最近做了個專案,客戶對匯出excel功能情有獨鍾,幾乎要求每一個列表資料都支援匯出excel功能,為了避免程式碼重複,萬能粉嫩的小碼農開發了萬能匯出QAQ.
匯出Excel無非就是取出資料,然後利用Aspose.Cells外掛填充到Excel檔案中,DataTable型別的資料是最適合填充Excel不過了.唯一的問題就是DataTable資料的列頭一般是英文,突然就想出了利用SQL Server每一列的說明來替換掉英文列頭的方法,我太TM機智了.

        /// <summary>
        /// 匯出
        /// </summary>
        /// <param name="dt"
 
>匯出的資料表</param>
        /// <param name="dic">欄位名稱,欄位中文名稱</param>
        /// <param name="title">匯出第一行標題</param>
        /// <returns></returns>
        public Workbook ExportData(DataTable table, Dictionary<string, string> dic, string title = "")
        {
            title = string.IsNullOrEmpty
 
(title) ? "匯出資料" : title;

            Workbook workbook = new Workbook();
            workbook.Worksheets.RemoveAt(0);//移除第一個sheet

            var tempStrArray = System.Activator.CreateInstance<T>().GetType().FullName.Split('.');//
            string tableName = tempStrArray[tempStrArray.Count() - 1
 
];//這兩句是反射生成要操作的表格名稱的,
            var baseDic = GetColumnsByTable(tableName, "");

            foreach (DataColumn item in table.Columns)
            {
                string chsColumnName = "";
                if (baseDic.TryGetValue(item.ColumnName, out chsColumnName) && !string.IsNullOrEmpty(chsColumnName))
                    item.ColumnName = chsColumnName;
                if (dic.TryGetValue(item.ColumnName, out chsColumnName) && !string.IsNullOrEmpty(chsColumnName))
                    item.ColumnName = chsColumnName;
            }

            int Colnum = table.Columns.Count;//表格列數
            int Rownum = table.Rows.Count;//表格行數

            Worksheet sheet = workbook.Worksheets.Add(title);
            Cells cells = sheet.Cells;//單元格

            //為標題設定樣式
            Style styleTitle = workbook.Styles[workbook.Styles.Add()];//新增樣式
            styleTitle.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            styleTitle.Font.Name = "宋體";//文字字型
            styleTitle.Font.Size = 18;//文字大小
            styleTitle.Font.IsBold = true;//粗體

            //樣式2
            Style style2 = workbook.Styles[workbook.Styles.Add()];//新增樣式
            style2.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            style2.Font.Name = "宋體";//文字字型
            style2.Font.Size = 13;//文字大小
            style2.Font.IsBold = true;//粗體
            style2.IsTextWrapped = true;//單元格內容自動換行
            style2.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

            //樣式3
            Style style3 = workbook.Styles[workbook.Styles.Add()];//新增樣式
            style3.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            style3.Font.Name = "宋體";//文字字型
            style3.Font.Size = 12;//文字大小
            style3.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

            //生成行1 標題行
            cells.Merge(0, 0, 1, Colnum);//合併單元格
            cells[0, 0].PutValue(title);//填寫內容
            cells[0, 0].SetStyle(styleTitle);
            cells.SetRowHeight(0, 38);

            //生成行2 列名行
            for (int i = 0; i < Colnum; i++)
            {
                cells[1, i].PutValue(table.Columns[i].ColumnName);
                cells[1, i].SetStyle(style2);
                cells.SetRowHeight(1, 25);
                cells.SetColumnWidth(i, 30);
            }

            //生成資料行
            for (int i = 0; i < Rownum; i++)
            {
                for (int k = 0; k < Colnum; k++)
                {
                    cells[2 + i, k].PutValue(table.Rows[i][k].ToString());
                    if (k == Colnum - 1)
                    {
                        style3.HorizontalAlignment = TextAlignmentType.Left;//文字居中
                    }
                    else
                    {
                        style3.HorizontalAlignment = TextAlignmentType.Center;//文字居中
                    }
                    cells[2 + i, k].SetStyle(style3);
                }
                cells.SetRowHeight(2 + i, 24);
            }
            return workbook;
        }

        /// <summary>
        /// 獲取某個表下面的所有列名和說明
        /// </summary>
        /// <param name="tbname">表名</param>
        /// <param name="orderrule">排序規則</param>
        /// <returns></returns>
        public Dictionary<string, string> GetColumnsByTable(string tbname, string orderrule)
        {
            StringBuilder sqlsb = new StringBuilder();
            sqlsb.Append("SELECT distinct ColumnsName = c.name,Description = isnull(ex.value,'') ");
            sqlsb.Append("FROM sys.columns c LEFT OUTER JOIN sys.extended_properties ex ");
            sqlsb.Append("ON ex.major_id = c.object_id AND ex.minor_id = c.column_id AND ex.name = 'MS_Description' ");
            sqlsb.Append("left outer join systypes t on c.system_type_id=t.xtype ");
            sqlsb.Append("WHERE OBJECTPROPERTY(c.object_id, 'IsMsShipped')=0 AND ");
            sqlsb.Append("OBJECT_NAME(c.object_id) ='{0}' ");
            if (!string.IsNullOrEmpty(orderrule))
            {
                sqlsb.Append("order by ColumnsName {1}");
            }
            else
            {
                sqlsb.Append("order by ColumnsName ASC");
            }

            string exsql = string.Format(sqlsb.ToString(), tbname, orderrule);

            DataTable dt = DB.FromSql(exsql).ToTable() as DataTable;//用了MySoft框架QAQ

            Dictionary<string, string> dic = new Dictionary<string, string>();
            if (dt != null && dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    dic.Add(dt.Rows[i][0].ToString(), dt.Rows[i][1].ToString());
                }
            }
            return dic;
        }

兩個搞定了,能實現絕大部分的匯出業務.

轉自–殘顏的部落格