如何从gridview导出excel？ [英] How to export excel from gridview?
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问题描述
嗨.....我在嵌套gridview中有一个数据，比如点击'+'它会扩展...我想从网格中导出excel的方式相同..
如果我点击'+'我想看excel中的详细信息..
可以任何一个帮助...
我尝试过：
Hi.....I have a data in nested gridview like when clicking '+' it will expand...the same way i want to export the excel from grid..
If I'm clicking '+' i want to see details in excel also..
Can any one help for this...
What I have tried:
public override void VerifyRenderingInServerForm(Control control)
{
//required to avoid the run time error "
//Control 'GridView1' of type 'Grid View' must be placed inside a form tag with runat=server."
}
protected void BtnexportExcel(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.ClearContent();
Response.ClearHeaders();
Response.Charset = "";
string FileName = "Report" + DateTime.Now + ".xls";
StringWriter strwritter = new StringWriter();
HtmlTextWriter htmltextwrtter = new HtmlTextWriter(strwritter);
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.ms-excel";
Response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);
GvDetailPrimary.GridLines = GridLines.Both;
GvDetailPrimary.HeaderStyle.Font.Bold = true;
GvDetailPrimary.RenderControl(htmltextwrtter);
Response.Write(strwritter.ToString());
Response.End();
}
推荐答案
使用ASP.Net C＃将Gridview导出到Excel [ [^ ]
OP评论说解决方案1的链接中的示例没有不行。我已经证实这一点。 Excel加载但不会导出网格中的数据。
我不能解决为什么该版本不能正常工作所以这里是另一种选择/>
使用C＃和VB.Net格式化将ASPView导出到ASP.Net中的Excel [ ^ ]
（我已验证此代码有效，但我不得不手动添加OnPageIndexChanging事件 - 不知道为什么）
这是我的完整代码：
OP has commented that the example in the link from Solution 1 doesn't work. I have confirmed this. Excel loads but the data from the grid is not exported.
I can't be bothered to work out why that version is not working so here is an alternative
Export GridView to Excel in ASP.Net with Formatting using C# and VB.Net[^]
(I've verified that this code works, but I had to manually add theOnPageIndexChangingevent - not sure why)
Here is my full code that worked:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication4.Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
</head>
<body>
<form runat="server" id="form1">
<asp:GridView ID="GridView1" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
RowStyle-BackColor="#A1DCF2" AlternatingRowStyle-BackColor="White" AlternatingRowStyle-ForeColor="#000"
runat="server" AutoGenerateColumns="false" AllowPaging="true" OnPageIndexChanging="GridView1_PageIndexChanging">
<Columns>
<asp:BoundField DataField="ContactName" HeaderText="Contact Name" ItemStyle-Width="150px" />
<asp:BoundField DataField="City" HeaderText="City" ItemStyle-Width="100px" />
<asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="100px" />
</Columns>
</asp:GridView>
<br />
<asp:Button ID="btnExport" runat="server" Text="Export To Excel" OnClick = "Button1_Click" />
</form>
</body>
</html>
using System;
using System.IO;
using System.Data;
using System.Drawing;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication4
{
public partial class Default : Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGrid();
}
}
public override void VerifyRenderingInServerForm(Control control)
{
//required to avoid the run time error "
//Control 'GridView1' of type 'Grid View' must be placed inside a form tag with runat=server."
}
private void ExportGridToExcel()
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
using (var sw = new StringWriter())
{
var hw = new HtmlTextWriter(sw);
//To Export all pages
GridView1.AllowPaging = false;
BindGrid();
GridView1.HeaderRow.BackColor = Color.White;
foreach (TableCell cell in GridView1.HeaderRow.Cells)
{
cell.BackColor = GridView1.HeaderStyle.BackColor;
}
foreach (GridViewRow row in GridView1.Rows)
{
row.BackColor = Color.White;
foreach (TableCell cell in row.Cells)
{
cell.BackColor = row.RowIndex % 2 == 0 ? GridView1.AlternatingRowStyle.BackColor : GridView1.RowStyle.BackColor;
cell.CssClass = "textmode";
}
}
GridView1.RenderControl(hw);
//style to format numbers to string
const string style = @"<style> .textmode { } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();
}
}
private void BindGrid()
{
var constr = ConfigurationManager.ConnectionStrings["ConnectToDB"].ConnectionString;
using (var con = new SqlConnection(constr))
{
using (var cmd = new SqlCommand("SELECT CustomerId, ContactName, City, Country FROM Customers"))
{
using (var sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (var dt = new DataTable())
{
sda.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
ExportGridToExcel();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
BindGrid();
}
}
}
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