asp.net输出Excel

最新推荐文章于 2022-08-23 10:15:05 发布

saintjackson

最新推荐文章于 2022-08-23 10:15:05 发布

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文章标签： asp.net datagrid button excel object html

本文介绍了一个简单的ASP.NET Web应用程序示例，用于将数据网格中的数据导出到Excel文件。通过C#代码实现，包括创建数据源、格式化单元格及响应头设置等关键步骤。

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<%@ Page language="c#" Codebehind="OutPutExcel.aspx.cs"
AutoEventWireup="false" Inherits="eMeng.Exam.OutPutExcel" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
  <title>OutPutExcel</title>
</HEAD>
<body>
  <form id="Form1" method="post" runat="server">
   <asp:DataGrid id="DataGrid1" runat="server"></asp:DataGrid>
   <asp:Button id="Button1" runat="server" Text="输出到Excel"></asp:Button>
  </form>
</body>
</HTML>

代码

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;

namespace eMeng.Exam
{
/// <summary>
/// OutPutExcel 的摘要说明。
/// </summary>
public class OutPutExcel : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.DataGrid DataGrid1;

  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
   DataGrid1.DataSource=CreateDataSource();
   DataGrid1.DataBind();
  }
  /// <summary>
  /// 创建数据源
  /// </summary>
  /// <returns>DataView</returns>
  ICollection CreateDataSource()
  {

   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)));

   for (int i = 0; i < 30; i++)
   {
    dr = dt.NewRow();

    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;
  }
  /// <summary>
  /// 输出到Excel
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void Button1_Click(object sender, System.EventArgs e)
  {
   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();
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }

  /// <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()
  {
   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);

}
#endregion

  private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
   {
    e.Item.Cells[0].Attributes.Add("style","vnd.ms-excel.numberformat:@");
    e.Item.Cells[3].Attributes.Add("style","vnd.ms-excel.numberformat:￥#,###.00");
   }
  }
}
}