protected override void SetComboBox() { comboBox_FromUnit.DataSource = new BindingSource(WeightAndMassConverter.NiceComboboxData(), null); comboBox_FromUnit.DisplayMember = "Key"; comboBox_FromUnit.ValueMember = "Value"; comboBox_ToUnit.DataSource = new BindingSource(WeightAndMassConverter.NiceComboboxData(), null); comboBox_ToUnit.DisplayMember = "Key"; comboBox_ToUnit.ValueMember = "Value"; }