解决Girdviewd导出Excel的相关问题
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。。。。
<%@ 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。。。。