VS2005中 GridView导入Excel的导入需要注意的几点
最近带的项目遇到GridView导入Excel问题,总结出几点:
1、如果出现下面的错误提示可用重载VerifyRenderingInServerForm方法解决。
实例代码:
最近带的项目遇到GridView导入Excel问题,总结出几点:
1、如果出现下面的错误提示可用重载VerifyRenderingInServerForm方法解决。
错误提示:
类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内
在后台文件中重载VerifyRenderingInServerForm方法,如:
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
2、如果设置为 GetEncoding("GB2312"),导出的文件将会出现乱码。
可用Response.ContentEncoding = System.Text.Encoding.UTF7;
或者Encoding.UTF8等来解决,不过导入格式和字体上个人感觉UTF7比UTF8效果好些;
因人而异了:)
源码下载地址:http://bbs.52happy.net/read.php?tid=219811
相关代码如下:
Web.config配置:
类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内
在后台文件中重载VerifyRenderingInServerForm方法,如:
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
2、如果设置为 GetEncoding("GB2312"),导出的文件将会出现乱码。
可用Response.ContentEncoding = System.Text.Encoding.UTF7;
或者Encoding.UTF8等来解决,不过导入格式和字体上个人感觉UTF7比UTF8效果好些;
因人而异了:)
源码下载地址:http://bbs.52happy.net/read.php?tid=219811
相关代码如下:
Web.config配置:
<?
xml version="1.0"
?>
<!--
注意: 除了手动编辑此文件以外,您还可以使用
Web 管理工具来配置应用程序的设置。可以使用 Visual Studio 中的
“网站”->“Asp.Net 配置”选项。
设置和注释的完整列表在
machine.config.comments 中,该文件通常位于
\Windows\Microsoft.Net\Framework\v2.x\Config 中
-->
< configuration >
< appSettings >
<!-- 数据库连接串 -->
< add key ="ConnectionString" value ="data source=.;initial catalog=Northwind;user id=sa;password=sa;persist security info=true;packet size=4096" />
</ appSettings >
< connectionStrings />
< system .web >
<!--
设置 compilation debug="true" 将调试符号插入
已编译的页面中。但由于这会
影响性能,因此只在开发过程中将此值
设置为 true。
-->
< compilation debug ="true" />
<!--
通过 <authentication> 节可以配置 ASP.NET 使用的
安全身份验证模式,
以标识传入的用户。
-->
< authentication mode ="Windows" />
<!--
如果在执行请求的过程中出现未处理的错误,
则通过 <customErrors> 节可以配置相应的处理步骤。具体说来,
开发人员通过该节可以配置
要显示的 html 错误页
以代替错误堆栈跟踪。
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
</ system.web >
</ configuration >
<!--
注意: 除了手动编辑此文件以外,您还可以使用
Web 管理工具来配置应用程序的设置。可以使用 Visual Studio 中的
“网站”->“Asp.Net 配置”选项。
设置和注释的完整列表在
machine.config.comments 中,该文件通常位于
\Windows\Microsoft.Net\Framework\v2.x\Config 中
-->
< configuration >
< appSettings >
<!-- 数据库连接串 -->
< add key ="ConnectionString" value ="data source=.;initial catalog=Northwind;user id=sa;password=sa;persist security info=true;packet size=4096" />
</ appSettings >
< connectionStrings />
< system .web >
<!--
设置 compilation debug="true" 将调试符号插入
已编译的页面中。但由于这会
影响性能,因此只在开发过程中将此值
设置为 true。
-->
< compilation debug ="true" />
<!--
通过 <authentication> 节可以配置 ASP.NET 使用的
安全身份验证模式,
以标识传入的用户。
-->
< authentication mode ="Windows" />
<!--
如果在执行请求的过程中出现未处理的错误,
则通过 <customErrors> 节可以配置相应的处理步骤。具体说来,
开发人员通过该节可以配置
要显示的 html 错误页
以代替错误堆栈跟踪。
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
</ system.web >
</ configuration >
ASPX页面代码:
<
%@ Page
Language
="C#"
AutoEventWireup
="true"
CodeFile
="Default.aspx.cs"
Inherits
="_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 > 无标题页 </ title >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< asp:GridView ID ="GridView1" runat ="server" AllowPaging ="true" OnPageIndexChanging ="Paging" >
</ asp:GridView >
</ div >
< asp:Button ID ="Button1" runat ="server" OnClick ="Button1_Click" Text ="导出到Excel" />
</ form >
</ body >
</ html >
<! 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 >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< asp:GridView ID ="GridView1" runat ="server" AllowPaging ="true" OnPageIndexChanging ="Paging" >
</ asp:GridView >
</ div >
< asp:Button ID ="Button1" runat ="server" OnClick ="Button1_Click" Text ="导出到Excel" />
</ form >
</ body >
</ html >
实例代码:
/*
* // by XiaoYin [10/22/2006]
*/
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Xml;
public partial class _Default : System.Web.UI.Page
{
/// <summary>
/// 链接字符串
/// </summary>
public string ConnectString
{
get
{
return ConfigurationManager.AppSettings["ConnectionString"];
}
}
/// <summary>
/// 重载VerifyRenderingInServerForm方法
/// 确认在运行时为指定的 ASP.NET 服务器控件呈现 HtmlForm 控件。
/// </summary>
/// <param name="control">ASP.NET 服务器控件,它必须位于 HtmlForm 控件中</param>
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindData();
}
}
/// <summary>
/// 绑定数据
/// </summary>
public void BindData()
{
// 查询
string query = "SELECT * FROM Categories";
SqlConnection myConnection = new SqlConnection(ConnectString);
SqlDataAdapter ad = new SqlDataAdapter(query, myConnection);
DataSet ds = new DataSet();
ad.Fill(ds, "Categories");
GridView1.DataSource = ds;
GridView1.DataBind();
}
/// <summary>
/// 内存分页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Paging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
BindData();
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
//gaoyang [10/21/2006] 经测试如果设置为 GetEncoding("GB2312"),导出的文件将会出现乱码。
Response.ContentEncoding = System.Text.Encoding.UTF7;
//设置输出文件类型为excel文件。
Response.ContentType = "application/ms-excel";
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView1.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
}
}
* // by XiaoYin [10/22/2006]
*/
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Xml;
public partial class _Default : System.Web.UI.Page
{
/// <summary>
/// 链接字符串
/// </summary>
public string ConnectString
{
get
{
return ConfigurationManager.AppSettings["ConnectionString"];
}
}
/// <summary>
/// 重载VerifyRenderingInServerForm方法
/// 确认在运行时为指定的 ASP.NET 服务器控件呈现 HtmlForm 控件。
/// </summary>
/// <param name="control">ASP.NET 服务器控件,它必须位于 HtmlForm 控件中</param>
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindData();
}
}
/// <summary>
/// 绑定数据
/// </summary>
public void BindData()
{
// 查询
string query = "SELECT * FROM Categories";
SqlConnection myConnection = new SqlConnection(ConnectString);
SqlDataAdapter ad = new SqlDataAdapter(query, myConnection);
DataSet ds = new DataSet();
ad.Fill(ds, "Categories");
GridView1.DataSource = ds;
GridView1.DataBind();
}
/// <summary>
/// 内存分页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Paging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
BindData();
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
//gaoyang [10/21/2006] 经测试如果设置为 GetEncoding("GB2312"),导出的文件将会出现乱码。
Response.ContentEncoding = System.Text.Encoding.UTF7;
//设置输出文件类型为excel文件。
Response.ContentType = "application/ms-excel";
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView1.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
}
}