public static void Bind <TBinding, TSource, TProperty>(
this ComboBox comboBox,
TBinding item,
Expression <Func <TBinding, TProperty> > member, ComboBoxSource.ComboBoxBinding <TSource> binding)
{
BindSource(comboBox, binding);
BindSelectedItem(comboBox, item, member, binding);
}
public Bind <TBinding> For <TSource, TProperty>(
ComboBox comboBox,
Expression <Func <TBinding, TProperty> > member,
ComboBoxSource.ComboBoxBinding <TSource> binding)
{
comboBox.Bind(_item, member, binding);
return(this);
}
private static void BindSelectedItem <TBinding, TSource, TProperty>(ComboBox comboBox,
TBinding item,
Expression <Func <TBinding, TProperty> > member,
ComboBoxSource.ComboBoxBinding <TSource> binding)
{
comboBox.DataBindings.Add(nameof(ComboBox.SelectedItem), item, ReflectionUtils.GetPropertyName(member));
comboBox.SetDefault(binding.DefaultValue);
comboBox.SelectionChangeCommitted += (sender, e) => comboBox.DataBindings[nameof(ComboBox.SelectedItem)].WriteValue();
(comboBox.DataSource as IBindingList).ListChanged += (sender, e) =>
{
var value = ReflectionUtils.GetValue(item, member);
if (value == null)
{
comboBox.SetDefault(binding.DefaultValue);
}
};
}
private static void BindSource <TSource>(ComboBox comboBox, ComboBoxSource.ComboBoxBinding <TSource> binding)
{
comboBox.DataSource = binding.Source;
comboBox.DisplayMember = binding.DisplayMember;
comboBox.ValueMember = binding.ValueMember;
}