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1、引用NPOI；
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.UserModel;
2、导出excel
1 private void btnadd_MouseUp(object sender, MouseButtonEventArgs e) 2 { 3 try 4 { 5 #region 打印导出无统计数据 6 if (dt != null && dt.Rows.Count > 0) 7 { 8 //创建工作薄 9 HSSFWorkbook wb = new HSSFWorkbook(); 10 //创建一个名称为mySheet的表 11 ISheet sh = wb.CreateSheet("mySheet"); 12 #region 设置表格内容 13 for (int i = 0; i < dt.Rows.Count; i++) 14 { 15 SetRow(wb, sh, i * 2);//设置表头 16 IRow row = sh.CreateRow(i * 2 + 1); 17 for (int j = 2; j < dt.Columns.Count - 7; j++) 18 { 19 if (j < 4) 20 { 21 string content = dt.Rows[i][j].ToString(); 22 ICell cell = row.CreateCell(j - 2); 23 cell.SetCellValue(content); 24 } 25 else if (j > 4) 26 { 27 string content = dt.Rows[i][j].ToString(); 28 ICell cell = row.CreateCell(j - 3); 29 cell.SetCellValue(content); 30 } 31 } 32 } 33 string saveFileName = "人员工资表.xls"; 34 //FileStream fs=new FileStream(); 35 SaveFileDialog saveDialog = new SaveFileDialog(); 36 saveDialog.DefaultExt = "xls"; 37 saveDialog.Filter = "Excel文件|*.xls"; 38 saveDialog.FileName = saveFileName; 39 saveDialog.ShowDialog(); 40 saveFileName = saveDialog.FileName; 41 if (saveFileName.IndexOf(":") < 0) return; //被点了取消 42 if (saveFileName != "") 43 { 44 using (FileStream fs = File.OpenWrite(saveDialog.FileName))//打开一个xls文件，如果没有则自行创建，如果存在myxls.xls文件则在创建是不要打开该文件 45 { 46 try 47 { 48 wb.Write(fs); 49 MessageBox.Show("导出成功！", "提示", MessageBoxButton.OK, MessageBoxImage.Asterisk); 50 } 51 catch (Exception ex) 52 { 53 MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message, "提示", MessageBoxButton.OK, MessageBoxImage.Error); 54 } 55 fs.Flush(); 56 fs.Dispose(); 57 fs.Close(); 58 } 59 } 60 else 61 { 62 MessageBox.Show("请选择数据源！"); 63 } 64 #endregion 65 } 66 else 67 { 68 MessageBox.Show("请选择数据源！"); 69 } 70 #endregion 71 } 72 catch (Exception ex) 73 { 74 MessageBox.Show(ex.Message, "提示", MessageBoxButton.OK, MessageBoxImage.Error); 75 } 76 }
3、导入excel
1 private void btnexport_MouseUp(object sender, MouseButtonEventArgs e) 2 { 3 try 4 { 5 string str = ""; 6 string Error = ""; 7 OpenFileDialog of = new OpenFileDialog(); 8 of.DefaultExt = "xls"; 9 of.Filter = "Excel文件|*.xls"; 10 of.ShowDialog(); 11 if (string.IsNullOrEmpty(of.FileName)) 12 { 13 return; 14 } 15 if (of.CheckFileExists == true) //路径存在 16 { 17 string path = of.FileName; 18 using (FileStream fs = File.OpenRead(path)) //打开myxls.xls文件 19 { 20 HSSFWorkbook wk = new HSSFWorkbook(fs); //把xls文件中的数据写入wk中 21 #region 验证 22 for (int i = 0; i < wk.NumberOfSheets; i++) //NumberOfSheets是myxls.xls中总共的表数 23 { 24 ISheet sheet = wk.GetSheetAt(i); //读取当前表数据 25 for (int j = 1; j <= sheet.LastRowNum; j++) //LastRowNum 是当前表的总行数 26 { 27 IRow row = sheet.GetRow(j); //读取当前行数据 28 if (row != null) 29 { 30 for (int k = 0; k <= row.LastCellNum; k++) //LastCellNum 是当前行的总列数 31 { 32 if (k > 29) 33 { 34 break; 35 } 36 ICell cell = row.GetCell(k); //当前表格 37 if (cell != null) 38 { 39 string content = cell.ToString(); 40 #region 验证 41 42 if (k > 3 && k < 30) 43 { 44 if (!new System.Text.RegularExpressions.Regex(@"^(([1-9]{1}\d*)|([0]{1}))(\.(\d){1,2})?$").IsMatch(content.Trim())) 45 { 46 Error += "表" + (i + 1) + "行" + (j + 1) + "列" + (k + 1) + "中有非法字符;\r\n"; 47 } 48 } 49 else if (k == 1) 50 { 51 if (!new System.Text.RegularExpressions.Regex(@"^(([1-9]{1}\d*)|([0]{1}))(\.(\d){1,2})?$").IsMatch(content.Trim())) 52 { 53 Error += "表" + (i + 1) + "行" + (j + 1) + "列" + (k + 1) + "中有非法字符;\r\n"; 54 } 55 } 56 #endregion 57 } 58 } 59 } 60 } 61 } 62 if (Error.Length > 0) 63 { 64 MessageBox.Show(Error + "请验证！", "提示", MessageBoxButton.OK, MessageBoxImage.Error); 65 return; 66 } 67 68 #endregion 69 70 for (int i = 0; i < wk.NumberOfSheets; i++) //NumberOfSheets是myxls.xls中总共的表数 71 { 72 ISheet sheet = wk.GetSheetAt(i); //读取当前表数据 73 string depid = ""; 74 string userid = ""; 75 string deptname = ""; 76 for (int j = 1; j <= sheet.LastRowNum; j++) //LastRowNum 是当前表的总行数 77 { 78 IRow row = sheet.GetRow(j); //读取当前行数据 79 if (row != null) 80 { 81 str = str + "insert into wage(depid,depname,mon,userid,username,code,gwgz,xl,jishu,zili,jbgz,gl,weisheng,menzhen,tizu,zjjt,jiaotong,zinv,zbbt,jixiao,bufa,ycxj,yjlgz,yfhj,jfz,baoyang,yibao,shiye,fangjin,nianjin,nashui,sfgz,createdate) values("; 82 for (int k = 0; k <= row.LastCellNum; k++) //LastCellNum 是当前行的总列数 83 { 84 if (k > 29) 85 { 86 break; 87 } 88 ICell cell = row.GetCell(k); //当前表格 89 if (cell != null) 90 { 91 string content = cell.ToString(); 92 93 #region 验证 94 if (!string.IsNullOrEmpty(content)) 95 { 96 if (k == 0) 97 { 98 string sql = @"select depid,userid from wage where depname=‘" + content + "‘"; 99 DataSet ds = new DataBase().GetDataSet(sql); 100 DataTable newDT = ds.Tables[0]; 101 depid = newDT.Rows[0][0].ToString(); 102 userid = newDT.Rows[0][1].ToString(); 103 if (string.IsNullOrEmpty(depid)) 104 { 105 depid = "99999"; 106 } 107 if (string.IsNullOrEmpty(userid)) 108 { 109 userid = "1122222"; 110 } 111 deptname = content; 112 str = str + "" + depid + ",‘" + deptname + "‘,"; 113 } 114 else 115 { 116 if (k == 1) 117 { str = str + content + ","; } 118 else if (k == 2) 119 { 120 str = str + "" + userid + ",‘" + content + "‘,"; 121 } 122 else 123 { 124 if (k > 3) 125 { 126 if (!new System.Text.RegularExpressions.Regex(@"^(([1-9]{1}\d*)|([0]{1}))(\.(\d){1,2})?$").IsMatch(content.Trim())) 127 { 128 MessageBox.Show("文件数据内有非数字，请修改！"); 129 } 130 else 131 { 132 str = str + "‘" + content + "‘,"; 133 } 134 } 135 else 136 { 137 str = str + "‘" + content + "‘,"; 138 } 139 } 140 } 141 } 142 else 143 { 144 MessageBox.Show("文件内有空数据，请重新导入！"); 145 } 146 #endregion 147 if (i == sheet.LastRowNum - 2) 148 { 149 break; 150 } 151 } 152 else 153 { 154 MessageBox.Show("文件为空，请重新导入！"); 155 } 156 } 157 //str = str.ToString().Substring(0, str.Length - 1); 158 str = str + "‘" + DateTime.Now + "‘"; 159 str = str + ");"; 160 } 161 int result = new DataBase().ExecuteSQL(str); 162 str = ""; 163 } 164 } 165 MessageBox.Show("导入成功", "提示", MessageBoxButton.OK, MessageBoxImage.Asterisk); 166 //重新绑定 167 BindData(int.Parse(common.SelectedValue.ToString())); 168 } 169 } 170 else 171 { 172 MessageBox.Show("文件不存在", "提示", MessageBoxButton.OK, MessageBoxImage.Error); 173 } 174 } 175 catch (Exception ex) 176 { 177 MessageBox.Show(ex.Message, "提示", MessageBoxButton.OK, MessageBoxImage.Error); 178 } 179 180 }
4、公共方法
1 /// <summary> 2 /// 打印导出表头 3 /// </summary> 4 /// <param name="wb"></param> 5 /// <param name="sh"></param> 6 /// <param name="num"></param> 7 /// <returns></returns> 8 public IRow SetRow(HSSFWorkbook wb, ISheet sh, int num) 9 { 10 #region 设置表头 11 IRow row1 = sh.CreateRow(num); 12 row1.Height = 22 * 22; 13 ICell icell1top = row1.CreateCell(0); 14 icell1top.CellStyle = Getcellstyle(wb, stylexls.头); 15 icell1top.SetCellValue("部门"); 16 ICell icell2top = row1.CreateCell(1); 17 icell2top.CellStyle = Getcellstyle(wb, stylexls.头); 18 icell2top.SetCellValue("月份"); 19 ICell icell3top = row1.CreateCell(2); 20 icell3top.CellStyle = Getcellstyle(wb, stylexls.头); 21 icell3top.SetCellValue("职员"); 22 ICell icell4top = row1.CreateCell(3); 23 icell4top.CellStyle = Getcellstyle(wb, stylexls.头); 24 icell4top.SetCellValue("人员编码"); 25 ICell icell5top = row1.CreateCell(4); 26 icell5top.CellStyle = Getcellstyle(wb, stylexls.头); 27 icell5top.SetCellValue("岗位工资"); 28 ICell icell6top = row1.CreateCell(5); 29 icell6top.CellStyle = Getcellstyle(wb, stylexls.头); 30 icell6top.SetCellValue("学历"); 31 ICell icell7top = row1.CreateCell(6); 32 icell7top.CellStyle = Getcellstyle(wb, stylexls.头); 33 icell7top.SetCellValue("技术"); 34 ICell icell8top = row1.CreateCell(7); 35 icell8top.CellStyle = Getcellstyle(wb, stylexls.头); 36 icell8top.SetCellValue("资历"); 37 ICell icell9top = row1.CreateCell(8); 38 icell9top.CellStyle = Getcellstyle(wb, stylexls.头); 39 icell9top.SetCellValue("基本工资"); 40 ICell icell10top = row1.CreateCell(9); 41 icell10top.CellStyle = Getcellstyle(wb, stylexls.头); 42 icell10top.SetCellValue("工龄"); 43 ICell icell11top = row1.CreateCell(10); 44 icell11top.CellStyle = Getcellstyle(wb, stylexls.头); 45 icell11top.SetCellValue("卫生"); 46 ICell icell12top = row1.CreateCell(11); 47 icell12top.CellStyle = Getcellstyle(wb, stylexls.头); 48 icell12top.SetCellValue("门诊"); 49 ICell icell13top = row1.CreateCell(12); 50 icell13top.CellStyle = Getcellstyle(wb, stylexls.头); 51 icell13top.SetCellValue("提租"); 52 ICell icell14top = row1.CreateCell(13); 53 icell14top.CellStyle = Getcellstyle(wb, stylexls.头); 54 icell14top.SetCellValue("专家津贴"); 55 ICell icell15top = row1.CreateCell(14); 56 icell15top.CellStyle = Getcellstyle(wb, stylexls.头); 57 icell15top.SetCellValue("专家交通"); 58 ICell icell16top = row1.CreateCell(15); 59 icell16top.CellStyle = Getcellstyle(wb, stylexls.头); 60 icell16top.SetCellValue("子女"); 61 ICell icell17top = row1.CreateCell(16); 62 icell17top.CellStyle = Getcellstyle(wb, stylexls.头); 63 icell17top.SetCellValue("值班补贴"); 64 ICell icell18top = row1.CreateCell(17); 65 icell18top.CellStyle = Getcellstyle(wb, stylexls.头); 66 icell18top.SetCellValue("绩效"); 67 ICell icell19top = row1.CreateCell(18); 68 icell19top.CellStyle = Getcellstyle(wb, stylexls.头); 69 icell19top.SetCellValue("补发"); 70 ICell icell20top = row1.CreateCell(19); 71 icell20top.CellStyle = Getcellstyle(wb, stylexls.头); 72 icell20top.SetCellValue("一次性奖"); 73 ICell icell21top = row1.CreateCell(20); 74 icell21top.CellStyle = Getcellstyle(wb, stylexls.头); 75 icell21top.SetCellValue("月奖励工资"); 76 ICell icell22top = row1.CreateCell(21); 77 icell22top.CellStyle = Getcellstyle(wb, stylexls.头); 78 icell22top.SetCellValue("应发合计"); 79 ICell icell23top = row1.CreateCell(22); 80 icell23top.CellStyle = Getcellstyle(wb, stylexls.头); 81 icell23top.SetCellValue("局租房"); 82 ICell icell24top = row1.CreateCell(23); 83 icell24top.CellStyle = Getcellstyle(wb, stylexls.头); 84 icell24top.SetCellValue("保养"); 85 ICell icell25top = row1.CreateCell(24); 86 icell25top.CellStyle = Getcellstyle(wb, stylexls.头); 87 icell25top.SetCellValue("医保"); 88 ICell icell26top = row1.CreateCell(25); 89 icell26top.CellStyle = Getcellstyle(wb, stylexls.头); 90 icell26top.SetCellValue("失业"); 91 ICell icell27top = row1.CreateCell(26); 92 icell27top.CellStyle = Getcellstyle(wb, stylexls.头); 93 icell27top.SetCellValue("房金"); 94 ICell icell28top = row1.CreateCell(27); 95 icell28top.CellStyle = Getcellstyle(wb, stylexls.头); 96 icell28top.SetCellValue("年金"); 97 ICell icell29top = row1.CreateCell(28); 98 icell29top.CellStyle = Getcellstyle(wb, stylexls.头); 99 icell29top.SetCellValue("纳税"); 100 ICell icell30top = row1.CreateCell(29); 101 icell30top.CellStyle = Getcellstyle(wb, stylexls.头); 102 icell30top.SetCellValue("实发工资"); 103 #endregion 104 return row1; 105 }
1 #region 定义单元格常用到样式的枚举 2 public enum stylexls 3 { 4 头, 5 url, 6 时间, 7 数字, 8 钱, 9 百分比, 10 中文大写, 11 科学计数法, 12 默认 13 } 14 #endregion 15 #region 定义单元格常用到的样式 16 static ICellStyle Getcellstyle(IWorkbook wb, stylexls str) 17 { 18 ICellStyle cellStyle = wb.CreateCellStyle(); 19 20 //定义几种字体 21 //也可以一种字体，写一些公共属性，然后在下面需要时加特殊的 22 IFont font12 = wb.CreateFont(); 23 font12.FontHeightInPoints = 10; 24 font12.FontName = "微软雅黑"; 25 26 27 IFont font = wb.CreateFont(); 28 font.FontName = "微软雅黑"; 29 //font.Underline = 1;下划线 30 31 32 IFont fontcolorblue = wb.CreateFont(); 33 fontcolorblue.Color = HSSFColor.OliveGreen.Blue.Index; 34 fontcolorblue.IsItalic = true;//下划线 35 fontcolorblue.FontName = "微软雅黑"; 36 37 38 //边框 39 cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin; 40 cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin; 41 cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin; 42 cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin; 43 //水平对齐 44 cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Left; 45 46 //垂直对齐 47 cellStyle.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center; 48 49 //自动换行 50 cellStyle.WrapText = true; 51 52 //缩进;当设置为1时，前面留的空白太大了。希旺官网改进。或者是我设置的不对 53 cellStyle.Indention = 0; 54 55 //上面基本都是设共公的设置 56 //下面列出了常用的字段类型 57 switch (str) 58 { 59 case stylexls.头: 60 // cellStyle.FillPattern = FillPatternType.LEAST_DOTS; 61 cellStyle.SetFont(font12); 62 break; 63 case stylexls.时间: 64 IDataFormat datastyle = wb.CreateDataFormat(); 65 66 cellStyle.DataFormat = datastyle.GetFormat("yyyy/mm/dd"); 67 cellStyle.SetFont(font); 68 break; 69 case stylexls.数字: 70 cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00"); 71 cellStyle.SetFont(font); 72 break; 73 case stylexls.钱: 74 IDataFormat format = wb.CreateDataFormat(); 75 cellStyle.DataFormat = format.GetFormat("￥#,##0"); 76 cellStyle.SetFont(font); 77 break; 78 case stylexls.百分比: 79 cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00%"); 80 cellStyle.SetFont(font); 81 break; 82 case stylexls.中文大写: 83 IDataFormat format1 = wb.CreateDataFormat(); 84 cellStyle.DataFormat = format1.GetFormat("[DbNum2][$-804]0"); 85 cellStyle.SetFont(font); 86 break; 87 case stylexls.科学计数法: 88 cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00E+00"); 89 cellStyle.SetFont(font); 90 break; 91 case stylexls.默认: 92 cellStyle.SetFont(font); 93 break; 94 } 95 return cellStyle; 96 97 98 } 99 #endregion
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原文地址：http://www.cnblogs.com/chiyueqi/p/5497473.html
