解决Girdviewd导出Excel的相关问题博客分类： ASP.NET excelaspc#gridview

程序员文章站 2024-03-21 22:27:34

...

前台代码如下不多说：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" EnableEventValidation="false"%>
<!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>无标题页</title>
    <style type="text/css">
        #form1
        {
            height: 645px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
        AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333"
        GridLines="None" Height="234px"
        onpageindexchanging="GridView1_PageIndexChanging" Width="782px">
        <PagerSettings FirstPageText="首页" LastPageText="尾页"
            Mode="NextPreviousFirstLast" NextPageText="下一页" PreviousPageText="上一页" />
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
        <Columns>
            <asp:BoundField DataField="id" HeaderText="序号">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:BoundField DataField="StuId" HeaderText="学号">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:BoundField DataField="StuPwd" HeaderText="密码">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:BoundField DataField="StuName" HeaderText="姓名">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:BoundField DataField="StuCardId" HeaderText="身份证号">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:BoundField DataField="TeaName" HeaderText="任课教师">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
        </Columns>
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
        <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <EditRowStyle BackColor="#999999" />
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
    </asp:GridView>
    <br />
    <br />
    <asp:Button ID="Button1" runat="server" onclick="Button1_Click"
        Text="导出到Excel" />
    </form>
</body>
</html>

后台代码如下：注释很详细不再累赘

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;///添加数据库操作的命名空间
using System.IO;///添加输出操作的命名空间
public partial class _Default : System.Web.UI.Page
{
    /// <summary>
    /// 绑定Gridview 控件的数据
    /// </summary>
    /// <returns></returns>
    protected bool BindDB()
    {
        string sqlcon = ConfigurationManager.ConnectionStrings["DBString"].ConnectionString;
        SqlConnection con = new SqlConnection(sqlcon);
        con.Open();
        string strSelect = "select * from Student ";
        SqlDataAdapter sda = new SqlDataAdapter(strSelect,sqlcon);
        DataSet ds = new DataSet();
        sda.Fill(ds);
        GridView1.DataSource = ds;
        try
        {
            GridView1.DataBind();
            return true;
        }
        catch
        {
            return false;
        }
        finally
        {
            con.Close();
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindDB();///数据库绑定
        }
    }
    /// <summary>
    /// Gridview 分页操作没有分业的可以不添加此方法
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        BindDB();
    }
    /// <summary>
    /// Gridview数据导出到Excel的操作
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void Button1_Click(object sender, EventArgs e)
    {
        #region
        ///在导出的时候，如果某个字段为长数字（如身份证号码511922198507151512）、以0开头的编号（如0914490000）
        ///之类的数据。如果不加处理在导出的Excel文件中将会被分别当作5.11922E+17和809111212来处理，这样与我们要达到的
        ///实际效果不一致。所以我们要加以处理，即给单元格数据规定格式
        ///即我们在导出的时候把类型改掉
        //for (int i=0; i < GridView1.Rows.Count; i++)
        //{
        //    GridView1.Rows[i].Cells[4].Text = "'" + GridView1.Rows[i].Cells[4].Text;
        //}
        #endregion

        ///另一种方式就是
        ///解决思路:在Excel中作一个包含有"012457890"的内容,设定单元格的显示方式,然后保存成Html的文件,
        ///在查看源代码. 发现在 CSS格式定义中有:td{mso-number-format:"\@";}.这样问题就容易解决了.我用的此种方式

        GridView1.AllowPaging = false;///清除分页，便于导出数据
        BindDB(); ///绑定Griedview数据
        Response.ClearContent();
        Response.Charset = "GB2312"; ///设定输出的字符集
        string strStyle = "<style>td{mso-number-format:\"\\@\";}</style>"; ///设置输出格式

        ///解决导出到Excel2003乱码问题
        ///HttpUtility.UrlEncode("学生信息表.xls", System.Text.Encoding.UTF8).ToString())
        Response.AddHeader("content-disposition", "attachment; filename=" +
                           HttpUtility.UrlEncode("学生信息表.xls", System.Text.Encoding.UTF8).ToString());
        Response.ContentType = "application/excel"; ///设置导出文件的格式
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        sw.WriteLine(strStyle); ///读取格式

        ///GridView1.Columns[11].Visible = false; ///某一列Gridview数据不导出

        GridView1.RenderControl(htw);
        Response.Write(sw.ToString()); ///把HTML写回浏览器
        Response.End();
        GridView1.AllowPaging = true;///恢复分业
        BindDB();///绑定Griedview数据
    }
    /// <summary>
    /// 此方法一定要重载，否则报错！
    /// </summary>
    /// <param name="control"></param>
    public override void VerifyRenderingInServerForm(Control control)
    {
    }
}

主要解决了Gridview导出到Excel
图不会传。。。。

解决Girdviewd导出Excel的相关问题 博客分类： ASP.NET excelaspc#gridview