本文章主要介绍报表的生成，基于Aspose.Cell控件的报表生成。谈到报表，估计大家都有所领悟以及个人的理解，总的来说，一般的报表生成，基本上是基于以下几种方式：一种是基于微软Excel内置的引擎来实现；一种是构造HTML格式的Excle报表；一种是基于控件的方式来处理，基于控件有很多种方式，个人认为比较有名的是Aspose.Cell（收费破解）和NPOI（开源）。
而报表的表现方式大致可以分为两种：
一种是通用的二维表导出的Excel格式，这种方式通过封装一个操作类，传递一个DataTable参数，把数据导出就可以了。这种报表特点是操作方便，通用，能应付一般常用的数据报表，如下所示；
由于这种报表，一般是在一个数据表格中显示，通常的做法是把这个东西做成控件，一个可以解决分页问题，一个可以解决导出、打印问题等，
当然，也可以把导入导出Excel的操作封装成一个公用的辅助来调用，如我封装的Aspose.Cell的导入导出处理函数如下所示：
代码 public class AsposeExcelTools { public static bool DataTableToExcel(DataTable datatable, string filepath, out string error) { error = ""; try { if (datatable == null) { error = "DataTableToExcel:datatable 为空"; return false; } Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook(); Aspose.Cells.Worksheet sheet = workbook.Worksheets[0]; Aspose.Cells.Cells cells = sheet.Cells; int nRow = 0; foreach (DataRow row in datatable.Rows) { nRow++; try { for (int i = 0; i < datatable.Columns.Count; i++) { if (row[i].GetType().ToString() == "System.Drawing.Bitmap") { //------插入图片数据------- System.Drawing.Image image = (System.Drawing.Image)row[i]; MemoryStream mstream = new MemoryStream(); image.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg); sheet.Pictures.Add(nRow, i, mstream); } else { cells[nRow, i].PutValue(row[i]); } } } catch (System.Exception e) { error = error + " DataTableToExcel: " + e.Message; } } workbook.Save(filepath); return true; } catch (System.Exception e) { error = error + " DataTableToExcel: " + e.Message; return false; } } public static bool DataTableToExcel2(DataTable datatable, string filepath, out string error) { error = ""; Aspose.Cells.Workbook wb = new Aspose.Cells.Workbook(); try { if (datatable == null) { error = "DataTableToExcel:datatable 为空"; return false; } //为单元格添加样式 Aspose.Cells.Style style = wb.Styles[wb.Styles.Add()]; //设置居中 style.HorizontalAlignment = Aspose.Cells.TextAlignmentType.Center; //设置背景颜色 style.ForegroundColor = System.Drawing.Color.FromArgb(153, 204, 0); style.Pattern = BackgroundType.Solid; style.Font.IsBold = true; int rowIndex = 0; for (int i = 0; i < datatable.Columns.Count; i++) { DataColumn col = datatable.Columns[i]; string columnName = col.Caption ?? col.ColumnName; wb.Worksheets[0].Cells[rowIndex, i].PutValue(columnName); wb.Worksheets[0].Cells[rowIndex, i].Style = style; } rowIndex++; foreach (DataRow row in datatable.Rows) { for (int i = 0; i < datatable.Columns.Count; i++) { wb.Worksheets[0].Cells[rowIndex, i].PutValue(row[i].ToString()); } rowIndex++; } for (int k = 0; k < datatable.Columns.Count; k++) { wb.Worksheets[0].AutoFitColumn(k, 0, 150); } wb.Worksheets[0].FreezePanes(1, 0, 1, datatable.Columns.Count); wb.Save(filepath); return true; } catch (Exception e) { error = error + " DataTableToExcel: " + e.Message; return false; } } /// <summary> /// Excel文件转换为DataTable. /// </summary> /// <param name="filepath">Excel文件的全路径</param> /// <param name="datatable">DataTable:返回值</param> /// <param name="error">错误信息:返回错误信息，没有错误返回""</param> /// <returns>true:函数正确执行 false:函数执行错误</returns> public static bool ExcelFileToDataTable(string filepath, out DataTable datatable, out string error) { error = ""; datatable = null; try { if (File.Exists(filepath) == false) { error = "文件不存在"; datatable = null; return false; } Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook(); workbook.Open(filepath); Aspose.Cells.Worksheet worksheet = workbook.Worksheets[0]; datatable = worksheet.Cells.ExportDataTable(0, 0, worksheet.Cells.MaxRow + 1, worksheet.Cells.MaxColumn + 1); //-------------图片处理------------- Aspose.Cells.Pictures pictures = worksheet.Pictures; if (pictures.Count > 0) { string error2 = ""; if (InsertPicturesIntoDataTable(pictures, datatable, out datatable, out error2) == false) { error = error + error2; } } return true; } catch (System.Exception e) { error = e.Message; return false; } } public static bool ExcelFileToLists(string filepath, out IList[] lists, out string error) { error = ""; lists = null; DataTable datatable = new DataTable(); IList list = new ArrayList(); Pictures[] pictures; if (ExcelFileToDataTable(filepath, out datatable, out error) && GetPicturesFromExcelFile(filepath, out pictures, out error)) { lists = new ArrayList[datatable.Rows.Count]; //------------DataTable转换成IList[]-------------- //数据 int nRow = 0; foreach (DataRow row in datatable.Rows) { lists[nRow] = new ArrayList(datatable.Columns.Count); for (int i = 0; i <= datatable.Columns.Count - 1; i++) { lists[nRow].Add(row[i]); } nRow++; } //图片 for (int i = 0; i < pictures.Length; i++) { foreach (Picture picture in pictures[i]) { try { //----把图片转换成System.Drawing.Image---- //MemoryStream mstream = new MemoryStream(); //mstream.Write(picture.Data, 0, picture.Data.Length); //System.Drawing.Image image = System.Drawing.Image.FromStream(mstream); //----Image放入IList------ //图片有可能越界 if (picture.UpperLeftRow <= datatable.Rows.Count && picture.UpperLeftColumn <= datatable.Columns.Count) { lists[picture.UpperLeftRow][picture.UpperLeftColumn] = picture.Data; } } catch (System.Exception e) { error = error + e.Message; } } } } else { return false; } return true; } public static bool ListsToExcelFile(string filepath, IList[] lists, out string error) { error = ""; //----------Aspose变量初始化---------------- Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook(); Aspose.Cells.Worksheet sheet = workbook.Worksheets[0]; Aspose.Cells.Cells cells = sheet.Cells; //-------------输入数据------------- int nRow = 0; sheet.Pictures.Clear(); cells.Clear(); foreach (IList list in lists) { for (int i = 0; i <= list.Count - 1; i++) { try { System.Console.WriteLine(i.ToString() + " " + list[i].GetType()); if (list[i].GetType().ToString() == "System.Drawing.Bitmap") { //插入图片数据 System.Drawing.Image image = (System.Drawing.Image)list[i]; MemoryStream mstream = new MemoryStream(); image.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg); sheet.Pictures.Add(nRow, i, mstream); } else { cells[nRow, i].PutValue(list[i]); } } catch (System.Exception e) { error = error + e.Message; } } nRow++; } //-------------保存------------- workbook.Save(filepath); return true; }