Microsoft.VisualStudio.R.Package.DataInspect.DataImport.ImportDataWindow.GetSelectedNullableIntValueAsString C# (CSharp) Method

        private static string GetSelectedNullableIntValueAsString(ComboBox comboBox) {
            if (comboBox.SelectedItem == null) {
                return null;
            }

            var val = ((KeyValuePair<string, int?>)comboBox.SelectedItem).Value;
            return val?.ToString(CultureInfo.InvariantCulture) ?? "NULL";
        }