ExcelPackage 读取、导出excel

ExcelPackage 读取、导出excel

        private static string GetString(object obj)
        {
            try
            {
                return obj.ToString();
            }
            catch (Exception ex)
            {
                return "";
            }
        }

        /// 

        ///将指定的Excel的文件转换成DataTable （Excel的第一个sheet）
        /// 
        /// 文件的绝对路径
        /// 
        public DataTable WorksheetToTable(string filePath)
        {
            try
            {
                FileInfo existingFile = new FileInfo(filePath);

                ExcelPackage package = new ExcelPackage(existingFile);
                ExcelWorksheet worksheet = package.Workbook.Worksheets[1];//选定 指定页

                return WorksheetToTable(worksheet);
            }
            catch (Exception)
            {
                throw;
            }
        }

        /// 

        /// 将worksheet转成datatable
        /// 
        /// 待处理的worksheet
        /// 返回处理后的datatable
        public static DataTable WorksheetToTable(ExcelWorksheet worksheet)
        {
            //获取worksheet的行数
            int rows = worksheet.Dimension.End.Row;
            //获取worksheet的列数
            int cols = worksheet.Dimension.End.Column;

            DataTable dt = new DataTable(worksheet.Name);
            DataRow dr = null;
            for (int i = 1; i <= rows; i++)
            {
                if (i > 1)
                    dr = dt.Rows.Add();

                for (int j = 1; j <= cols; j++)
                {
                    //默认将第一行设置为datatable的标题
                    if (i == 1)
                        dt.Columns.Add(GetString(worksheet.Cells[i, j].Value));
                    //剩下的写入datatable
                    else
                        dr[j - 1] = GetString(worksheet.Cells[i, j].Value);
                }
            }
            return dt;
        }

 

posted on 2018-08-02 16:40  无影飞絮剑 阅读( ...) 评论( ...) 编辑 收藏

转载于:https://www.cnblogs.com/itslives-com/p/ExcelPackage.html