文件下载到excel文件的代码.txt

学习积累的代码段

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");
			}
		}
	}
}