using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Eson.Utils.ExcelHelper
{
    /// <summary>
    /// Excel导出帮助类
    /// </summary>
    public class ExcelHelper
    {
        private static ExcelHelper _instance;
        /// <summary>
        /// 实例化导出Excel帮助类
        /// </summary>
        /// <returns></returns>
        public static ExcelHelper GetInstance()
        {
            if (_instance == null)
                _instance = new ExcelHelper();
            return _instance;
        }

        /// <summary>
        /// 调用Excel模板形式导出Excel（在需要特殊样式时可使用自己设置好样式的模板导出Excel，通常情况下建议使用内存流形式导出）
        /// </summary>
        /// <returns></returns>
        public ExcelFileExport ExportWithFile()
        {
            return new ExcelFileExport();
        }

        /// <summary>
        /// 调用内存流形式导出Excel
        /// </summary>
        /// <returns></returns>
        public ExcelStreamExport ExportWithStream()
        {
            return new ExcelStreamExport();
        }
    }
}