方法一：用NPOI定义多级表头导出：
引用头：
using NPOI.DDF; using NPOI.OpenXmlFormats.Wordprocessing; using NPOI.HSSF.UserModel; using NPOI.SS.UserModel; using NPOI.SS.Util; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.IO; using System.Linq; using System.Linq.Expressions; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Web; using System.Web.UI.WebControls;
定义方法：
1 public bool OutPutIMOrEXRSTExcel(DataTable dt)
2 {
3 bool Result = false;
4 //在内存中生成一个Excel文件：
5 HSSFWorkbook book = new HSSFWorkbook();
6 ISheet sheet = book.CreateSheet("进出口退补税款统计表");
7
8 sheet.DefaultRowHeight = 20 * 10;
9
10 IRow row;
11 ICell cell;
12 int rowIndex = 0;
13 int StartColIndex = 0;
14 int colIndex = StartColIndex;
15
16 //创建表头样式
17 ICellStyle style = book.CreateCellStyle();
18 style.Alignment = HorizontalAlignment.Center;
19 style.WrapText = true;
20 IFont font = book.CreateFont();
21 font.FontHeightInPoints = 16;
22 font.Boldweight = (short)NPOI.SS.UserModel.FontBoldWeight.Bold;
23 font.FontName = "简体中文";
24 style.SetFont(font);//HEAD 样式
25
26
27 #region 定义表头
28 //合并单元格
29 int InOrEx = sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + 2, colIndex, colIndex));//进出口标志
30 var cellRangeAddress1 = sheet.GetMergedRegion(InOrEx);
31 for (int i = cellRangeAddress1.FirstRow; i <= cellRangeAddress1.LastRow; i++)
32 {
33 row = sheet.CreateRow(rowIndex);
34 //row.GetCell(0).CellStyle = style;
35
36 cell = row.CreateCell(colIndex);
37 }
38 row = sheet.GetRow(rowIndex);
39 cell = row.GetCell(colIndex);
40 cell.SetCellValue("进出口标志");
41
42 colIndex++;
43 sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, colIndex, colIndex + 2));
44 cell = row.CreateCell(colIndex);
45 cell.SetCellValue("纠错项数");
46
47 colIndex = colIndex + 3;
48 sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, colIndex, colIndex + 9));
49 cell = row.CreateCell(colIndex);
50 cell.SetCellValue("退补税额");
51
52 rowIndex++;
53
54 colIndex = StartColIndex + 1;
55 int involSup = sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + 1, colIndex, colIndex));//涉及补税
56 var cellRangeAddress4 = sheet.GetMergedRegion(involSup);
57 for (int j = cellRangeAddress4.FirstRow; j <= cellRangeAddress4.LastRow; j++)
58 {
59 row = sheet.CreateRow(rowIndex);
60 //row.GetCell(0).CellStyle = style;
61
62 cell = row.CreateCell(colIndex);
63 }
64 row = sheet.GetRow(rowIndex);
65 cell = row.GetCell(colIndex);
66 cell.SetCellValue("涉及补税");
67
68 colIndex++;
69 int involRef = sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + 1, colIndex, colIndex));//涉及退税
70 var cellRangeAddress5 = sheet.GetMergedRegion(involRef);
71 for (int j = cellRangeAddress5.FirstRow; j <= cellRangeAddress5.LastRow; j++)
72 {
73 cell = row.CreateCell(colIndex);
74 }
75 row = sheet.GetRow(rowIndex);
76 cell = row.GetCell(colIndex);
77 cell.SetCellValue("涉及退税");
78
79 colIndex++;
80 int NoRefSup = sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex + 1, colIndex, colIndex));//无退补税
81 var cellRangeAddress6 = sheet.GetMergedRegion(NoRefSup);
82 for (int j = cellRangeAddress6.FirstRow; j <= cellRangeAddress6.LastRow; j++)
83 {
84 cell = row.CreateCell(colIndex);
85 }
86 row = sheet.GetRow(rowIndex);
87 cell = row.GetCell(colIndex);
88 cell.SetCellValue("无退补税");
89
90
91 colIndex++;
92 sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, colIndex, colIndex + 4));
93 cell = row.CreateCell(colIndex);
94 cell.SetCellValue("补税");
95
96 colIndex = colIndex + 5;
97 sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, colIndex, colIndex + 4));
98 cell = row.CreateCell(colIndex);
99 cell.SetCellValue("退税");
100
101 //补税
102 rowIndex++;
103 row = sheet.CreateRow(rowIndex);
104 //row.GetCell(0).CellStyle = style;
105
106 colIndex = StartColIndex + 4;
107 cell = row.CreateCell(colIndex);
108 cell.SetCellValue("关税");
109
110 colIndex++;
111 cell = row.CreateCell(colIndex);
112 cell.SetCellValue("增值税");
113
114 colIndex++;
115 cell = row.CreateCell(colIndex);
116 cell.SetCellValue("消费税");
117
118 colIndex++;
119 cell = row.CreateCell(colIndex);
120 cell.SetCellValue("反倾销税");
121
122 colIndex++;
123 cell = row.CreateCell(colIndex);
124 cell.SetCellValue("协定关税");
125
126 //退税
127 colIndex++;
128 cell = row.CreateCell(colIndex);
129 cell.SetCellValue("关税");
130
131 colIndex++;
132 cell = row.CreateCell(colIndex);
133 cell.SetCellValue("增值税");
134
135 colIndex++;
136 cell = row.CreateCell(colIndex);
137 cell.SetCellValue("消费税");
138
139 colIndex++;
140 cell = row.CreateCell(colIndex);
141 cell.SetCellValue("反倾销税");
142
143 colIndex++;
144 cell = row.CreateCell(colIndex);
145 cell.SetCellValue("协定关税");
146 colIndex++;
147
148 #endregion
149
150 #region 定义表体并赋值
151 rowIndex++;
152 foreach (DataRow dr in dt.Rows)
153 {
154 colIndex = StartColIndex;
155 row = sheet.CreateRow(rowIndex);
156 foreach (DataColumn dc in dt.Columns)
157 {
158 cell = row.CreateCell(colIndex);
159 cell.SetCellValue(dr[colIndex].ToString());
160
161 colIndex++;
162 }
163 rowIndex++;
164 }
165 #endregion
166
167 //Excel 输出
168 string fileName = @"ExitClassifiedCorrectionReport.xls";
169 try
170 {
171 HttpResponse rs = System.Web.HttpContext.Current.Response;
172 rs.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
173 rs.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
174 rs.ContentType = "application/ms-excel";
175 using (MemoryStream ms = new MemoryStream())
176 {
177 book.Write(ms);
178 rs.BinaryWrite(ms.ToArray());
179 ms.Flush();
180 }
181 }
182 catch (Exception ex)
183 {
184 LogHelper.Write(ex);
185 }
186 return Result;
187 }
方法二：直接调用html代码导出table（适用于数据量较少的table）：
JS代码：
//导出table到Excel
function OutPutTab() {
var html = document.getElementById("myTable").outerHTML;
var shtml = htmlEncode(html);
$("input[name=‘hHtml‘]").val(shtml);
//表单提交
document.getElementById("OutPutTab").submit();
}
//html代码编码（否则报字符错误）
function htmlEncode(value) {
return $(‘<div/>‘).text(value).html();
}
后台导出代码：
/// <summary>
/// 下载统计表数据
/// </summary>
/// <param name="form"></param>
/// <returns></returns>
[HttpPost]
public FileResult ExportExcel(FormCollection form)
{
string strHtml = form["hHtml"];
strHtml = HttpUtility.HtmlDecode(strHtml);//Html解码
byte[] fileContents = Encoding.UTF8.GetBytes(strHtml);
return File(fileContents, "application/ms-excel", "CustomDistrictStructTAB.xls");
}
时间： 2024-08-29 07:31:58