VS2005中 GridView導(dǎo)入Excel的導(dǎo)入需要注意的幾點(diǎn)
最近遇到GridView導(dǎo)入Excel問(wèn)題，總結(jié)出幾點(diǎn)：
1、如果出現(xiàn)下面的錯(cuò)誤提示可用重載VerifyRenderingInServerForm方法解決。
錯(cuò)誤提示:
類(lèi)型“GridView”的控件“GridView1”必須放在具有 runat=server 的窗體標(biāo)記內(nèi)
在后臺(tái)文件中重載VerifyRenderingInServerForm方法,如:
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
2、如果設(shè)置為 GetEncoding("GB2312"),導(dǎo)出的文件將會(huì)出現(xiàn)亂碼。
可用Response.ContentEncoding = System.Text.Encoding.UTF7;
或者Encoding.UTF8等來(lái)解決，不過(guò)導(dǎo)入格式和字體上個(gè)人感覺(jué)UTF7比UTF8效果好些；
因人而異了：）
相關(guān)代碼如下：
Web.config配置： <?xml version="1.0"?>
<configuration>
<appSettings>
<!--數(shù)據(jù)庫(kù)連接串-->
<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>
<compilation debug="true"/>
<authentication mode="Windows"/>
</system.web>
</configuration>
ASPX頁(yè)面代碼：
<%@ 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>無(wú)標(biāo)題頁(yè)</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="true" >
</asp:GridView>
</div>
<asp:Button ID="Button1" runat="server" Text="導(dǎo)出到Excel" />
</form>
</body>
</html>
實(shí)例代碼：
/**//*
* //
*/
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>
/// 鏈接字符串
/// </summary>
public string ConnectString
{
get
{
return ConfigurationManager.AppSettings["ConnectionString"];
}
}
/**//// <summary>
/// 重載VerifyRenderingInServerForm方法
/// 確認(rèn)在運(yùn)行時(shí)為指定的 ASP.NET 服務(wù)器控件呈現(xiàn) HtmlForm 控件。
/// </summary>
/// <param name="control">ASP.NET 服務(wù)器控件，它必須位于 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>
/// 綁定數(shù)據(jù)
/// </summary>
public void BindData()
{
// 查詢(xún)
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>
/// 內(nèi)存分頁(yè)
/// </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] 經(jīng)測(cè)試如果設(shè)置為 GetEncoding("GB2312"),導(dǎo)出的文件將會(huì)出現(xiàn)亂碼。
Response.ContentEncoding = System.Text.Encoding.UTF7;
//設(shè)置輸出文件類(lèi)型為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();
}
}
