/// <summary>
/// 添加实体
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="entity">实体</param>
/// <param name="propertyNames">属性名集合</param>
private void AddEntity <T>(T entity, IEnumerable <string> propertyNames) where T : class
{
var values = GetPropertyValues(entity, propertyNames);
Sheet.AddBodyRow(values.ToArray());
}
