1）建立web應用程式
2）添加類StudentDemo.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication18
{
public class StudentDemo
{
public StudentDemo(int _studentID, string _studentName, int _classID)
{
this.studentID = _studentID;
this.studentName = _studentName;
this.classID = _classID;
}
private int studentID;//學生編号
public int StudentID
{
get { return studentID; }
set { studentID = value; }
}
private string studentName;//學生姓名
public string StudentName
{
get { return studentName; }
set { studentName = value; }
}
private int classID;//班級編号
public int ClassID
{
get { return classID; }
set { classID = value; }
}
}
}
2）添加web窗體 Default.aspx
1.前台
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication18._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvwStudents" runat="server">
</asp:GridView>
<asp:Button ID="Button1" runat="server" Text="儲存到excel" οnclick="btnExcel_Click" />
</div>
</form>
</body>
</html>
2.背景
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication18
{
public partial class _Default : System.Web.UI.Page
{
private List<StudentDemo> allStudents;//所有學生
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SettingAllStudents();
BindStudents();
}
}
/// <summary>
/// 綁定所有使用者
/// </summary>
private void BindStudents()
{
gvwStudents.DataSource = allStudents;
gvwStudents.DataBind();
}
/// <summary>
/// gridview導出到excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnExcel_Click(object sender, EventArgs e)
{
//Excel
Response.Clear();
Response.Buffer = true;
Response.Charset = "utf-8";
Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//設定輸出流為簡體中文
Response.ContentType = "application/ms-excel";//設定輸出檔案類型為excel檔案。
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);
gvwStudents.RenderControl(oHtmlTextWriter);//gvwUsers是Gridview的ID名稱
Response.Write(oStringWriter.ToString());
Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
}
/// <summary>
/// 設定所有學生
/// </summary>
private void SettingAllStudents()
{
allStudents = new List<StudentDemo>();
for (int i = 1; i <= 9; i++)//一共有9個學生，i表示學生的編号
{
int j = 0;//學生所在編輯的編号
int k = 3;//每個班有3個人
if (i % k == 0) { j = i / k; }
else { j = i / k + 1; }
StudentDemo item = new StudentDemo(i, "張三" + i, j);
allStudents.Add(item);
}
}
}
}
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