = _itemContainerGenerator.INTERNAL_ContainerFromItem(item);
if (optionDomElement != null)
{
INTERNAL_HtmlDomManager.RemoveOptionFromNativeComboBox(optionDomElement, _nativeComboBoxDomElement);
return(_itemContainerGenerator.INTERNAL_TryUnregisterContainer(optionDomElement, item));
}
}
return(false);
}
else
{
return(base.TryRemoveChildItemFromVisualTree(item));
}
}
private void ResetOptions()
{
if (this._nativeComboBoxDomElement == null)
{
return;
}
for (int i = 0; i < this.Items.Count + 1; ++i) // +1 to remove the 'empty option'
{
// empty the combobox
INTERNAL_HtmlDomManager.RemoveOptionFromNativeComboBox(this._nativeComboBoxDomElement, 0);
}
this.AddEmptyOption(); // 'empty option'
for (int i = 0; i < this.Items.Count; ++i)
{
this.AddOption(this.Items[i], i + 1);
}
// Set selectedindex
this.SetSelectedIndexInNativeHtmlDom(this.SelectedIndex);
}
