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ASP.NET 导出到Excel时保留换行的代码

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完整代码: 
复制代码代码如下:

<%@ Page Language="C#" Trace="false" AutoEventWireup="true" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<script runat="server"> 
protected void Button1_Click(object sender, EventArgs e) 

System.Web.HttpContext curContext = System.Web.HttpContext.Current; 
// IO用于导出并返回excel文件 
System.IO.StringWriter strWriter = null; 
System.Web.UI.HtmlTextWriter htmlWriter = null; 
// 设置编码和附件格式 
HttpContext.Current.Response.Clear(); 
HttpContext.Current.Response.Buffer = true; 
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "aaa.xls")); 
curContext.Response.ContentType = "application/vnd.ms-excel"; 
curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB18030"); 
curContext.Response.Charset = ""; 
// 导出excel文件 
strWriter = new System.IO.StringWriter(); 
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter); 
htmlWriter.WriteLine("标题"); 
// 返回客户端 
GridView1.RenderControl(htmlWriter); 
curContext.Response.Write(strWriter.ToString().Replace("<br/>", "<br style='mso-data-placement:same-cell;'/> ")); 
curContext.Response.End(); 

protected void Page_Load(object sender, EventArgs e) 

if (!Page.IsPostBack) 

GridView1.DataSource = CreateDataSourceByXianhuiMeng(); 
GridView1.DataBind(); 


System.Data.DataView CreateDataSourceByXianhuiMeng() 

System.Data.DataTable dt = new System.Data.DataTable(); 
System.Data.DataRow dr; 
dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String))); 
dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String))); 
dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal))); 
dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal))); 
dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal))); 
dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal))); 
for (int i = 0; i < 8; i++) 

System.Random rd = new System.Random(Environment.TickCount * i); ; 
dr = dt.NewRow(); 
dr[0] = "班级" + i.ToString(); 
dr[1] = "学生姓名:孟子E章" + i.ToString() + "<br/>所在班级:" + "班级" + i.ToString(); 
dr[2] = System.Math.Round(rd.NextDouble() * 100, 2); 
dr[3] = System.Math.Round(rd.NextDouble() * 100, 2); 
dr[4] = System.Math.Round(rd.NextDouble() * 100, 2); 
dr[5] = System.Math.Round(rd.NextDouble() * 100, 2); 
dt.Rows.Add(dr); 

System.Data.DataView dv = new System.Data.DataView(dt); 
return dv; 

public override void VerifyRenderingInServerForm(Control control) 
{ } 
</script> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server"> 
<title>无标题页</title> 
</head> 
<body> 
<form id="form1" runat="server"> 
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"> 
<Columns> 
<asp:BoundField HtmlEncode="false" DataField="学生姓名" HeaderText="测试字段" /> 
</Columns> 
</asp:GridView> 
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /> 
</form> 
</body> 
</html>

要查阅 Excel 中使用的样式规范,请参考:Microsoft® Office HTML and XML Reference.

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