【转贴】DataGrid输出到Excel并进行格式化处理
在我们把DataGrid上的数据导入到Excel的时候,如果遇到比较长的数字字符串,比如身份证号码,就会在Excel里当成数字看待,并转换成科学计数法的格式,造成数据的丢失,下面这个方法就解决了这个问题,并示例如何进行其它的格式化。
查看例子:http://dotnet.aspx.cc/Exam/OutPutExcel.aspx
OutPutExcel.aspx
1 <%@ Page language="c#" Codebehind="OutPutExcel.aspx.cs" AutoEventWireup="false" Inherits="eMeng.Exam.OutPutExcel" %>
2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
3 <HTML>
4 <HEAD>
5 <title>OutPutExcel</title>
6 </HEAD>
7 <body>
8 <form id="Form1" method="post" runat="server">
9 <asp:DataGrid id="DataGrid1" runat="server"></asp:DataGrid>
10 <asp:Button id="Button1" runat="server" Text="输出到Excel"></asp:Button>
11 </form>
12 </body>
13 </HTML>
14
OutPutExcel.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
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namespace eMeng.Exam
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{
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/**//// <summary>
/// OutPutExcel 的摘要说明。
/// </summary>
public class OutPutExcel : System.Web.UI.Page
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{
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
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private void Page_Load(object sender, System.EventArgs e)
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{
// 在此处放置用户代码以初始化页面
DataGrid1.DataSource=CreateDataSource();
DataGrid1.DataBind();
}
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/**//// <summary>
/// 创建数据源
/// </summary>
/// <returns>DataView</returns>
ICollection CreateDataSource()
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{
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DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("身份证号码", typeof(string)));
dt.Columns.Add(new DataColumn("图书单价",typeof(decimal)));
dt.Columns.Add(new DataColumn("购买数量",typeof(Int32)));
dt.Columns.Add(new DataColumn("总价格",typeof(decimal)));
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for (int i = 0; i < 30; i++)
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{
dr = dt.NewRow();
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dr[0] = "123456789123456789";
dr[1] = 100 * i /3.0;
dr[2] = i + 5;
dr[3] = (decimal)dr[1] * (Int32)dr[2];
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
return dv;
}
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/**//// <summary>
/// 输出到Excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Button1_Click(object sender, System.EventArgs e)
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{
Response.Clear();
Response.Buffer= true;
Response.Charset="GB2312";
Response.AppendHeader("Content-Disposition","attachment;filename=FileName.xls");
Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
this.EnableViewState = false;
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN",true);
System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.DataGrid1.RenderControl(oHtmlTextWriter);
Response.Write(oStringWriter.ToString());
Response.End();
}
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Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
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{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
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/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
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{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
this.Load += new System.EventHandler(this.Page_Load);
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}
#endregion
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private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
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{
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
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{
e.Item.Cells[0].Attributes.Add("style","vnd.ms-excel.numberformat:@");
e.Item.Cells[3].Attributes.Add("style","vnd.ms-excel.numberformat:¥#,###.00");
}
}
}
}