ASP.NET页面内容导出为Excel
这几天给公司的客户做了一个系统的报表的导出，现在总结一下
一、需要注意的是：
1.页面内容中如果有多张Table,导出到Excel是表格列宽会失效。
2.设置表格的属性为字符串加上x:str="",如<table x:str=""></table>，不加默认是数值，0005导出后会转换为数字5(x:str=""在单元格中指定无效)
3.如果导出的内容为数据要在表格属性上加上x:num=""，如<td style=" width: 54pt;" x:num="" align="center">
4.设置ASPX页面属性ValidateRequest="false"
二、下面是代码，CS页代码
Code1
Public Sub ExportToExcel()Sub ExportToExcel(ByVal htmlString As Object)2
Response.Clear()3
Response.Buffer = True4
Dim fileName As String = "化学月报"5
Dim strb As New StringBuilder()6
'显示Excel中的网格线7
strb.Append("<html xmlns='http://www.w3.org/1999/xhtml' xmlns:x='urn:schemas-microsoft-com:office:excel'>")8
9
10
strb.Append("<head>")11
12
strb.Append("<!--[if gte mso 9]><xml>")13
14
strb.Append("<x:ExcelWorkbook>")15
16
strb.Append("<x:ExcelWorksheets>")17
18
strb.Append("<x:ExcelWorksheet>")19
20
strb.Append("<x:Name>化学月报</x:Name>")21
22
strb.Append("<x:WorksheetOptions>")23
24
strb.Append("<x:Print>")25
strb.Append("<x:ValidPrinterInfo/>")26
27
strb.Append("</x:Print>")28
29
strb.Append("</x:WorksheetOptions>")30
31
strb.Append("</x:ExcelWorksheet>")32
33
strb.Append("</x:ExcelWorksheets>")34
35
strb.Append("</x:ExcelWorkbook>")36
37
strb.Append("</xml>")38
39
strb.Append("<![endif]--> ")40
41
strb.Append("</head>")42
43
strb.Append("<body>")44
'添加页面内容45
strb.Append(CStr(htmlString))46
47
strb.Append("</body></html>")48
49
Response.AppendHeader("content-disposition", "attachment;filename=" & System.Web.HttpUtility.UrlEncode(fileName & "", System.Text.Encoding.UTF8) + ".xls")50
'设置编码51
Response.Charset = "GB2312"52
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312")53
54
Response.ContentType = "application/vnd.ms-excel"55
Response.Charset = Nothing56
Response.Write(strb)57
58
Response.End()59
End Sub60
61
Protected Sub toExcel_btn_Click()Sub toExcel_btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles toExcel_btn.Click62
ExportToExcel(Value_hid.Value)63
End Sub
三、ASPX页面内容（通过脚本获取HTML代码）
Code1
<%
@ Page Language="VB" AutoEventWireup="false" CodeFile="ToExcel.aspx.vb" Inherits="ToExcel" ValidateRequest="false" %>2
3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>无标题页</title>8
<script type="text/javascript">9
10
function getHtml()11
{12
//获取报表主体部分的HTML代码13
document.getElementById("Value_hid").value=document.getElementById("Report_div").outerHTML;14
15
}16
17
18
</script>19
</head>20
<%--body中设置，页面加载完后执行getHtml()--%>21
<body onload="getHtml()">22
<form id="form1" runat="server">23
<div>24
<asp:Button ID="toExcel_btn" runat="server" Text="导出为Excel" /><br />25
<%--要导出到Excel中的内容--%>26
<div id="Report_div" >27
<table x:str="">28
<tr>29
<td style="width: 200px">30
宽度200px</td>31
<td style="width: 100px">32
数字</td>33
<td style="width: 100px">34
字符串格式的数字</td>35
</tr>36
<tr>37
<td style="width: 200px; height: 21px;">38
</td>39
<td style="width: 100px; height: 21px;" x:num="">40
0005</td>41
<td style="width: 100px; height: 21px;">42
0005</td>43
44
</tr>45
<tr>46
<td style="width: 200px">47
</td>48
<td style="width: 100px">49
导出后为5</td>50
<td style="width: 100px" >51
导出后还是为0005</td>52
53
</tr>54
</table>55
</div>56
57
<%--隐藏控件--%> 58
<input id="Value_hid" type="hidden" runat="server"/>59
</div>60
</form>61
</body>62
</html>63
四、页面
五、导出后的Excel
