表格导出之Aspose.Cells

该导出方法需要引用Aspose.Cells

        /// <summary>
        /// Excel导出通用
        /// </summary>
        /// <param name="ReportTitleName">报表名称</param>
        /// <param name="list">数据源</param>
        /// <param name="IsColumn">是否有表头 默认有</param>
        /// <returns></returns>
        public static MemoryStream DatabseToExcel(string ReportTitleName, DataTable list, int IsColumn = 1)
        {
            try
            {
                Workbook wb = new Workbook();
                Worksheet ws = wb.Worksheets[0];
                Cells cell = ws.Cells;
                //定义并获取导出的数据源
                string[,] _ReportDt = new string[list.Rows.Count, list.Columns.Count];
                for (int i = 0; i < list.Rows.Count; i++)
                {
                    for (int j = 0; j < list.Columns.Count; j++)
                    {
                        _ReportDt[i, j] = list.Rows[i][j].ToString();
                    }
                }
                //合并第一行单元格
                Range range = cell.CreateRange(0, 0, 1, list.Columns.Count);
                range.Merge();
                cell["A1"].PutValue(ReportTitleName); //标题

                //设置行高
                cell.SetRowHeight(0, 20);

                //设置字体样式
                Style style1 = wb.Styles[wb.Styles.Add()];
                style1.HorizontalAlignment = TextAlignmentType.Center;//文字居中
                style1.Font.Name = "宋体";
                style1.Font.IsBold = true;//设置粗体
                style1.Font.Size = 12;//设置字体大小

                Style style2 = wb.Styles[wb.Styles.Add()];
                style2.HorizontalAlignment = TextAlignmentType.Center;
                style2.Font.Size = 10;

                //给单元格关联样式
                cell["A1"].SetStyle(style1); //报表名字 样式

                //设置Execl列名
                int posStart = 0;
                if (IsColumn == 1)
                {
                    for (int i = 0; i < list.Columns.Count; i++)
                    {
                        cell[1, i].PutValue(list.Columns[i].ColumnName);
                        cell[1, i].SetStyle(style2);
                    }

                    posStart = 2;
                }
                else
                {
                    posStart = 1;
                }
                //设置单元格内容
                for (int i = 0; i < list.Rows.Count; i++)
                {
                    for (int j = 0; j < list.Columns.Count; j++)
                    {
                        cell[i + posStart, j].PutValue(_ReportDt[i, j].ToString());
                        cell[i + posStart, j].SetStyle(style2);
                    }
                }
                //自适应宽度
                setColumnWithAuto(ws);

                MemoryStream stream = new MemoryStream();
                stream = wb.SaveToStream();
                stream.Seek(0, SeekOrigin.Begin);
                return stream;
            }
            catch (Exception e)
            {

                return null;
            }

        }
        static void setColumnWithAuto(Worksheet sheet)
        {
            Cells cells = sheet.Cells;
            int columnCount = cells.MaxColumn;  //获取表页的最大列数
            int rowCount = cells.MaxRow;        //获取表页的最大行数

            for (int col = 0; col < columnCount; col++)
            {
                sheet.AutoFitColumn(col, 0, rowCount);
            }
            for (int col = 0; col < columnCount; col++)
            {
                cells.SetColumnWidthPixel(col, cells.GetColumnWidthPixel(col) + 30);
            }
        }