告别ASP.NET操作EXCEL的烦恼
2011-05-28 22:15
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ASP.NET操作EXCEL代码
公元19XX年前,关于EXCEL的操作就如滔滔江水,连绵不绝,真正操作EXCEL我也是从去年下半年开始的,有些比较复杂的年度报表之类的,做起来也有点费力,不过还是都能画出来了,关于EXCEL的报表导出,考虑到导出耗时的问题我主要采用AJAX来做的,分别捕捉几个起止状态,给客户端提示3个状态:正在检索数据。。。---》准备导出数据。。。(只是从数据库成功取出,还没有读写excel文件)--》正在读写文件--》导出数据成功,当然如果哪一过程出错,都有对应的提示,只所以想到写这篇文章,主要是因为今年有个系统的部分EXCEL的操作也让我做,顺便结合之前操作EXCEL的经验作一下总结,可能也算不上什么,对于绝大多数来说也没什么技术含量,网上一搜一大把,但我想还是有必要总结一下,至少能给园子里的新手些许帮助,OK,Let's Go... 一. 程序操作EXCEL的应用主要还是在统计报表方面,您可能会考虑读EXCEL模板,也可能会考虑没必要读模板,其实读不读模板都能达到一样的效果,看实际情况而用了。 1. 读模板的话,首先模板存放在某个路径下,根据模板把从数据库里取出的数据写回EXCEL然后生成一个新的EXCEL存放都另一个路径以供下载,模板不变。 我这里的EXCEL操作主要是在VS2005里的,VS2003也可以的,不过没怎么研究03里的操作(文章最后我会把05的示例下载地址贴上那个demo里之前打包忘了放了一个生成数据的文件,刚放进去了,不加也是可以运行的,还有模板文件的数据稍微过滤了下重新放了部分对照看下)vs05中操作EXCEL直接引用.NET自带的COM组件 ,添加后项目的bin目录下会自动出现 Interop.Excel.dll这个DLL(需安装office2003 excel,下面的说明及示例都是基于office2003的,版本不同调用可能会不一样) 页面的命名空间引用 using Excel; 下面是调用模板的一段代码 1 #region 使用模板导出Excel表 2 case "ReportByTemp": 3 { 4 5 DataView dv = Cache["ReportByTemp"] as DataView; 6 //建立一个Excel.Application的新进程 7 Excel.Application app = new Excel.Application(); 8 if (app == null) 9 { 10 return; 11 } 12 app.Visible = false; 13 app.UserControl = true; 14 Workbooks workbooks = app.Workbooks; 15 _Workbook workbook = workbooks.Add(template_path + "//EXCEL测试模板.xls");//这里的Add方法里的参数就是模板的路径 16 Sheets sheets = workbook.Worksheets; 17 _Worksheet worksheet = (_Worksheet)sheets.get_Item(1);//模板只有一个sheet表 18 if (worksheet == null) 19 { 20 return; 21 } 22 23 int rowNum = 0; 24 for (int i = 0; i < dv.Count; i++) 25 { 26 rowNum = i + 1; 27 worksheet.Cells[3 + i, 1] = rowNum; 28 worksheet.Cells[3 + i, 2] = dv[i].Row[0].ToString(); 29 worksheet.Cells[3 + i, 3] = dv[i].Row[1].ToString(); 30 31 excelOperate.SetBold(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 1]); //黑体 32 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]);//居中 33 worksheet.get_Range(worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 34 35 } 36 37 tick = DateTime.Now.Ticks.ToString(); 38 save_path = temp_path + "//" + tick + ".xls"; 39 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); 40 excelOperate.Dispose(worksheet, workbook, app);//关闭Excel进程 41 42 } 43 break; 44 #endregion 效果如下: 2. 不读模板的话,调用的时候其实会继承一个空白模板,然后写入数据,程序画表头,最终达到一样的效果,程序如下: 1 #region 不使用模板生成Excel表 2 case "ReportByNone": 3 { 4 5 DataView dv = Cache["ReportByNone"] as DataView; 6 //建立一个Excel.Application的新进程 7 Excel.Application app = new Excel.Application(); 8 if (app == null) 9 { 10 return; 11 } 12 app.Visible = false; 13 app.UserControl = true; 14 Workbooks workbooks = app.Workbooks; 15 _Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);//这里的Add方法里的参数就相当于继承了一个空模板(暂这样理解吧) 16 Sheets sheets = workbook.Worksheets; 17 _Worksheet worksheet = (_Worksheet)sheets.get_Item(1); 18 if (worksheet == null) 19 { 20 return; 21 } 22 23 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 3]).Merge(Missing.Value); //横向合并 24 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 1]).Value2 = "导出EXCEL测试一"; 25 excelOperate.SetBold(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1]); //黑体 26 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1]);//居中 27 excelOperate.SetBgColor(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], System.Drawing.Color.Red);//背景色 28 excelOperate.SetFontSize(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], 16);//字体大小 29 excelOperate.SetRowHeight(worksheet, worksheet.Cells[1, 1], worksheet.Cells[1, 1], 32.25);//行高 30 worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, 1]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);//黑色连续边框 31 32 worksheet.Cells[2, 1] = "序号"; 33 worksheet.Cells[2, 2] = "公司"; 34 worksheet.Cells[2, 3] = "部门"; 35 excelOperate.SetBold(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3]); //黑体 36 worksheet.get_Range(worksheet.Cells[2, 1], worksheet.Cells[2, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 37 excelOperate.SetHAlignRight(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3]); 38 excelOperate.SetBgColor(worksheet, worksheet.Cells[2, 1], worksheet.Cells[2, 3], System.Drawing.Color.Silver);//背景色 39 int rowNum = 0; 40 for (int i = 0; i < dv.Count; i++) 41 { 42 rowNum = i + 1; 43 worksheet.Cells[3 + i, 1] = rowNum; 44 worksheet.Cells[3 + i, 2] = dv[i].Row[0].ToString(); 45 worksheet.Cells[3 + i, 3] = dv[i].Row[1].ToString(); 46 47 excelOperate.SetBold(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 1]); //黑体 48 excelOperate.SetHAlignCenter(worksheet, worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]);//居中 49 worksheet.get_Range(worksheet.Cells[3 + i, 1], worksheet.Cells[3 + i, 3]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black);//设置边框颜色,不然打印预览,会非常不雅观 50 51 } 52 excelOperate.SetColumnWidth(worksheet, "A", 10); 53 excelOperate.SetColumnWidth(worksheet, "B", 20); 54 excelOperate.SetColumnWidth(worksheet, "C", 20); 55 worksheet.Name = "导出EXCEL测试一"; 56 57 tick = DateTime.Now.Ticks.ToString(); 58 save_path = temp_path + "//"+ tick + ".xls"; 59 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); 60 excelOperate.Dispose(worksheet, workbook, app);//关闭Excel进程 61 62 } 63 break; 64 65 #endregion 效果如下: 以上我给了两个最简单的操作说明,下面详细说一下对于一些稍微复杂的报表的生成处理 二. 对于复杂的EXCEL报表的生成处理,无非是纵向合并相同的数据行及嵌套纵向合并等一些操作,下面就几个具有针对性的报表作下说明. 1.要生成相对复杂的EXCEL表,在从数据库取数据时,要注意先按照合理的要求排好序,有时候可能order by后面要跟好几个字段,而且这几个字段谁先谁后也要注意,因为这些会直接影响报表呈现的效果,比如你的EXCEL表要按月份统计国内外的项目,显示出来的时候要多个项目相同的人连续,那么排序就可能要这样order by 月份,项目类别,用户ID,项目ID(这是写好的视图,基于视图来检索的),这个排序的字段顺序就不能变了,变了的话就不太好生成想要的形式了,如下图: 这个也是动态画的,用了个简单的模板,模板就一个表头,没多大意义,除非表头很复杂而且在列表中不需要重画,考虑模板就比较好,向上面那个一月份国际的和其它月份的都是需要重画表头的。至于合并,如果不是嵌套的合并,我们可以在向模板循环写数据的时候直接控制,比如下面一个简单的写法: 1 for (i = 0; i < table.Rows.Count; i++) 2 { 3 bidName = table.Rows[index]["BIDNAME"].ToString(); 4 if (table.Rows[i]["BIDNAME"].ToString() == bidName) 5 { 6 projNum++; 7 worksheet.Cells[5 + i, 2] = table.Rows[i]["PROJNO"]; 8 worksheet.Cells[5 + i, 3] = table.Rows[i]["PROJNAME"]; 9 worksheet.Cells[5 + i, 4] = table.Rows[i]["STAT_DATE"]; 10 worksheet.Cells[5 + i, 5] = table.Rows[i]["PROJTYPE"]; 11 worksheet.Cells[5 + i, 6] = table.Rows[i]["CONTENT"]; 12 worksheet.Cells[5 + i, 7] = table.Rows[i]["OPENDT"]; 13 worksheet.Cells[5 + i, 8] = table.Rows[i]["OPENADDRESS"]; 14 worksheet.Cells[5 + i, 9] = table.Rows[i]["REV_DATE"]; 15 worksheet.Cells[5 + i, 10] = table.Rows[i]["BID_UNIT"]; 16 worksheet.Cells[5 + i, 11] = table.Rows[i]["AGT_AMOUNT"]; 17 worksheet.Cells[5 + i, 12] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BIDSER_AMOUNT"]; 18 worksheet.Cells[5 + i, 13] = table.Rows[i]["SENDDATE"]; 19 worksheet.Cells[5 + i, 14] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BIDPRICE"]; 20 worksheet.Cells[5 + i, 15] = table.Rows[i]["BOOKAMOUNT"]; 21 worksheet.Cells[5 + i, 16] = table.Rows[i]["CURRENCY"] + ":" + table.Rows[i]["BAIL_AMOUNT"]; 22 worksheet.Cells[5 + i, 17] = table.Rows[i]["USERNAME"]; 23 worksheet.Cells[5 + i, 18] = table.Rows[i]["SECOND_USER"]; 24 worksheet.Cells[5 + i, 19] = ""; 25 worksheet.get_Range(worksheet.Cells[5 + i, 1], worksheet.Cells[5 + i, 19]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 26 continue; 27 } 28 29 worksheet.get_Range(worksheet.Cells[5 + rowid, 1], worksheet.Cells[5 + i - 1, 1]).Merge(Missing.Value); //将第一列按投标单位合并 30 worksheet.get_Range(worksheet.Cells[5 + rowid, 1], worksheet.Cells[5 + rowid, 1]).Value2 = bidName + "(" + projNum.ToString() + "个项目)";//合并后的单元格内容 合并单元格的时候也要注意一个问题,就是合并的单元格必须是为空的,不然在执行合并时,会提示“合并后的单元格的值将丢失”,具体不这样提示的,大致是这个意思,一般我们合并都单元格相同的内容,在合并前我们先保存那个值,再清空后合并,上面的代码中把worksheet.Cell[5+rowid,1]这里系列的单元格的值空出来了,没写数据,而且最后合并了再写值,避免了去循环清空。 2.嵌套的合并向上面那样做可能控制比较麻烦,而且思路可能很混乱,我们可以考虑先循环填充所有的数据,在循环出来要合并的列,比如像下面的这张表 先循环填充数据,如下: 1 int index = 0, rownum = 0; 2 string ProjNo = ""; 3 for (i = 0; i < table.Rows.Count; i++) 4 { 5 ProjNo = table.Rows[index]["PROJNO"].ToString(); 6 if (table.Rows[i]["PROJNO"].ToString() == ProjNo) 7 { 8 wksheet.Cells[3 + i, 1] = rownum + 1; 9 wksheet.Cells[3 + i, 2] = "'" + table.Rows[i]["PROJNO"]; //加上单引号保证以0开头的字符原样输出 10 wksheet.Cells[3 + i, 3] = "'" + table.Rows[i]["PROJNAME"]; 11 wksheet.Cells[3 + i, 4] = "'" + table.Rows[i]["PA_NAME"]; 12 wksheet.Cells[3 + i, 5] = "'" + table.Rows[i]["BIDER_NAME"]; 13 wksheet.Cells[3 + i, 6] = table.Rows[i]["BAIL_AMOUNT"]; 14 wksheet.Cells[3 + i, 7] = table.Rows[i]["NOT_BACK"]; 15 wksheet.get_Range(wksheet.Cells[3 + i, 1], wksheet.Cells[3 + i, 7]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 16 continue; 17 } 18 19 index = i; 20 rownum++; 21 i--; 22 23 } 下面合并前三列相同内容的单元: 1 //合并前三列操作 2 int m = 1, rowid = 3, k; 3 string projName = ""; 4 for (k = 3; k <= i + 2; k++) 5 { 6 if (Convert.ToInt32(wksheet.get_Range(wksheet.Cells[k, 1], wksheet.Cells[k, 1]).Value2) == m) 7 { 8 ProjNo = wksheet.get_Range(wksheet.Cells[k, 2], wksheet.Cells[k, 2]).Value2.ToString(); 9 projName = wksheet.get_Range(wksheet.Cells[k, 3], wksheet.Cells[k, 3]).Value2.ToString(); 10 wksheet.get_Range(wksheet.Cells[k, 1], wksheet.Cells[k, 1]).Value2 = ""; 11 wksheet.get_Range(wksheet.Cells[k, 2], wksheet.Cells[k, 2]).Value2 = ""; 12 wksheet.get_Range(wksheet.Cells[k, 3], wksheet.Cells[k, 3]).Value2 = ""; 13 continue; 14 } 15 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[k - 1, 1]).Merge(Missing.Value); 16 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[rowid, 1]).Value2 = m; 17 18 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[k - 1, 2]).Merge(Missing.Value); 19 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[rowid, 2]).Value2 = "'" + ProjNo; 20 21 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[k - 1, 3]).Merge(Missing.Value); 22 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[rowid, 3]).Value2 = "'" + projName; 23 24 m++; 25 rowid = k; 26 k--; 27 } 28 //跳出循环后合并最后一个招标项目 29 30 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[k - 1, 1]).Merge(Missing.Value); 31 wksheet.get_Range(wksheet.Cells[rowid, 1], wksheet.Cells[rowid, 1]).Value2 = m; 32 33 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[k - 1, 2]).Merge(Missing.Value); 34 wksheet.get_Range(wksheet.Cells[rowid, 2], wksheet.Cells[rowid, 2]).Value2 = "'" + ProjNo; 35 36 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[k - 1, 3]).Merge(Missing.Value); 37 wksheet.get_Range(wksheet.Cells[rowid, 3], wksheet.Cells[rowid, 3]).Value2 = "'" + projName; 下面合并标段列 1 //合并标段列 2 3 index = 0; rowid = 3; //重置变量 4 string pa_name = string.Empty; //标段名称 5 for (k = 3; k <= i + 2; k++) 6 { 7 pa_name = table.Rows[index]["PA_NAME"].ToString(); 8 if (wksheet.get_Range(wksheet.Cells[k, 4], wksheet.Cells[k, 4]).Value2.ToString() == pa_name) 9 { 10 wksheet.get_Range(wksheet.Cells[k, 4], wksheet.Cells[k, 4]).Value2 = ""; 11 continue; 12 } 13 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[k - 1, 4]).Merge(Missing.Value); 14 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[rowid, 4]).Value2 = "'" + pa_name; 15 index = k - 3; 16 rowid = k; 17 k--; 18 19 } 20 //退出循环时合并最后一个项目的标段 21 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[k - 1, 4]).Merge(Missing.Value); 22 wksheet.get_Range(wksheet.Cells[rowid, 4], wksheet.Cells[rowid, 4]).Value2 = "'" + pa_name; 23 tick = DateTime.Now.ToString("yyyyMMddhhmmss"); 24 save_path = temp_path + "//" + tick + "保证金收退情况表.xls"; 25 Session["BailBackID"] = tick + "保证金收退情况表.xls"; 26 Session["_BailBack"] = "true"; 27 workbook.SaveAs(save_path, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); 28 excelOperate.Dispose(worksheet, workbook, app);//关闭Excel进程 29 //DownLoad(save_path); 30 //Page_Close(); 当然,上面的操作中会进行好几次循环,在性能方面不太可取,园子里的兄弟也许会有更好的方法,小弟不吝赐教了 下面我们看下几个效果图: (注意:这里提示的导出数据是指从数据库成功取出数据,还没有操作EXCEL对象,刚开始已经说过了,当然这个提示文字换成其它的也可以) 整个过程采用AJAX提示的,一来不刷新,二来导出时间比较长的话,可以给客户一个良好的体验效果,否可,用户一点导出按钮,半天没反应也没提示,客户就觉得怎么这么慢的,是不是你们程序有问题,指责一大堆,有了这么些交互提示信息,让客户多等几分钟也能承受。 3.生成的表格包含多个sheet的操作,比如下面一种情况 绘制这张表的要求是根据选择某年的几月到几月,生成这个几个月的一个综合情况的sheet,然后分别生成这几个月的单独的sheet表,生成上面表的模板,包含两个sheet ,一个综合月份的sheet和一个单独月份的sheet,因为单独月份的sheet表现形式都是一样的,我们可以根据选择的月份个数Copy几个sheet就可以了 1 Workbooks workbooks = app.Workbooks; 2 3 _Workbook workbook = workbooks.Add(template_path + "//招标单位年度招标情况逐月统计表.xls"); 4 Sheets sheets = workbook.Worksheets; 5 _Worksheet Yearsheet = (_Worksheet)sheets.get_Item(1); 6 _Worksheet worksheet = (_Worksheet)sheets.get_Item(2); 7 if (worksheet == null) 8 { 9 return; 10 } 11 for (int i = 1; i < monthCount; i++) 12 worksheet.Copy(Missing.Value, workbook.Worksheets[2]);//月统计工作薄 Yearsheet的操作就不说了,和前面几个一样操作,关键是月份的sheet的生成,其实就是循环操作get_Item(i),代码如下 1 //////////////////////////////////////每月详细统计//////////////////////////////////// 2 3 int item_id = 2; 4 rowNum = 0; book_Amount = 0; index = 0; 5 bid_Amount = ""; bidser_Amount = ""; agent_Amount = 0;//清空变量 6 _Worksheet ws = null; 7 for (int i = 0; i < tableMM.Rows.Count; i++) 8 { 9 rowNum++; 10 Month = tableMM.Rows[index]["DATE_MONTH"].ToString(); 11 if (tableMM.Rows[i]["DATE_MONTH"].ToString() == Month) 12 { 13 ws = (_Worksheet)sheets.get_Item(item_id); 14 ws.Cells[3 + rowNum - 1, 1] = rowNum; 15 ws.Cells[3 + rowNum - 1, 2] = tableMM.Rows[i]["PROJNO"]; 16 ws.Cells[3 + rowNum - 1, 3] = tableMM.Rows[i]["PROJNAME"]; 17 ws.Cells[3 + rowNum - 1, 4] = tableMM.Rows[i]["BID_TYPE"]; 18 ws.Cells[3 + rowNum - 1, 5] = tableMM.Rows[i]["BID_MODE"]; 19 ws.Cells[3 + rowNum - 1, 6] = tableMM.Rows[i]["OPENDT"]; 20 ws.Cells[3 + rowNum - 1, 7] = tableMM.Rows[i]["OPENADDRESS"]; 21 ws.Cells[3 + rowNum - 1, 8] = tableMM.Rows[i]["BID_UNIT"]; 22 ws.Cells[3 + rowNum - 1, 9] = tableMM.Rows[i]["NOTICE_NO"].ToString().Replace("神华国贸", ""); 23 ws.Cells[3 + rowNum - 1, 10] = tableMM.Rows[i]["BOOKAMOUNT"]; 24 ws.Cells[3 + rowNum - 1, 11] = tableMM.Rows[i]["BIDPRICE"] + "(万" + tableMM.Rows[i]["CURRENCY"] + ")"; 25 ws.Cells[3 + rowNum - 1, 12] = tableMM.Rows[i]["BIDSER_AMOUNT"] + "(万" + tableMM.Rows[i]["CURRENCY"]+")"; 26 ws.Cells[3 + rowNum - 1, 13] = tableMM.Rows[i]["AGT_AMOUNT"]; 27 ws.Cells[3 + rowNum - 1, 14] = ""; 28 ws.get_Range(ws.Cells[3 + rowNum - 1, 1], ws.Cells[3 + rowNum - 1, 14]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 29 continue; 30 } 31 32 ws.Cells[1, 1] = year + "年" + bidName + GetMonth(Month) + "月份招标项目情况一览表"; 33 34 //每月合计 35 sql = " SELECT CURRENCY, NVL(SUM(BIDPRICE),0) AS BIDPRICE,NVL(SUM(BOOKAMOUNT),0) AS BOOKAMOUNT,NVL(SUM(BIDSER_AMOUNT),0) AS BIDSER_AMOUNT,NVL(SUM(AGT_AMOUNT),0) AS AGT_AMOUNT FROM IBS_V_BID_MONTHLY_STAT" + SqlFilter + 36 " AND DATE_YEAR ='" + year + "' AND COMPANY_ID=" + biderID + " AND DATE_MONTH ='" + Month + "'" + 37 " GROUP BY CURRENCY"; 38 System.Data.DataTable dt1 = OracleHelper.RetDataTable(sql); 39 for (int m = 0; m < dt1.Rows.Count; m++) 40 { 41 bid_Amount += dt1.Rows[m]["BIDPRICE"] + "(万"+dt1.Rows[m]["CURRENCY"] + ")/r/t"; 42 book_Amount += float.Parse(dt1.Rows[m]["BOOKAMOUNT"].ToString()); 43 bidser_Amount += dt1.Rows[m]["BIDSER_AMOUNT"] + "(万" + dt1.Rows[m]["CURRENCY"] + ")/r/t"; 44 agent_Amount += float.Parse(dt1.Rows[m]["AGT_AMOUNT"].ToString()); 45 } 46 47 ws.Cells[3 + rowNum - 1, 3] = "合 计"; 48 ws.Cells[3 + rowNum - 1, 10] = book_Amount; 49 ws.Cells[3 + rowNum - 1, 11] = bid_Amount; 50 ws.Cells[3 + rowNum - 1, 12] = bidser_Amount; 51 ws.Cells[3 + rowNum - 1, 13] = agent_Amount; 52 ws.get_Range(ws.Cells[3 + rowNum - 1, 1], ws.Cells[3 + rowNum - 1, 14]).Borders.Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Black); 53 ws.Name = GetMM(Month); 54 55 item_id++; 56 index = i; //汇总下一个月份的招标项目 57 i--; 58 rowNum = 0; book_Amount = 0; 59 bid_Amount = ""; bidser_Amount = ""; agent_Amount = 0;//清空变量 60 } 61 62 //跳出循环时进行最后一个月份的项目汇总 用的是oracle数据库,所以上面那个sql语句。。。 呵呵 ============================================================================================ 上面大致说得就差不多了,因为是不断循环的什么的,可能对于大的数据量读写来说,比较好性能,如果大家有什么更好的方法,可以指点下,为了弥补等待时间过长,所以才结合了AJAX来处理。 最后我把做的一个小demo的链接帖出来给大家,还有一些空模板和对应生成的数据表给大家对照看下,尤其相对复杂一些的表画应该是能画出来的,主要看大家采用什么样的方法,能少循环一次就尽量少循环,呵呵~~~ EXCEL模板读写说明 http://www.justlike.com.cn/upfiles/template_xls.rar http://www.justlike.com.cn/upfiles/ExcelFiles.rar http://www.justlike.com.cn/upfiles/ExcelReportDemo.rar (说明:最后弹出下载文件的一个页面一直想让其自动关掉,但是不行,如果不关掉,再点导出,不会弹出下载框,实际的处理中我们可以在导出旁边放个下载按钮,就像上面的效果图里那样,当然可以点导出的时候让其在网页中直接打开,点下载的时候再弹出下载框,但是直接打开的话,文件需要生成在虚拟目录下,不太安全,呵呵~~,看实际情况处理了) ========================================================================================== 今天补充说明下,关于那个调用ajax回调的效果,有个地方用到了所谓的“ajax嵌套调用”,如下 1 function ExcelReportCallback(resp) 2 { 3 if(resp.value == "OK") 4 { 5 6 $('tipMsg').innerHTML = "<img border=/"0/" src=/"images/s_progressbar.gif/"><font color=#FF0000 style=font-weight:bold>准备导出数据,请稍等 </font>"; 7 setTimeout("RedirectUrl()",1000);//延时体验 8 } 9 else 10 if(resp.value == "NO") 11 { 12 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>没有找到符合该查询条件的数据</font>"; 13 $('btnExcel').disabled = false; 14 } 15 else 16 { 17 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>警告:导出数据出错</font>"; 18 $('btnExcel').disabled = false; 19 } 20 21 22 } 1 function RedirectUrl() 2 { 3 $('tipMsg').innerHTML = "<img border=/"0/" src=/"images/ajaxloading.gif/"><font color=#7fffd4 style=font-weight:bold>正在读写报表文件,请稍后 </font>"; 4 var ajax = new ajax_request("ExcelReport.aspx?flag=ReportByTemp&"+Math.random(), "", "", ReportCallback); 5 function ReportCallback(resp) 6 { 7 if(resp.value != "Error" && resp.value !="") 8 { 9 $('btnExcel').disabled = false; 10 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>数据导出成功!</font>"; 11 Open("XLS_DownLoad.aspx?path="+resp.value);//window.location.href = resp.value;// 12 } 13 else 14 { 15 $('btnExcel').disabled = false; 16 $('tipMsg').innerHTML = "<font color=#FF0000 style=font-weight:bold>文件读写出错,请检查文件模板是否存在或对文件是否有读写权限!</font>"; 17 } 18 } 19 20 } 21 22 function Open(url) 23 { 24 window.open(url,'newwindow','height=1,width=1,top=1500,left=1500,toolbar=no,menubar=no,scrollbars=yes,location=no,status=no') 25 } ExcelReportCallback(resp)原本是一个回调函数,但是里面调用了一个RedirectUrl()方法,这个方法又包含了一个回调函数,这样就形成了回调的嵌套,之所以这么做,是因为,第一个回调是处理从数据库取出数据成功与否,如果成功了跳转到画EXCEL的页面,这样的话会出现一个空白页等生成好后出现下载框,后来觉得是否可以嵌套一个回调来继续一次异步操作,这样就不会出现长时间等待的空白页面了,而是生成好EXCEL后返回地址,或者可以返回一个文件名到XLS_DownLoad.aspx页面直接下载,但是XLS_DownLoad.aspx也是要出现的,我尝试过让下载后这个页面自动关闭,无赖做不到,所以把Open()方法里的数据值调得让页面不显示,但是状态栏还是有显示的。 到这里算是写完了,决定奢侈下,放到首页下:),总觉得首页的文章只有高手才能放,而且放到首页也是一种奢侈,希望对园子里的某些人有一定的帮助吧~~ 上面给的地址由于服务器原因下不了了,我重新贴下博客园的下载地址(其实评论里早就贴了) http://files.cnblogs.com/peaceli/ExcelReportDemo.rar http://files.cnblogs.com/peaceli/shuoming.rar 文档说明 注意两个地方: 1、获取范围用: Excel.Range tmpRange = tmpSheet.Range[tmpSheet.Cells[1, 1], tmpSheet.Cells[1,4]]; 2、在页面下载用: private void DownLoad(string path) { if (path != null && File.Exists(path)) { System.IO.FileInfo file = new System.IO.FileInfo(path); //清除缓冲区流中的所有内容输出 Response.Clear(); //将下载保存对话框指定默认的文件名添加到HTTP头中 //Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));//避免中文出现乱码现象 //在header中指定文件的大小,使浏览器能显示下载过程 Response.AddHeader("Content-Length", file.Length.ToString()); //设置输出流的 HTTP MIME 类型 Response.ContentType = "application/octet-stream"; // 发送文件流到客户端 Response.WriteFile(file.FullName); // 停止该页的执行 Response.End(); } else { Response.Write("文件自动下载中断,请手动下载"); } } 3、类文件 using System; using System.Web; using Excel=Microsoft.Office.Interop.Excel; /// <summary> /// ExcelOperate 的摘要说明。Excel操作函数 /// </summary> public class ExcelOperate { private object mValue = System.Reflection.Missing.Value; public ExcelOperate() { // // TODO: 在此处添加构造函数逻辑 // } /// <summary> /// 合并单元格 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void Merge(Excel._Worksheet CurSheet,object objStartCell,object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).Merge(mValue); } /// <summary> /// 设置连续区域的字体大小 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="strStartCell">开始单元格</param> /// <param name="strEndCell">结束单元格</param> /// <param name="intFontSize">字体大小</param> public void SetFontSize(Excel._Worksheet CurSheet, object objStartCell, object objEndCell, int intFontSize) { CurSheet.get_Range(objStartCell, objEndCell).Font.Size = intFontSize.ToString(); } /// <summary> /// 横向打印 /// </summary> /// <param name="CurSheet"></param> public void xlLandscape(Excel._Worksheet CurSheet) { CurSheet.PageSetup.Orientation=Excel.XlPageOrientation.xlLandscape; } /// <summary> /// 纵向打印 /// </summary> /// <param name="CurSheet"></param> public void xlPortrait(Excel._Worksheet CurSheet) { CurSheet.PageSetup.Orientation=Excel.XlPageOrientation.xlPortrait; } /// <summary> /// 在指定单元格插入指定的值 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="Cell">单元格 如Cells[1,1]</param> /// <param name="objValue">文本、数字等值</param> public void WriteCell(Excel._Worksheet CurSheet,object objCell, object objValue) { CurSheet.get_Range(objCell, mValue).Value2 = objValue; } /// <summary> /// 在指定Range中插入指定的值 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="StartCell">开始单元格</param> /// <param name="EndCell">结束单元格</param> /// <param name="objValue">文本、数字等值</param> public void WriteRange(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, object objValue) { CurSheet.get_Range(objStartCell, objEndCell).Value2 = objValue; } /// <summary> /// 合并单元格,并在合并后的单元格中插入指定的值 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="objValue">文本、数字等值</param> public void WriteAfterMerge(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, object objValue) { CurSheet.get_Range(objStartCell, objEndCell).Merge(mValue); CurSheet.get_Range(objStartCell, mValue).Value2 = objValue; } /// <summary> /// 为单元格设置公式 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objCell">单元格</param> /// <param name="strFormula">公式</param> public void SetFormula(Excel._Worksheet CurSheet,object objCell, string strFormula) { CurSheet.get_Range(objCell, mValue).Formula = strFormula; } /// <summary> /// 单元格自动换行 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void AutoWrapText(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell,objEndCell).WrapText=true; } /// <summary> /// 设置整个连续区域的字体颜色 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="clrColor">颜色</param> public void SetColor(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, System.Drawing.Color clrColor) { CurSheet.get_Range(objStartCell, objEndCell).Font.Color = System.Drawing.ColorTranslator.ToOle(clrColor); } /// <summary> /// 设置整个连续区域的单元格背景色 /// </summary> /// <param name="CurSheet"></param> /// <param name="objStartCell"></param> /// <param name="objEndCell"></param> /// <param name="clrColor"></param> public void SetBgColor(Excel._Worksheet CurSheet, object objStartCell, object objEndCell, System.Drawing.Color clrColor) { CurSheet.get_Range(objStartCell, objEndCell).Interior.Color = System.Drawing.ColorTranslator.ToOle(clrColor); } /// <summary> /// 设置连续区域的字体名称 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="fontname">字体名称 隶书、仿宋_GB2312等</param> public void SetFontName(Excel._Worksheet CurSheet,object objStartCell, object objEndCell,string fontname) { CurSheet.get_Range(objStartCell, objEndCell).Font.Name=fontname; } /// <summary> /// 设置连续区域的字体为黑体 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void SetBold(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).Font.Bold = true; } /// <summary> /// 设置连续区域的边框:上下左右都为黑色连续边框 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void SetBorderAll(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeTop].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeTop].LineStyle = Excel.XlLineStyle.xlContinuous; CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeBottom].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeBottom].LineStyle = Excel.XlLineStyle.xlContinuous; CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeLeft].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeLeft].LineStyle = Excel.XlLineStyle.xlContinuous; CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeRight].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlEdgeRight].LineStyle = Excel.XlLineStyle.xlContinuous; CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlInsideHorizontal].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlInsideHorizontal].LineStyle = Excel.XlLineStyle.xlContinuous; CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlInsideVertical].Color = System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.LightGray); CurSheet.get_Range(objStartCell, objEndCell).Borders[Excel.XlBordersIndex.xlInsideVertical].LineStyle = Excel.XlLineStyle.xlContinuous; } /// <summary> /// 设置连续区域水平居中 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void SetHAlignCenter(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment = Excel.XlHAlign.xlHAlignCenter; } /// <summary> /// 设置连续区域水平居左 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void SetHAlignLeft(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment = Excel.XlHAlign.xlHAlignLeft; } /// <summary> /// 设置连续区域水平居右 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> public void SetHAlignRight(Excel._Worksheet CurSheet,object objStartCell, object objEndCell) { CurSheet.get_Range(objStartCell, objEndCell).HorizontalAlignment=Excel.XlHAlign.xlHAlignRight; } /// <summary> /// 设置连续区域的显示格式 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="strNF">如"#,##0.00"的显示格式</param> public void SetNumberFormat(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, string strNF) { CurSheet.get_Range(objStartCell, objEndCell).NumberFormat = strNF; } /// <summary> /// 设置列宽 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="strColID">列标识,如A代表第一列</param> /// <param name="dblWidth">宽度</param> public void SetColumnWidth(Excel._Worksheet CurSheet,string strColID, double dblWidth) { ((Excel.Range)CurSheet.Columns.GetType().InvokeMember("Item",System.Reflection.BindingFlags.GetProperty, null, CurSheet.Columns,new object[]{(strColID + ":" + strColID).ToString()})).ColumnWidth = dblWidth; } /// <summary> /// 设置列宽 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="dblWidth">宽度</param> public void SetColumnWidth(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, double dblWidth) { CurSheet.get_Range(objStartCell,objEndCell).ColumnWidth=dblWidth; } /// <summary> /// 设置行高 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objStartCell">开始单元格</param> /// <param name="objEndCell">结束单元格</param> /// <param name="dblHeight">行高</param> public void SetRowHeight(Excel._Worksheet CurSheet,object objStartCell, object objEndCell, double dblHeight) { CurSheet.get_Range(objStartCell,objEndCell).RowHeight=dblHeight; } /// <summary> /// 为单元格添加超级链接 /// </summary> /// <param name="CurSheet">Worksheet</param> /// <param name="objCell">单元格</param> /// <param name="strAddress">链接地址</param> /// <param name="strTip">屏幕提示</param> /// <param name="strText">链接文本</param> public void AddHyperLink(Excel._Worksheet CurSheet,object objCell, string strAddress, string strTip, string strText) { CurSheet.Hyperlinks.Add(CurSheet.get_Range(objCell, objCell),strAddress, mValue, strTip, strText); } /// <summary> /// 另存为xls文件 /// </summary> /// <param name="CurBook">Workbook</param> /// <param name="strFilePath">文件路径</param> public void Save(Excel._Workbook CurBook,string strFilePath) { CurBook.SaveCopyAs(strFilePath); } /// <summary> /// 保存文件 /// </summary> /// <param name="CurBook">Workbook</param> /// <param name="strFilePath">文件路径</param> public void SaveAs(Excel._Workbook CurBook,string strFilePath) { CurBook.SaveAs(strFilePath, mValue, mValue, mValue, mValue, mValue, Excel.XlSaveAsAccessMode.xlShared, mValue, mValue, mValue, mValue, mValue); } /// <summary> /// 另存为html文件 /// </summary> /// <param name="CurBook">Workbook</param> /// <param name="strFilePath">文件路径</param> public void SaveHtml(Excel._Workbook CurBook,string strFilePath) { CurBook.SaveAs(strFilePath, Excel.XlFileFormat.xlHtml, mValue, mValue, mValue, mValue, Excel.XlSaveAsAccessMode.xlNoChange, mValue, mValue, mValue, mValue, mValue); } /// <summary> /// 释放内存 /// </summary> public void Dispose(Excel._Worksheet CurSheet,Excel._Workbook CurBook,Excel._Application CurExcel) { try { System.Runtime.InteropServices.Marshal.ReleaseComObject(CurSheet); CurSheet = null; CurBook.Close(false, mValue, mValue); System.Runtime.InteropServices.Marshal.ReleaseComObject(CurBook); CurBook = null; CurExcel.Quit(); System.Runtime.InteropServices.Marshal.ReleaseComObject(CurExcel); CurExcel = null; GC.Collect(); GC.WaitForPendingFinalizers(); } catch(System.Exception ex) { HttpContext.Current.Response.Write( "在释放Excel内存空间时发生了一个错误:"+ex); } finally { foreach(System.Diagnostics.Process pro in System.Diagnostics.Process.GetProcessesByName("Excel")) //if (pro.StartTime < DateTime.Now) pro.Kill(); } System.GC.SuppressFinalize(this); } } |
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